Example usage for android.view VelocityTracker obtain

Introduction

In this page you can find the example usage for android.view VelocityTracker obtain.

Prototype

static public VelocityTracker obtain() 

Source Link

Document

Retrieve a new VelocityTracker object to watch the velocity of a motion.

Usage

From source file:com.pc.ui.fortysevendeg.swipelistview.SwipeListViewTouchListener.java

/**
 * @see View.OnTouchListener#onTouch(android.view.View,
 *      android.view.MotionEvent)/*w  w w .  ja va 2s .  c  o m*/
 */
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
    if (!isSwipeEnabled()) {
        return false;
    }

    if (viewWidth < 2) {
        viewWidth = swipeListView.getWidth();
    }

    switch (MotionEventCompat.getActionMasked(motionEvent)) {
    case MotionEvent.ACTION_DOWN: {
        if (paused && downPosition != ListView.INVALID_POSITION) {
            return false;
        }

        if (swipeOpenSingle && hasOpened()) {
            closeOpenedItems();
            return false;
        }

        swipeCurrentAction = SwipeListView.SWIPE_ACTION_NONE;

        int childCount = swipeListView.getChildCount();
        int[] listViewCoords = new int[2];
        swipeListView.getLocationOnScreen(listViewCoords);
        int x = (int) motionEvent.getRawX() - listViewCoords[0];
        int y = (int) motionEvent.getRawY() - listViewCoords[1];
        View child;
        for (int i = 0; i < childCount; i++) {
            child = swipeListView.getChildAt(i);
            child.getHitRect(rect);

            int childPosition = swipeListView.getPositionForView(child);

            // dont allow swiping if this is on the header or footer or
            // IGNORE_ITEM_VIEW_TYPE or enabled is false on the adapter
            boolean allowSwipe = swipeListView.getAdapter().isEnabled(childPosition)
                    && swipeListView.getAdapter().getItemViewType(childPosition) >= 0;

            if (allowSwipe && rect.contains(x, y)) {
                setParentView(child);
                setFrontView(child.findViewById(swipeFrontView));

                downX = motionEvent.getRawX();
                downPosition = childPosition;

                frontView.setClickable(!opened.get(downPosition));
                frontView.setLongClickable(!opened.get(downPosition));

                velocityTracker = VelocityTracker.obtain();
                velocityTracker.addMovement(motionEvent);
                if (swipeBackView > 0) {
                    setBackView(child.findViewById(swipeBackView));
                }
                break;
            }
        }
        view.onTouchEvent(motionEvent);
        return true;
    }

    case MotionEvent.ACTION_UP: {
        if (velocityTracker == null || !swiping || downPosition == ListView.INVALID_POSITION) {
            break;
        }

        float deltaX = motionEvent.getRawX() - downX;
        velocityTracker.addMovement(motionEvent);
        velocityTracker.computeCurrentVelocity(1000);
        float velocityX = Math.abs(velocityTracker.getXVelocity());
        if (!opened.get(downPosition)) {
            if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && velocityTracker.getXVelocity() > 0) {
                velocityX = 0;
            }
            if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && velocityTracker.getXVelocity() < 0) {
                velocityX = 0;
            }
        }
        float velocityY = Math.abs(velocityTracker.getYVelocity());
        boolean swap = false;
        boolean swapRight = false;
        if (minFlingVelocity <= velocityX && velocityX <= maxFlingVelocity && velocityY * 2 < velocityX) {
            swapRight = velocityTracker.getXVelocity() > 0;
            Log.d("SwipeListView", "swapRight: " + swapRight + " - swipingRight: " + swipingRight);
            if (swapRight != swipingRight && swipeActionLeft != swipeActionRight) {
                swap = false;
            } else if (opened.get(downPosition) && openedRight.get(downPosition) && swapRight) {
                swap = false;
            } else if (opened.get(downPosition) && !openedRight.get(downPosition) && !swapRight) {
                swap = false;
            } else {
                swap = true;
            }
        }
        // else if (Math.abs(deltaX) > viewWidth / 2) {
        // swap = true;
        // swapRight = deltaX > 0;
        // }

        else {
            swapRight = deltaX > 0;
            if (swapRight) {
                if (Math.abs(deltaX) >= (viewWidth - rightOffset) / 2) {
                    swap = true;
                }
            } else {
                if (Math.abs(deltaX) >= (viewWidth - leftOffset) / 2) {
                    swap = true;
                }
            }

        }
        generateAnimate(frontView, swap, swapRight, downPosition);
        if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
            swapChoiceState(downPosition);
        }

        velocityTracker.recycle();
        velocityTracker = null;
        downX = 0;
        // change clickable front view
        // if (swap) {
        // frontView.setClickable(opened.get(downPosition));
        // frontView.setLongClickable(opened.get(downPosition));
        // }
        swiping = false;
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        if (velocityTracker == null || paused || downPosition == ListView.INVALID_POSITION) {
            break;
        }

        velocityTracker.addMovement(motionEvent);
        velocityTracker.computeCurrentVelocity(1000);
        float velocityX = Math.abs(velocityTracker.getXVelocity());
        float velocityY = Math.abs(velocityTracker.getYVelocity());

        float deltaX = motionEvent.getRawX() - downX;
        float deltaMode = Math.abs(deltaX);

        int swipeMode = this.swipeMode;
        int changeSwipeMode = swipeListView.changeSwipeMode(downPosition);
        if (changeSwipeMode >= 0) {
            swipeMode = changeSwipeMode;
        }

        if (swipeMode == SwipeListView.SWIPE_MODE_NONE) {
            deltaMode = 0;
        } else if (swipeMode != SwipeListView.SWIPE_MODE_BOTH) {
            if (opened.get(downPosition)) {
                if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && deltaX < 0) {
                    deltaMode = 0;
                } else if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && deltaX > 0) {
                    deltaMode = 0;
                }
            } else {
                if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && deltaX > 0) {
                    deltaMode = 0;
                } else if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && deltaX < 0) {
                    deltaMode = 0;
                }
            }
        }
        if (deltaMode > slop && swipeCurrentAction == SwipeListView.SWIPE_ACTION_NONE
                && velocityY < velocityX) {
            swiping = true;
            swipingRight = (deltaX > 0);
            Log.d("SwipeListView", "deltaX: " + deltaX + " - swipingRight: " + swipingRight);
            if (opened.get(downPosition)) {
                swipeListView.onStartClose(downPosition, swipingRight);
                swipeCurrentAction = SwipeListView.SWIPE_ACTION_REVEAL;
            } else {
                if (swipingRight && swipeActionRight == SwipeListView.SWIPE_ACTION_DISMISS) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_DISMISS;
                } else if (!swipingRight && swipeActionLeft == SwipeListView.SWIPE_ACTION_DISMISS) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_DISMISS;
                } else if (swipingRight && swipeActionRight == SwipeListView.SWIPE_ACTION_CHOICE) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_CHOICE;
                } else if (!swipingRight && swipeActionLeft == SwipeListView.SWIPE_ACTION_CHOICE) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_CHOICE;
                } else {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_REVEAL;
                }
                swipeListView.onStartOpen(downPosition, swipeCurrentAction, swipingRight);
            }
            swipeListView.requestDisallowInterceptTouchEvent(true);
            MotionEvent cancelEvent = MotionEvent.obtain(motionEvent);
            cancelEvent.setAction(MotionEvent.ACTION_CANCEL | (MotionEventCompat
                    .getActionIndex(motionEvent) << MotionEventCompat.ACTION_POINTER_INDEX_SHIFT));
            swipeListView.onTouchEvent(cancelEvent);
            if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
                backView.setVisibility(View.GONE);
            }
        }

        if (swiping && downPosition != ListView.INVALID_POSITION) {
            if (opened.get(downPosition)) {
                deltaX += openedRight.get(downPosition) ? viewWidth - rightOffset : -viewWidth + leftOffset;
            }
            move(deltaX);
            return true;
        }
        break;
    }
    }
    return false;
}

---

From source file:com.daniel.view.swipelistview.SwipeListViewTouchListener.java

/**
 * @see android.view.View.OnTouchListener#onTouch(android.view.View, android.view.MotionEvent)
 *//*w ww  .j a  v  a2s  .  c o m*/
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
    if (!isSwipeEnabled()) {
        return false;
    }

    if (viewWidth < 2) {
        viewWidth = swipeListView.getWidth();
    }

    switch (MotionEventCompat.getActionMasked(motionEvent)) {
    case MotionEvent.ACTION_DOWN: {
        if (paused && downPosition != ListView.INVALID_POSITION) {
            return false;
        }
        swipeCurrentAction = SwipeListView.SWIPE_ACTION_NONE;

        int childCount = swipeListView.getChildCount();
        int[] listViewCoords = new int[2];
        swipeListView.getLocationOnScreen(listViewCoords);
        int x = (int) motionEvent.getRawX() - listViewCoords[0];
        int y = (int) motionEvent.getRawY() - listViewCoords[1];
        View child;
        for (int i = 0; i < childCount; i++) {
            child = swipeListView.getChildAt(i);
            child.getHitRect(rect);

            int childPosition = swipeListView.getPositionForView(child);

            // dont allow swiping if this is on the header or footer or IGNORE_ITEM_VIEW_TYPE or enabled is false on the adapter
            boolean allowSwipe = swipeListView.getAdapter().isEnabled(childPosition)
                    && swipeListView.getAdapter().getItemViewType(childPosition) >= 0;

            if (allowSwipe && rect.contains(x, y)) {
                setParentView(child);
                setFrontView(child.findViewById(swipeFrontView));

                downX = motionEvent.getRawX();
                downPosition = childPosition;

                frontView.setClickable(!opened.get(downPosition));
                frontView.setLongClickable(!opened.get(downPosition));

                velocityTracker = VelocityTracker.obtain();
                velocityTracker.addMovement(motionEvent);
                if (swipeBackView > 0) {
                    setBackView(child.findViewById(swipeBackView));
                }
                break;
            }
        }
        view.onTouchEvent(motionEvent);
        return true;
    }

    case MotionEvent.ACTION_UP: {
        if (velocityTracker == null || !swiping || downPosition == ListView.INVALID_POSITION) {
            break;
        }

        float deltaX = motionEvent.getRawX() - downX;
        velocityTracker.addMovement(motionEvent);
        velocityTracker.computeCurrentVelocity(1000);
        float velocityX = Math.abs(velocityTracker.getXVelocity());
        if (!opened.get(downPosition)) {
            if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && velocityTracker.getXVelocity() > 0) {
                velocityX = 0;
            }
            if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && velocityTracker.getXVelocity() < 0) {
                velocityX = 0;
            }
        }
        float velocityY = Math.abs(velocityTracker.getYVelocity());
        boolean swap = false;
        boolean swapRight = false;
        if (minFlingVelocity <= velocityX && velocityX <= maxFlingVelocity && velocityY * 2 < velocityX) {
            swapRight = velocityTracker.getXVelocity() > 0;
            Log.d("SwipeListView", "swapRight: " + swapRight + " - swipingRight: " + swipingRight);
            if (swapRight != swipingRight && swipeActionLeft != swipeActionRight) {
                swap = false;
            } else if (opened.get(downPosition) && openedRight.get(downPosition) && swapRight) {
                swap = false;
            } else if (opened.get(downPosition) && !openedRight.get(downPosition) && !swapRight) {
                swap = false;
            } else {
                swap = true;
            }
        } else if (Math.abs(deltaX) > viewWidth / 2) {
            swap = true;
            swapRight = deltaX > 0;
        }
        generateAnimate(frontView, swap, swapRight, downPosition);
        if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
            swapChoiceState(downPosition);
        }

        velocityTracker.recycle();
        velocityTracker = null;
        downX = 0;
        // change clickable front view
        //                if (swap) {
        //                    frontView.setClickable(opened.get(downPosition));
        //                    frontView.setLongClickable(opened.get(downPosition));
        //                }
        swiping = false;
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        if (velocityTracker == null || paused || downPosition == ListView.INVALID_POSITION) {
            break;
        }
        if (disablePos != null && disablePos.contains(downPosition)) {
            return false;
        }
        velocityTracker.addMovement(motionEvent);
        velocityTracker.computeCurrentVelocity(1000);
        float velocityX = Math.abs(velocityTracker.getXVelocity());
        float velocityY = Math.abs(velocityTracker.getYVelocity());

        float deltaX = motionEvent.getRawX() - downX;
        float deltaMode = Math.abs(deltaX);

        int swipeMode = this.swipeMode;
        int changeSwipeMode = swipeListView.changeSwipeMode(downPosition);
        if (changeSwipeMode >= 0) {
            swipeMode = changeSwipeMode;
        }

        if (swipeMode == SwipeListView.SWIPE_MODE_NONE) {
            deltaMode = 0;
        } else if (swipeMode != SwipeListView.SWIPE_MODE_BOTH) {
            if (opened.get(downPosition)) {
                if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && deltaX < 0) {
                    deltaMode = 0;
                } else if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && deltaX > 0) {
                    deltaMode = 0;
                }
            } else {
                if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && deltaX > 0) {
                    deltaMode = 0;
                } else if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && deltaX < 0) {
                    deltaMode = 0;
                }
            }
        }
        if (deltaMode > slop && swipeCurrentAction == SwipeListView.SWIPE_ACTION_NONE
                && velocityY < velocityX) {
            swiping = true;
            swipingRight = (deltaX > 0);
            Log.d("SwipeListView", "deltaX: " + deltaX + " - swipingRight: " + swipingRight);
            if (opened.get(downPosition)) {
                swipeListView.onStartClose(downPosition, swipingRight);
                swipeCurrentAction = SwipeListView.SWIPE_ACTION_REVEAL;
            } else {
                if (swipingRight && swipeActionRight == SwipeListView.SWIPE_ACTION_DISMISS) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_DISMISS;
                } else if (!swipingRight && swipeActionLeft == SwipeListView.SWIPE_ACTION_DISMISS) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_DISMISS;
                } else if (swipingRight && swipeActionRight == SwipeListView.SWIPE_ACTION_CHOICE) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_CHOICE;
                } else if (!swipingRight && swipeActionLeft == SwipeListView.SWIPE_ACTION_CHOICE) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_CHOICE;
                } else {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_REVEAL;
                }
                swipeListView.onStartOpen(downPosition, swipeCurrentAction, swipingRight);
            }
            swipeListView.requestDisallowInterceptTouchEvent(true);
            MotionEvent cancelEvent = MotionEvent.obtain(motionEvent);
            cancelEvent.setAction(MotionEvent.ACTION_CANCEL | (MotionEventCompat
                    .getActionIndex(motionEvent) << MotionEventCompat.ACTION_POINTER_INDEX_SHIFT));
            swipeListView.onTouchEvent(cancelEvent);
            if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
                backView.setVisibility(View.GONE);
            }
        }

        if (swiping && downPosition != ListView.INVALID_POSITION) {
            if (opened.get(downPosition)) {
                deltaX += openedRight.get(downPosition) ? viewWidth - rightOffset : -viewWidth + leftOffset;
            }
            move(deltaX);
            return true;
        }
        break;
    }
    }
    return false;
}

---

From source file:com.fortysevendeg.android.swipelistview.SwipeListViewTouchListener.java

protected boolean actionDown(View view, MotionEvent motionEvent) {
    if (mPaused) {
        return false;
    }/*from  w w w.  ja va 2  s  . com*/
    mSwipeCurrentAction = SwipeListView.SWIPE_ACTION_NONE;

    int childCount = mSwipeListView.getChildCount();
    int[] listViewCoords = new int[2];
    mSwipeListView.getLocationOnScreen(listViewCoords);
    int x = (int) motionEvent.getRawX() - listViewCoords[0];
    int y = (int) motionEvent.getRawY() - listViewCoords[1];
    View child;
    for (int i = 0; i < childCount; i++) {
        child = mSwipeListView.getChildAt(i);
        child.getHitRect(mRect);

        int childPosition = mSwipeListView.getPositionForView(child);

        // dont allow swiping if this is on the header or footer or IGNORE_ITEM_VIEW_TYPE or enabled is false on the adapter
        boolean allowSwipe = mSwipeListView.getAdapter().isEnabled(childPosition)
                && mSwipeListView.getAdapter().getItemViewType(childPosition) >= 0;

        if (allowSwipe && mRect.contains(x, y)) {
            setParentView(child);
            setFrontView(child.findViewById(mSwipeFrontView));

            mDownX = motionEvent.getRawX();
            mDownPosition = childPosition;

            mFrontView.setClickable(!mOpened.get(mDownPosition));
            mFrontView.setLongClickable(!mOpened.get(mDownPosition));

            mVelocityTracker = VelocityTracker.obtain();
            mVelocityTracker.addMovement(motionEvent);
            if (mSwipeBackView > 0) {
                setBackView(child.findViewById(mSwipeBackView));
            }
            break;
        }
    }
    view.onTouchEvent(motionEvent);
    return true;
}

---

From source file:com.aoeng.degu.views.swipe.SwipeListSingleViewTouchListener.java

/**
 * @see View.OnTouchListener#onTouch(android.view.View, android.view.MotionEvent)
 *///  w w w .j a v  a  2s  .c o m
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
    if (!isSwipeEnabled()) {
        return false;
    }

    if (viewWidth < 2) {
        viewWidth = swipeListView.getWidth();
    }

    switch (MotionEventCompat.getActionMasked(motionEvent)) {
    case MotionEvent.ACTION_DOWN: {
        if (paused && downPosition != ListView.INVALID_POSITION) {
            return false;
        }
        swipeCurrentAction = SwipeListView.SWIPE_ACTION_NONE;

        int childCount = swipeListView.getChildCount();
        int[] listViewCoords = new int[2];
        swipeListView.getLocationOnScreen(listViewCoords);
        int x = (int) motionEvent.getRawX() - listViewCoords[0];
        int y = (int) motionEvent.getRawY() - listViewCoords[1];
        View child;
        for (int i = 0; i < childCount; i++) {
            child = swipeListView.getChildAt(i);
            child.getHitRect(rect);

            int childPosition = swipeListView.getPositionForView(child);

            // dont allow swiping if this is on the header or footer or IGNORE_ITEM_VIEW_TYPE or enabled is false on the adapter
            boolean allowSwipe = swipeListView.getAdapter().isEnabled(childPosition)
                    && swipeListView.getAdapter().getItemViewType(childPosition) >= 0;

            if (allowSwipe && rect.contains(x, y)) {
                setParentView(child);
                setFrontView(child.findViewById(swipeFrontView));

                downX = motionEvent.getRawX();
                downPosition = childPosition;

                frontView.setClickable(!opened.get(downPosition));
                frontView.setLongClickable(!opened.get(downPosition));

                velocityTracker = VelocityTracker.obtain();
                velocityTracker.addMovement(motionEvent);
                if (swipeBackView > 0) {
                    setBackView(child.findViewById(swipeBackView));
                }
                break;
            }
        }
        view.onTouchEvent(motionEvent);
        return true;
    }

    case MotionEvent.ACTION_UP: {
        if (velocityTracker == null || !swiping || downPosition == ListView.INVALID_POSITION) {
            break;
        }

        float deltaX = motionEvent.getRawX() - downX;
        velocityTracker.addMovement(motionEvent);
        velocityTracker.computeCurrentVelocity(1000);
        float velocityX = Math.abs(velocityTracker.getXVelocity());
        if (!opened.get(downPosition)) {
            if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && velocityTracker.getXVelocity() > 0) {
                velocityX = 0;
            }
            if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && velocityTracker.getXVelocity() < 0) {
                velocityX = 0;
            }
        }
        float velocityY = Math.abs(velocityTracker.getYVelocity());
        boolean swap = false;
        boolean swapRight = false;
        if (minFlingVelocity <= velocityX && velocityX <= maxFlingVelocity && velocityY * 2 < velocityX) {
            swapRight = velocityTracker.getXVelocity() > 0;
            Log.d("SwipeListView", "swapRight: " + swapRight + " - swipingRight: " + swipingRight);
            if (swapRight != swipingRight && swipeActionLeft != swipeActionRight) {
                swap = false;
            } else if (opened.get(downPosition) && openedRight.get(downPosition) && swapRight) {
                swap = false;
            } else if (opened.get(downPosition) && !openedRight.get(downPosition) && !swapRight) {
                swap = false;
            } else {
                swap = true;
            }
        } else if (Math.abs(deltaX) > viewWidth / 2) {
            swap = true;
            swapRight = deltaX > 0;
        }
        generateAnimate(frontView, swap, swapRight, downPosition);
        if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
            swapChoiceState(downPosition);
        }

        velocityTracker.recycle();
        velocityTracker = null;
        downX = 0;
        // change clickable front view
        // if (swap) {
        // frontView.setClickable(opened.get(downPosition));
        // frontView.setLongClickable(opened.get(downPosition));
        // }
        swiping = false;
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        if (velocityTracker == null || paused || downPosition == ListView.INVALID_POSITION) {
            break;
        }

        velocityTracker.addMovement(motionEvent);
        velocityTracker.computeCurrentVelocity(1000);
        float velocityX = Math.abs(velocityTracker.getXVelocity());
        float velocityY = Math.abs(velocityTracker.getYVelocity());

        float deltaX = motionEvent.getRawX() - downX;
        float deltaMode = Math.abs(deltaX);

        int swipeMode = this.swipeMode;
        int changeSwipeMode = swipeListView.changeSwipeMode(downPosition);
        if (changeSwipeMode >= 0) {
            swipeMode = changeSwipeMode;
        }

        if (swipeMode == SwipeListView.SWIPE_MODE_NONE) {
            deltaMode = 0;
        } else if (swipeMode != SwipeListView.SWIPE_MODE_BOTH) {
            if (opened.get(downPosition)) {
                if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && deltaX < 0) {
                    deltaMode = 0;
                } else if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && deltaX > 0) {
                    deltaMode = 0;
                }
            } else {
                if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && deltaX > 0) {
                    deltaMode = 0;
                } else if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && deltaX < 0) {
                    deltaMode = 0;
                }
            }
        }
        if (deltaMode > slop && swipeCurrentAction == SwipeListView.SWIPE_ACTION_NONE
                && velocityY < velocityX) {
            swiping = true;
            swipingRight = (deltaX > 0);
            Log.d("SwipeListView", "deltaX: " + deltaX + " - swipingRight: " + swipingRight);
            if (opened.get(downPosition)) {
                swipeListView.onStartClose(downPosition, swipingRight);
                swipeCurrentAction = SwipeListView.SWIPE_ACTION_REVEAL;
            } else {
                if (swipingRight && swipeActionRight == SwipeListView.SWIPE_ACTION_DISMISS) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_DISMISS;
                } else if (!swipingRight && swipeActionLeft == SwipeListView.SWIPE_ACTION_DISMISS) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_DISMISS;
                } else if (swipingRight && swipeActionRight == SwipeListView.SWIPE_ACTION_CHOICE) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_CHOICE;
                } else if (!swipingRight && swipeActionLeft == SwipeListView.SWIPE_ACTION_CHOICE) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_CHOICE;
                } else {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_REVEAL;
                }
                swipeListView.onStartOpen(downPosition, swipeCurrentAction, swipingRight);
            }
            swipeListView.requestDisallowInterceptTouchEvent(true);
            MotionEvent cancelEvent = MotionEvent.obtain(motionEvent);
            cancelEvent.setAction(MotionEvent.ACTION_CANCEL | (MotionEventCompat
                    .getActionIndex(motionEvent) << MotionEventCompat.ACTION_POINTER_INDEX_SHIFT));
            swipeListView.onTouchEvent(cancelEvent);
            if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
                backView.setVisibility(View.GONE);
            }
        }

        if (swiping && downPosition != ListView.INVALID_POSITION) {
            if (opened.get(downPosition)) {
                deltaX += openedRight.get(downPosition) ? viewWidth - rightOffset : -viewWidth + leftOffset;
            }
            move(deltaX);
            return true;
        }
        break;
    }
    }
    return false;
}

---

From source file:com.comcast.freeflow.core.FreeFlowContainer.java

@Override
public boolean onTouchEvent(MotionEvent event) {

    super.onTouchEvent(event);
    if (layout == null)
        return false;

    boolean canScroll = false;

    if (layout.horizontalScrollEnabled() && this.layout.getContentWidth() > getWidth()) {
        canScroll = true;/*from   w w  w.  j  a va  2s. c o m*/
    }
    if (layout.verticalScrollEnabled() && layout.getContentHeight() > getHeight()) {
        canScroll = true;
    }

    if (mVelocityTracker == null && canScroll) {
        mVelocityTracker = VelocityTracker.obtain();
    }
    if (mVelocityTracker != null) {
        mVelocityTracker.addMovement(event);
    }

    if (event.getAction() == MotionEvent.ACTION_DOWN) {

        if (mTouchMode == TOUCH_MODE_FLING) {
            // Wait for some time to see if the user is just trying
            // to speed up the scroll
            postDelayed(new Runnable() {
                @Override
                public void run() {
                    if (mTouchMode == TOUCH_MODE_DOWN) {
                        if (mTouchMode == TOUCH_MODE_DOWN) {
                            scroller.forceFinished(true);
                        }
                    }
                }
            }, FLYWHEEL_TIMEOUT);
        }

        beginTouchAt = ViewUtils.getItemAt(frames, (int) (viewPortX + event.getX()),
                (int) (viewPortY + event.getY()));

        if (canScroll) {
            deltaX = event.getX();
            deltaY = event.getY();
        }
        mTouchMode = TOUCH_MODE_DOWN;

        if (mPendingCheckForTap != null) {
            removeCallbacks(mPendingCheckForTap);
            mPendingCheckForLongPress = null;
        }

        if (beginTouchAt != null) {
            mPendingCheckForTap = new CheckForTap();
        }
        postDelayed(mPendingCheckForTap, ViewConfiguration.getTapTimeout());

        return true;

    } else if (event.getAction() == MotionEvent.ACTION_MOVE) {

        if (canScroll) {
            float xDiff = event.getX() - deltaX;
            float yDiff = event.getY() - deltaY;

            double distance = Math.sqrt(xDiff * xDiff + yDiff * yDiff);
            if ((mTouchMode == TOUCH_MODE_DOWN || mTouchMode == TOUCH_MODE_REST) && distance > touchSlop) {
                mTouchMode = TOUCH_MODE_SCROLL;

                if (mPendingCheckForTap != null) {
                    removeCallbacks(mPendingCheckForTap);
                    mPendingCheckForTap = null;
                }

            }

            if (mTouchMode == TOUCH_MODE_SCROLL) {
                moveViewportBy(event.getX() - deltaX, event.getY() - deltaY, false);
                invokeOnItemScrollListeners();
                deltaX = event.getX();
                deltaY = event.getY();
            }
        }

        return true;

    } else if (event.getAction() == MotionEvent.ACTION_CANCEL) {
        mTouchMode = TOUCH_MODE_REST;

        if (canScroll) {
            mVelocityTracker.recycle();
            mVelocityTracker = null;
        }

        // requestLayout();

        return true;

    } else if (event.getAction() == MotionEvent.ACTION_UP) {

        if (mTouchMode == TOUCH_MODE_SCROLL) {
            mVelocityTracker.computeCurrentVelocity(1000, maxFlingVelocity);
            if (Math.abs(mVelocityTracker.getXVelocity()) > minFlingVelocity
                    || Math.abs(mVelocityTracker.getYVelocity()) > minFlingVelocity) {

                int maxX = layout.getContentWidth() - getWidth();
                int maxY = layout.getContentHeight() - getHeight();

                scroller.fling(viewPortX, viewPortY, -(int) mVelocityTracker.getXVelocity(),
                        -(int) mVelocityTracker.getYVelocity(), 0, maxX, 0, maxY, overflingDistance,
                        overflingDistance);

                mTouchMode = TOUCH_MODE_FLING;
                post(flingRunnable);

            } else {
                mTouchMode = TOUCH_MODE_REST;
            }

        } else if (mTouchMode == TOUCH_MODE_DOWN || mTouchMode == TOUCH_MODE_DONE_WAITING) {
            if (mTouchModeReset != null) {
                removeCallbacks(mTouchModeReset);
            }
            if (beginTouchAt != null && beginTouchAt.view != null) {
                beginTouchAt.view.setPressed(true);

                mTouchModeReset = new Runnable() {
                    @Override
                    public void run() {
                        mTouchModeReset = null;
                        mTouchMode = TOUCH_MODE_REST;
                        if (beginTouchAt != null && beginTouchAt.view != null) {
                            beginTouchAt.view.setPressed(false);
                        }
                        if (mChoiceActionMode == null && mOnItemSelectedListener != null) {
                            mOnItemSelectedListener.onItemSelected(FreeFlowContainer.this,
                                    selectedFreeFlowItem);
                        }

                        // setPressed(false);
                        // if (!mDataChanged) {
                        mPerformClick = new PerformClick();
                        mPerformClick.run();
                        // }
                    }
                };
                selectedFreeFlowItem = beginTouchAt;
                postDelayed(mTouchModeReset, ViewConfiguration.getPressedStateDuration());

                mTouchMode = TOUCH_MODE_TAP;
            } else {
                mTouchMode = TOUCH_MODE_REST;
            }

        }

        return true;
    }

    return false;

}

---

From source file:com.test.xujixiao.xjx.widget.view.swipe_listview.SwipeListViewTouchListener.java

/**
 * @see View.OnTouchListener#onTouch(View, MotionEvent)
 *//*from   ww w .ja  va2 s  .  co m*/
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
    if (!isSwipeEnabled()) {
        return false;
    }

    if (viewWidth < 2) {
        viewWidth = swipeListView.getWidth();
    }

    switch (motionEvent.getActionMasked()) {
    case MotionEvent.ACTION_DOWN: {
        if (paused && downPosition != ListView.INVALID_POSITION) {
            return false;
        }
        swipeCurrentAction = SwipeListView.SWIPE_ACTION_NONE;

        int childCount = swipeListView.getChildCount();
        int[] listViewCoords = new int[2];
        swipeListView.getLocationOnScreen(listViewCoords);
        int x = (int) motionEvent.getRawX() - listViewCoords[0];
        int y = (int) motionEvent.getRawY() - listViewCoords[1];
        View child;
        for (int i = 0; i < childCount; i++) {
            child = swipeListView.getChildAt(i);
            child.getHitRect(rect);

            int childPosition = swipeListView.getPositionForView(child);

            // dont allow swiping if this is on the header or footer or IGNORE_ITEM_VIEW_TYPE or enabled is false on the adapter
            boolean allowSwipe = swipeListView.getAdapter().isEnabled(childPosition)
                    && swipeListView.getAdapter().getItemViewType(childPosition) >= 0;

            if (allowSwipe && rect.contains(x, y)) {
                setParentView(child);
                setFrontView(child.findViewById(swipeFrontView));

                downX = motionEvent.getRawX();
                downPosition = childPosition;

                frontView.setClickable(!opened.get(downPosition));
                frontView.setLongClickable(!opened.get(downPosition));

                velocityTracker = VelocityTracker.obtain();
                velocityTracker.addMovement(motionEvent);
                if (swipeBackView > 0) {
                    setBackView(child.findViewById(swipeBackView));
                }
                break;
            }
        }
        view.onTouchEvent(motionEvent);
        return true;
    }

    case MotionEvent.ACTION_UP: {
        if (velocityTracker == null || !swiping || downPosition == ListView.INVALID_POSITION) {
            break;
        }

        float deltaX = motionEvent.getRawX() - downX;
        velocityTracker.addMovement(motionEvent);
        velocityTracker.computeCurrentVelocity(1000);
        float velocityX = Math.abs(velocityTracker.getXVelocity());
        if (!opened.get(downPosition)) {
            if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && velocityTracker.getXVelocity() > 0) {
                velocityX = 0;
            }
            if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && velocityTracker.getXVelocity() < 0) {
                velocityX = 0;
            }
        }
        float velocityY = Math.abs(velocityTracker.getYVelocity());
        boolean swap = false;
        boolean swapRight = false;
        if (minFlingVelocity <= velocityX && velocityX <= maxFlingVelocity && velocityY * 2 < velocityX) {
            swapRight = velocityTracker.getXVelocity() > 0;
            Log.d("SwipeListView", "swapRight: " + swapRight + " - swipingRight: " + swipingRight);
            if (swapRight != swipingRight && swipeActionLeft != swipeActionRight) {
                swap = false;
            } else if (opened.get(downPosition) && openedRight.get(downPosition) && swapRight) {
                swap = false;
            } else if (opened.get(downPosition) && !openedRight.get(downPosition) && !swapRight) {
                swap = false;
            } else {
                swap = true;
            }
        } else if (Math.abs(deltaX) > viewWidth / 2) {
            swap = true;
            swapRight = deltaX > 0;
        }
        generateAnimate(frontView, swap, swapRight, downPosition);
        if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
            swapChoiceState(downPosition);
        }

        velocityTracker.recycle();
        velocityTracker = null;
        downX = 0;
        // change clickable front view
        //                if (swap) {
        //                    frontView.setClickable(opened.get(downPosition));
        //                    frontView.setLongClickable(opened.get(downPosition));
        //                }
        swiping = false;
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        if (velocityTracker == null || paused || downPosition == ListView.INVALID_POSITION) {
            break;
        }

        velocityTracker.addMovement(motionEvent);
        velocityTracker.computeCurrentVelocity(1000);
        float velocityX = Math.abs(velocityTracker.getXVelocity());
        float velocityY = Math.abs(velocityTracker.getYVelocity());

        float deltaX = motionEvent.getRawX() - downX;
        float deltaMode = Math.abs(deltaX);

        int swipeMode = this.swipeMode;
        int changeSwipeMode = swipeListView.changeSwipeMode(downPosition);
        if (changeSwipeMode >= 0) {
            swipeMode = changeSwipeMode;
        }

        if (swipeMode == SwipeListView.SWIPE_MODE_NONE) {
            deltaMode = 0;
        } else if (swipeMode != SwipeListView.SWIPE_MODE_BOTH) {
            if (opened.get(downPosition)) {
                if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && deltaX < 0) {
                    deltaMode = 0;
                } else if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && deltaX > 0) {
                    deltaMode = 0;
                }
            } else {
                if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && deltaX > 0) {
                    deltaMode = 0;
                } else if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && deltaX < 0) {
                    deltaMode = 0;
                }
            }
        }
        if (deltaMode > slop && swipeCurrentAction == SwipeListView.SWIPE_ACTION_NONE
                && velocityY < velocityX) {
            swiping = true;
            swipingRight = (deltaX > 0);
            Log.d("SwipeListView", "deltaX: " + deltaX + " - swipingRight: " + swipingRight);
            if (opened.get(downPosition)) {
                swipeListView.onStartClose(downPosition, swipingRight);
                swipeCurrentAction = SwipeListView.SWIPE_ACTION_REVEAL;
            } else {
                if (swipingRight && swipeActionRight == SwipeListView.SWIPE_ACTION_DISMISS) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_DISMISS;
                } else if (!swipingRight && swipeActionLeft == SwipeListView.SWIPE_ACTION_DISMISS) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_DISMISS;
                } else if (swipingRight && swipeActionRight == SwipeListView.SWIPE_ACTION_CHOICE) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_CHOICE;
                } else if (!swipingRight && swipeActionLeft == SwipeListView.SWIPE_ACTION_CHOICE) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_CHOICE;
                } else {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_REVEAL;
                }
                swipeListView.onStartOpen(downPosition, swipeCurrentAction, swipingRight);
            }
            swipeListView.requestDisallowInterceptTouchEvent(true);
            MotionEvent cancelEvent = MotionEvent.obtain(motionEvent);
            cancelEvent.setAction(MotionEvent.ACTION_CANCEL
                    | (motionEvent.getActionIndex() << MotionEvent.ACTION_POINTER_INDEX_SHIFT));
            swipeListView.onTouchEvent(cancelEvent);
            if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
                backView.setVisibility(View.GONE);
            }
        }

        if (swiping && downPosition != ListView.INVALID_POSITION) {
            if (opened.get(downPosition)) {
                deltaX += openedRight.get(downPosition) ? viewWidth - rightOffset : -viewWidth + leftOffset;
            }
            move(deltaX);
            return true;
        }
        break;
    }
    }
    return false;
}

---

From source file:com.hynet.mergepay.components.widget.panellayout.ViewDragHelper.java

public void processTouchEvent(MotionEvent ev) {
    final int action = MotionEventCompat.getActionMasked(ev);
    final int actionIndex = MotionEventCompat.getActionIndex(ev);
    if (action == MotionEvent.ACTION_DOWN) {
        // Reset things for a new event stream, just in case we didn't get
        // the whole previous stream.
        cancel();//  w w w . j a v  a2 s .co  m
    }
    if (mVelocityTracker == null) {
        mVelocityTracker = VelocityTracker.obtain();
    }
    mVelocityTracker.addMovement(ev);
    switch (action) {
    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        final int pointerId = MotionEventCompat.getPointerId(ev, 0);
        final View toCapture = findTopChildUnder((int) x, (int) y);
        saveInitialMotion(x, y, pointerId);
        // Since the parent is already directly processing this touch event,
        // there is no reason to delay for a slop before dragging.
        // Start immediately if possible.
        tryCaptureViewForDrag(toCapture, pointerId);
        final int edgesTouched = mInitialEdgesTouched[pointerId];
        if ((edgesTouched & mTrackingEdges) != 0) {
            mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
        }
        break;
    }
    case MotionEventCompat.ACTION_POINTER_DOWN: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        final float x = MotionEventCompat.getX(ev, actionIndex);
        final float y = MotionEventCompat.getY(ev, actionIndex);
        saveInitialMotion(x, y, pointerId);
        // A ViewDragHelper can only manipulate one view at a time.
        if (mDragState == STATE_IDLE) {
            // If we're idle we can do anything! Treat it like a normal down event.
            final View toCapture = findTopChildUnder((int) x, (int) y);
            tryCaptureViewForDrag(toCapture, pointerId);
            final int edgesTouched = mInitialEdgesTouched[pointerId];
            if ((edgesTouched & mTrackingEdges) != 0) {
                mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
            }
        } else if (isCapturedViewUnder((int) x, (int) y)) {
            // We're still tracking a captured view. If the same view is under this
            // point, we'll swap to controlling it with this pointer instead.
            // (This will still work if we're "catching" a settling view.)
            tryCaptureViewForDrag(mCapturedView, pointerId);
        }
        break;
    }
    case MotionEvent.ACTION_MOVE: {
        if (mDragState == STATE_DRAGGING) {
            final int index = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
            final float x = MotionEventCompat.getX(ev, index);
            final float y = MotionEventCompat.getY(ev, index);
            final int idx = (int) (x - mLastMotionX[mActivePointerId]);
            final int idy = (int) (y - mLastMotionY[mActivePointerId]);

            dragTo(mCapturedView.getLeft() + idx, mCapturedView.getTop() + idy, idx, idy);

            saveLastMotion(ev);
        } else {
            // Check to see if any pointer is now over a draggable view.
            final int pointerCount = MotionEventCompat.getPointerCount(ev);
            for (int i = 0; i < pointerCount; i++) {
                final int pointerId = MotionEventCompat.getPointerId(ev, i);
                final float x = MotionEventCompat.getX(ev, i);
                final float y = MotionEventCompat.getY(ev, i);
                final float dx = x - mInitialMotionX[pointerId];
                final float dy = y - mInitialMotionY[pointerId];

                reportNewEdgeDrags(dx, dy, pointerId);
                if (mDragState == STATE_DRAGGING) {
                    // Callback might have started an edge drag.
                    break;
                }

                final View toCapture = findTopChildUnder((int) mInitialMotionX[pointerId],
                        (int) mInitialMotionY[pointerId]);
                if (checkTouchSlop(toCapture, dx, dy) && tryCaptureViewForDrag(toCapture, pointerId)) {
                    break;
                }
            }
            saveLastMotion(ev);
        }
        break;
    }
    case MotionEventCompat.ACTION_POINTER_UP: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        if (mDragState == STATE_DRAGGING && pointerId == mActivePointerId) {
            // Try to find another pointer that's still holding on to the captured view.
            int newActivePointer = INVALID_POINTER;
            final int pointerCount = MotionEventCompat.getPointerCount(ev);
            for (int i = 0; i < pointerCount; i++) {
                final int id = MotionEventCompat.getPointerId(ev, i);
                if (id == mActivePointerId) {
                    // This one's going away, skip.
                    continue;
                }
                final float x = MotionEventCompat.getX(ev, i);
                final float y = MotionEventCompat.getY(ev, i);
                if (findTopChildUnder((int) x, (int) y) == mCapturedView
                        && tryCaptureViewForDrag(mCapturedView, id)) {
                    newActivePointer = mActivePointerId;
                    break;
                }
            }
            if (newActivePointer == INVALID_POINTER) {
                // We didn't find another pointer still touching the view, release it.
                releaseViewForPointerUp();
            }
        }
        clearMotionHistory(pointerId);
        break;
    }
    case MotionEvent.ACTION_UP: {
        if (mDragState == STATE_DRAGGING) {
            releaseViewForPointerUp();
        }
        cancel();
        break;
    }
    case MotionEvent.ACTION_CANCEL: {
        if (mDragState == STATE_DRAGGING) {
            dispatchViewReleased(0, 0);
        }
        cancel();
        break;
    }
    }
}

---

From source file:com.example.refresh.draggridview.DraggableGridViewPager.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    /*/* w w  w . j ava 2  s  .  c  o m*/
     * This method JUST determines whether we want to intercept the motion. If we return true, onMotionEvent will be
    * called and we do the actual scrolling there.
    */

    final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;

    // Always take care of the touch gesture being complete.
    if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP) {
        // Release the drag.
        DEBUG_LOG("Intercept done!");
        mIsBeingDragged = false;
        mIsUnableToDrag = false;
        mActivePointerId = INVALID_POINTER;
        if (mVelocityTracker != null) {
            mVelocityTracker.recycle();
            mVelocityTracker = null;
        }
        return false;
    }

    // Nothing more to do here if we have decided whether or not we
    // are dragging.
    if (action != MotionEvent.ACTION_DOWN) {
        if (mIsBeingDragged || mLastDragged >= 0) {
            DEBUG_LOG("Intercept returning true!");
            return true;
        }
        if (mIsUnableToDrag) {
            DEBUG_LOG("Intercept returning false!");
            return false;
        }
    }

    switch (action) {
    case MotionEvent.ACTION_MOVE: {
        /*
         * mIsBeingDragged == false, otherwise the shortcut would have caught it. Check whether the user has moved
         * far enough from his original down touch.
         */

        /*
         * Locally do absolute value. mLastMotionY is set to the y value of the down event.
         */
        final int activePointerId = mActivePointerId;
        if (activePointerId == INVALID_POINTER) {
            // If we don't have a valid id, the touch down wasn't on content.
            break;
        }

        final int pointerIndex = MotionEventCompat.findPointerIndex(ev, activePointerId);
        final float x = MotionEventCompat.getX(ev, pointerIndex);
        final float dx = x - mLastMotionX;
        final float xDiff = Math.abs(dx);
        final float y = MotionEventCompat.getY(ev, pointerIndex);
        final float yDiff = Math.abs(y - mInitialMotionY);
        DEBUG_LOG("***Moved to " + x + "," + y + " diff=" + xDiff + "," + yDiff);

        if (xDiff > mTouchSlop && xDiff * 0.5f > yDiff) {
            DEBUG_LOG("***Starting drag!");
            mIsBeingDragged = true;
            requestParentDisallowInterceptTouchEvent(true);
            setScrollState(SCROLL_STATE_DRAGGING);
            mLastMotionX = dx > 0 ? mInitialMotionX + mTouchSlop : mInitialMotionX - mTouchSlop;
            mLastMotionY = y;
            setScrollingCacheEnabled(true);
        } else if (yDiff > mTouchSlop) {
            // The finger has moved enough in the vertical
            // direction to be counted as a drag... abort
            // any attempt to drag horizontally, to work correctly
            // with children that have scrolling containers.
            DEBUG_LOG("***Unable to drag!");
            mIsUnableToDrag = true;
        }
        if (mIsBeingDragged) {
            // Scroll to follow the motion event
            if (performDrag(x)) {
                ViewCompat.postInvalidateOnAnimation(this);
            }
        }
        break;
    }

    case MotionEvent.ACTION_DOWN: {
        /*
         * Remember location of down touch. ACTION_DOWN always refers to pointer index 0.
         */
        mLastMotionX = mInitialMotionX = ev.getX();
        mLastMotionY = mInitialMotionY = ev.getY();
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
        mIsUnableToDrag = false;

        mScroller.computeScrollOffset();
        if (mScrollState == SCROLL_STATE_SETTLING
                && Math.abs(mScroller.getFinalX() - mScroller.getCurrX()) > mCloseEnough) {
            // Let the user 'catch' the pager as it animates.
            mScroller.abortAnimation();
            mIsBeingDragged = true;
            requestParentDisallowInterceptTouchEvent(true);
            setScrollState(SCROLL_STATE_DRAGGING);
        } else {
            completeScroll(false);
            mIsBeingDragged = false;
        }

        DEBUG_LOG("***Down at " + mLastMotionX + "," + mLastMotionY + " mIsBeingDragged=" + mIsBeingDragged
                + " mIsUnableToDrag=" + mIsUnableToDrag);
        mLastDragged = -1;
        break;
    }

    case MotionEventCompat.ACTION_POINTER_UP:
        onSecondaryPointerUp(ev);
        break;
    }

    if (mVelocityTracker == null) {
        mVelocityTracker = VelocityTracker.obtain();
    }
    mVelocityTracker.addMovement(ev);

    /*
     * The only time we want to intercept motion events is if we are in the drag mode.
     */
    return mIsBeingDragged;
}

---

From source file:com.coco.draggablegridviewpager.DraggableGridViewPager.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    /*/*from   w ww  . j  a v  a 2  s. c  o  m*/
     * This method JUST determines whether we want to intercept the motion. If we return true, onMotionEvent will be
     * called and we do the actual scrolling there.
     */

    final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;

    // Always take care of the touch gesture being complete.
    if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP) {
        // Release the drag.
        DEBUG_LOG("Intercept done!");
        mIsBeingDragged = false;
        mIsUnableToDrag = false;
        mActivePointerId = INVALID_POINTER;
        if (mVelocityTracker != null) {
            mVelocityTracker.recycle();
            mVelocityTracker = null;
        }
        return false;
    }

    // Nothing more to do here if we have decided whether or not we
    // are dragging.
    if (action != MotionEvent.ACTION_DOWN) {
        if (mIsBeingDragged || mLastDragged >= 0) {
            DEBUG_LOG("Intercept returning true!");
            return true;
        }
        if (mIsUnableToDrag) {
            DEBUG_LOG("Intercept returning false!");
            return false;
        }
    }

    switch (action) {
    case MotionEvent.ACTION_MOVE: {
        /*
         * mIsBeingDragged == false, otherwise the shortcut would have caught it. Check whether the user has moved
         * far enough from his original down touch.
         */

        /*
         * Locally do absolute value. mLastMotionY is set to the y value of the down event.
         */
        final int activePointerId = mActivePointerId;
        if (activePointerId == INVALID_POINTER) {
            // If we don't have a valid id, the touch down wasn't on content.
            break;
        }

        final int pointerIndex = MotionEventCompat.findPointerIndex(ev, activePointerId);
        final float x = MotionEventCompat.getX(ev, pointerIndex);
        final float dx = x - mLastMotionX;
        final float xDiff = Math.abs(dx);
        final float y = MotionEventCompat.getY(ev, pointerIndex);
        final float yDiff = Math.abs(y - mInitialMotionY);
        DEBUG_LOG("***Moved to " + x + "," + y + " diff=" + xDiff + "," + yDiff);

        if (xDiff > mTouchSlop && xDiff * 0.5f > yDiff) {
            DEBUG_LOG("***Starting drag!");
            mIsBeingDragged = true;
            requestParentDisallowInterceptTouchEvent(true);
            setScrollState(SCROLL_STATE_DRAGGING);
            mLastMotionX = dx > 0 ? mInitialMotionX + mTouchSlop : mInitialMotionX - mTouchSlop;
            mLastMotionY = y;
            setScrollingCacheEnabled(true);
        } else if (yDiff > mTouchSlop) {
            // The finger has moved enough in the vertical
            // direction to be counted as a drag... abort
            // any attempt to drag horizontally, to work correctly
            // with children that have scrolling containers.
            DEBUG_LOG("***Unable to drag!");
            mIsUnableToDrag = true;
        }
        if (mIsBeingDragged) {
            // Scroll to follow the motion event
            if (performDrag(x)) {
                ViewCompat.postInvalidateOnAnimation(this);
            }
        }
        break;
    }

    case MotionEvent.ACTION_DOWN: {
        /*
         * Remember location of down touch. ACTION_DOWN always refers to pointer index 0.
         */
        mLastMotionX = mInitialMotionX = ev.getX();
        mLastMotionY = mInitialMotionY = ev.getY();
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
        mIsUnableToDrag = false;

        mScroller.computeScrollOffset();
        if (mScrollState == SCROLL_STATE_SETTLING
                && Math.abs(mScroller.getFinalX() - mScroller.getCurrX()) > mCloseEnough) {
            // Let the user 'catch' the pager as it animates.
            mScroller.abortAnimation();
            mIsBeingDragged = true;
            requestParentDisallowInterceptTouchEvent(true);
            setScrollState(SCROLL_STATE_DRAGGING);
        } else {
            completeScroll(false);
            mIsBeingDragged = false;
        }

        DEBUG_LOG("***Down at " + mLastMotionX + "," + mLastMotionY + " mIsBeingDragged=" + mIsBeingDragged
                + " mIsUnableToDrag=" + mIsUnableToDrag);
        mLastDragged = -1;
        break;
    }

    case MotionEventCompat.ACTION_POINTER_UP:
        onSecondaryPointerUp(ev);
        break;
    }

    if (mVelocityTracker == null) {
        mVelocityTracker = VelocityTracker.obtain();
    }
    mVelocityTracker.addMovement(ev);

    /*
     * The only time we want to intercept motion events is if we are in the drag mode.
     */
    return mIsBeingDragged;
}

---

From source file:com.chillax.swipelistview.SwipeListViewTouchListener.java

/**
 * @see View.OnTouchListener#onTouch(android.view.View, android.view.MotionEvent)
 *//*from  ww  w.j ava 2  s.c  o m*/
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
    if (!isSwipeEnabled()) {
        return false;
    }

    if (viewWidth < 2) {
        viewWidth = swipeListView.getWidth();
    }

    switch (MotionEventCompat.getActionMasked(motionEvent)) {
    case MotionEvent.ACTION_DOWN: {
        if (paused && downPosition != ListView.INVALID_POSITION) {
            return false;
        }
        swipeCurrentAction = SwipeListView.SWIPE_ACTION_NONE;

        int childCount = swipeListView.getChildCount();
        int[] listViewCoords = new int[2];
        swipeListView.getLocationOnScreen(listViewCoords);
        int x = (int) motionEvent.getRawX() - listViewCoords[0];
        int y = (int) motionEvent.getRawY() - listViewCoords[1];
        View child;
        for (int i = 0; i < childCount; i++) {
            child = swipeListView.getChildAt(i);
            child.getHitRect(rect);

            int childPosition = swipeListView.getPositionForView(child);

            // dont allow swiping if this is on the header or footer or IGNORE_ITEM_VIEW_TYPE or enabled is false on the adapter
            boolean allowSwipe = swipeListView.getAdapter().isEnabled(childPosition)
                    && swipeListView.getAdapter().getItemViewType(childPosition) >= 0;

            if (allowSwipe && rect.contains(x, y)) {
                setParentView(child);
                setFrontView(child.findViewById(swipeFrontView));

                downX = motionEvent.getRawX();
                downPosition = childPosition;

                frontView.setClickable(!opened.get(downPosition));
                frontView.setLongClickable(!opened.get(downPosition));

                velocityTracker = VelocityTracker.obtain();
                velocityTracker.addMovement(motionEvent);
                if (swipeBackView > 0) {
                    setBackView(child.findViewById(swipeBackView));
                }
                break;
            }
        }
        view.onTouchEvent(motionEvent);
        return true;
    }

    case MotionEvent.ACTION_UP: {
        if (velocityTracker == null || !swiping || downPosition == ListView.INVALID_POSITION) {
            break;
        }

        float deltaX = motionEvent.getRawX() - downX;
        velocityTracker.addMovement(motionEvent);
        velocityTracker.computeCurrentVelocity(1000);
        float velocityX = Math.abs(velocityTracker.getXVelocity());
        if (!opened.get(downPosition)) {
            if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && velocityTracker.getXVelocity() > 0) {
                velocityX = 0;
            }
            if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && velocityTracker.getXVelocity() < 0) {
                velocityX = 0;
            }
        }
        float velocityY = Math.abs(velocityTracker.getYVelocity());
        boolean swap = false;
        boolean swapRight = false;
        if (minFlingVelocity <= velocityX && velocityX <= maxFlingVelocity && velocityY * 2 < velocityX) {
            swapRight = velocityTracker.getXVelocity() > 0;
            if (SwipeListView.DEBUG) {
                Log.d(SwipeListView.TAG, "swapRight: " + swapRight + " - swipingRight: " + swipingRight);
            }
            if (swapRight != swipingRight && swipeActionLeft != swipeActionRight) {
                swap = false;
            } else if (opened.get(downPosition) && openedRight.get(downPosition) && swapRight) {
                swap = false;
            } else
                swap = !(opened.get(downPosition) && !openedRight.get(downPosition) && !swapRight);
        } else if (Math.abs(deltaX) > viewWidth / 2) {
            swap = true;
            swapRight = deltaX > 0;
        }

        generateAnimate(frontView, swap, swapRight, downPosition);
        if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
            swapChoiceState(downPosition);
        }

        velocityTracker.recycle();
        velocityTracker = null;
        downX = 0;
        // change clickable front view
        //                if (swap) {
        //                    frontView.setClickable(opened.get(downPosition));
        //                    frontView.setLongClickable(opened.get(downPosition));
        //                }
        swiping = false;
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        if (velocityTracker == null || paused || downPosition == ListView.INVALID_POSITION) {
            break;
        }

        velocityTracker.addMovement(motionEvent);
        velocityTracker.computeCurrentVelocity(1000);
        float velocityX = Math.abs(velocityTracker.getXVelocity());
        float velocityY = Math.abs(velocityTracker.getYVelocity());

        float deltaX = motionEvent.getRawX() - downX;
        float deltaMode = Math.abs(deltaX);

        int swipeMode = this.swipeMode;
        int changeSwipeMode = swipeListView.changeSwipeMode(downPosition);
        if (changeSwipeMode >= 0) {
            swipeMode = changeSwipeMode;
        }

        if (swipeMode == SwipeListView.SWIPE_MODE_NONE) {
            deltaMode = 0;
        } else if (swipeMode != SwipeListView.SWIPE_MODE_BOTH) {
            if (opened.get(downPosition)) {
                if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && deltaX < 0) {
                    deltaMode = 0;
                } else if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && deltaX > 0) {
                    deltaMode = 0;
                }
            } else {
                if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && deltaX > 0) {
                    deltaMode = 0;
                } else if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && deltaX < 0) {
                    deltaMode = 0;
                }
            }
        }
        if (deltaMode > slop && swipeCurrentAction == SwipeListView.SWIPE_ACTION_NONE
                && velocityY < velocityX) {
            swiping = true;
            swipingRight = (deltaX > 0);
            if (SwipeListView.DEBUG) {
                Log.d(SwipeListView.TAG, "deltaX: " + deltaX + " - swipingRight: " + swipingRight);
            }
            if (opened.get(downPosition)) {
                swipeListView.onStartClose(downPosition, swipingRight);
                swipeCurrentAction = SwipeListView.SWIPE_ACTION_REVEAL;
            } else {
                if (swipingRight && swipeActionRight == SwipeListView.SWIPE_ACTION_DISMISS) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_DISMISS;
                } else if (!swipingRight && swipeActionLeft == SwipeListView.SWIPE_ACTION_DISMISS) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_DISMISS;
                } else if (swipingRight && swipeActionRight == SwipeListView.SWIPE_ACTION_CHOICE) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_CHOICE;
                } else if (!swipingRight && swipeActionLeft == SwipeListView.SWIPE_ACTION_CHOICE) {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_CHOICE;
                } else {
                    swipeCurrentAction = SwipeListView.SWIPE_ACTION_REVEAL;
                }
                swipeListView.onStartOpen(downPosition, swipeCurrentAction, swipingRight);
            }
            swipeListView.requestDisallowInterceptTouchEvent(true);
            MotionEvent cancelEvent = MotionEvent.obtain(motionEvent);
            cancelEvent.setAction(MotionEvent.ACTION_CANCEL | (MotionEventCompat
                    .getActionIndex(motionEvent) << MotionEventCompat.ACTION_POINTER_INDEX_SHIFT));
            swipeListView.onTouchEvent(cancelEvent);
            if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
                backView.setVisibility(View.GONE);
            }
        }

        if (swiping && downPosition != ListView.INVALID_POSITION) {
            if (opened.get(downPosition)) {
                deltaX += openedRight.get(downPosition) ? viewWidth - rightOffset : -viewWidth + leftOffset;
            }
            move(deltaX);
            return true;
        }
        break;
    }
    }
    return false;
}

---

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