Example usage for android.support.v4.view MotionEventCompat getPointerId

List of usage examples for android.support.v4.view MotionEventCompat getPointerId

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Introduction

In this page you can find the example usage for android.support.v4.view MotionEventCompat getPointerId.

Prototype

public static int getPointerId(MotionEvent event, int pointerIndex)

Source Link

Document

Call MotionEvent#getPointerId(int) .

Usage

From source file:com.example.adminstrator.pullrefresh.SwipeRefreshLayout.java

@Override
public boolean onTouchEvent(MotionEvent ev) {
    final int action = MotionEventCompat.getActionMasked(ev);

    if (mRefreshing || mLoading) {
        return true;
    }/*w  w w .j  av a 2s . c o m*/

    if (mReturningToStart && action == MotionEvent.ACTION_DOWN) {
        mReturningToStart = false;
    }

    if (!isEnabled() || mReturningToStart) {
        // Fail fast if we're not in a state where a swipe is possible
        return false;
    }

    switch (action) {
    case MotionEvent.ACTION_DOWN:
        mLastMotionY = mInitialMotionY = ev.getY();
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
        mIsBeingDragged = false;
        mCurrPercentage = 0;
        mStartPoint = mInitialMotionY;

        up = canChildScrollUp();
        down = canChildScrollDown();
        break;

    case MotionEvent.ACTION_MOVE:

        final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
        if (pointerIndex < 0) {
            Log.e(LOG_TAG, "Got ACTION_MOVE event but have an invalid active pointer id.");
            return false;
        }

        final float y = MotionEventCompat.getY(ev, pointerIndex);
        //                final float yDiff = y - mInitialMotionY;
        final float yDiff = y - mStartPoint;

        if ((mLastDirection == Mode.PULL_FROM_START && yDiff < 0)
                || (mLastDirection == Mode.PULL_FROM_END && yDiff > 0)) {
            return true;
        }

        if (!mIsBeingDragged && (yDiff > 0 && mLastDirection == Mode.PULL_FROM_START)
                || (yDiff < 0 && mLastDirection == Mode.PULL_FROM_END)) {
            mIsBeingDragged = true;
        }

        if (mIsBeingDragged) {
            // User velocity passed min velocity; trigger a refresh
            if (yDiff > mDistanceToTriggerSync) {
                // User movement passed distance; trigger a refresh
                if (mLastDirection == Mode.PULL_FROM_END) {
                    return true;

                }
                if ((mMode == Mode.PULL_FROM_START) || (mMode == Mode.BOTH)) {
                    mLastDirection = Mode.PULL_FROM_START;
                    //   startRefresh();
                    canPullRefresh = true;
                    mProgressBar.setState(PULL_DOWN, PULL_CAN_REFRESH);
                }
            } else if (-yDiff > mDistanceToTriggerSync) {
                if ((!up && !down && !loadNoFull) || mLastDirection == Mode.PULL_FROM_START) {
                    return true;
                }
                if ((mMode == Mode.PULL_FROM_END) || (mMode == Mode.BOTH)) {
                    mLastDirection = Mode.PULL_FROM_END;
                    mProgressBarBottom.setState(PULL_UP, PULL_CAN_REFRESH);
                    canPullLoad = true;
                    //startLoad();
                }
            } else {
                mProgressBar.setState(PULL_DOWN, PULL_START);
                mProgressBarBottom.setState(PULL_UP, PULL_START);
                canPullRefresh = false;
                canPullLoad = false;
            }
            if (!up && !down && yDiff < 0 && !loadNoFull) {
                return true;
            }
            // Just track the user's movement
            //???

            updateContentOffsetTop((int) yDiff);
            if (mTarget.getTop() == getPaddingTop()) {
                // If the user puts the view back at the top, we
                // don't need to. This shouldn't be considered
                // cancelling the gesture as the user can restart from the top.
                removeCallbacks(mCancel);
                mLastDirection = Mode.DISABLED;
            } else {
                mDirection = (yDiff > 0 ? 1 : -1);
                // updatePositionTimeout();
            }
            // }
            mLastMotionY = y;
        }
        break;

    case MotionEventCompat.ACTION_POINTER_DOWN: {
        final int index = MotionEventCompat.getActionIndex(ev);
        mLastMotionY = MotionEventCompat.getY(ev, index);
        mActivePointerId = MotionEventCompat.getPointerId(ev, index);
        break;
    }

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

    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL:
        mIsBeingDragged = false;
        mCurrPercentage = 0;
        mActivePointerId = INVALID_POINTER;
        mLastDirection = Mode.DISABLED;
        final int index = MotionEventCompat.getActionIndex(ev);
        float upY = MotionEventCompat.getY(ev, index);
        if (canPullRefresh) {
            //animationOffsetToTriggerRefresPosition(mCurrentTargetOffsetTop + getPaddingTop());
            setTargetOffsetTopAndBottom(
                    (int) (mDistanceToTriggerSync - mCurrentTargetOffsetTop - getPaddingTop()));
            startRefresh();
        } else if (canPullLoad) {
            setTargetOffsetTopAndBottom((int) (mStartPoint - upY - mDistanceToTriggerSync));
            startLoad();
        } else {
            updatePositionTimeout1();
        }
        return false;
    }

    return true;
}

From source file:anabolicandroids.chanobol.util.swipebottom.SwipeRefreshLayoutBottom.java

@Override
public boolean onTouchEvent(MotionEvent ev) {
    final int action = MotionEventCompat.getActionMasked(ev);

    if (mReturningToStart && action == MotionEvent.ACTION_DOWN) {
        mReturningToStart = false;/*w w  w.  j  av  a 2s.  c o m*/
    }

    //if (!isEnabled() || mReturningToStart || canChildScrollUp()) {
    if (!isEnabled() || mReturningToStart || canChildScrollDown()) { // TODO
        // Fail fast if we're not in a state where a swipe is possible
        return false;
    }

    switch (action) {
    case MotionEvent.ACTION_DOWN:
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
        mIsBeingDragged = false;
        break;

    case MotionEvent.ACTION_MOVE: {
        final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
        if (pointerIndex < 0) {
            Log.e(LOG_TAG, "Got ACTION_MOVE event but have an invalid active pointer id.");
            return false;
        }

        final float y = MotionEventCompat.getY(ev, pointerIndex);
        //final float overscrollTop = (y - mInitialMotionY) * DRAG_RATE;
        final float overscrollTop = (mInitialMotionY - y) * DRAG_RATE; // TODO
        if (mIsBeingDragged) {
            mProgress.showArrow(true);
            float originalDragPercent = overscrollTop / mTotalDragDistance;
            if (originalDragPercent < 0) {
                return false;
            }
            float dragPercent = Math.min(1f, Math.abs(originalDragPercent));
            float adjustedPercent = (float) Math.max(dragPercent - .4, 0) * 5 / 3;
            float extraOS = Math.abs(overscrollTop) - mTotalDragDistance;
            float slingshotDist = mUsingCustomStart ? mSpinnerFinalOffset - mOriginalOffsetTop
                    : mSpinnerFinalOffset;
            float tensionSlingshotPercent = Math.max(0, Math.min(extraOS, slingshotDist * 2) / slingshotDist);
            float tensionPercent = (float) ((tensionSlingshotPercent / 4)
                    - Math.pow((tensionSlingshotPercent / 4), 2)) * 2f;
            float extraMove = (slingshotDist) * tensionPercent * 2;

            // int targetY = mOriginalOffsetTop + (int) ((slingshotDist * dragPercent) + extraMove);
            int targetY = mOriginalOffsetTop - (int) ((slingshotDist * dragPercent) + extraMove);
            // where 1.0f is a full circle
            if (mCircleView.getVisibility() != View.VISIBLE) {
                mCircleView.setVisibility(View.VISIBLE);
            }
            if (!mScale) {
                ViewCompat.setScaleX(mCircleView, 1f);
                ViewCompat.setScaleY(mCircleView, 1f);
            }
            if (overscrollTop < mTotalDragDistance) {
                if (mScale) {
                    setAnimationProgress(overscrollTop / mTotalDragDistance);
                }
                if (mProgress.getAlpha() > STARTING_PROGRESS_ALPHA
                        && !isAnimationRunning(mAlphaStartAnimation)) {
                    // Animate the alpha
                    startProgressAlphaStartAnimation();
                }
                float strokeStart = (float) (adjustedPercent * .8f);
                mProgress.setStartEndTrim(0f, Math.min(MAX_PROGRESS_ANGLE, strokeStart));
                mProgress.setArrowScale(Math.min(1f, adjustedPercent));
            } else {
                if (mProgress.getAlpha() < MAX_ALPHA && !isAnimationRunning(mAlphaMaxAnimation)) {
                    // Animate the alpha
                    startProgressAlphaMaxAnimation();
                }
            }
            float rotation = (-0.25f + .4f * adjustedPercent + tensionPercent * 2) * .5f;
            mProgress.setProgressRotation(rotation);
            setTargetOffsetTopAndBottom(targetY - mCurrentTargetOffsetTop, true /* requires update */);
        }
        break;
    }
    case MotionEventCompat.ACTION_POINTER_DOWN: {
        final int index = MotionEventCompat.getActionIndex(ev);
        mActivePointerId = MotionEventCompat.getPointerId(ev, index);
        break;
    }

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

    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL: {
        if (mActivePointerId == INVALID_POINTER) {
            if (action == MotionEvent.ACTION_UP) {
                Log.e(LOG_TAG, "Got ACTION_UP event but don't have an active pointer id.");
            }
            return false;
        }
        final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
        final float y = MotionEventCompat.getY(ev, pointerIndex);
        //final float overscrollTop = (y - mInitialMotionY) * DRAG_RATE;
        final float overscrollTop = (mInitialMotionY - y) * DRAG_RATE; //TODO
        mIsBeingDragged = false;
        if (overscrollTop > mTotalDragDistance) {
            setRefreshing(true, true /* notify */);
        } else {
            // cancel refresh
            mRefreshing = false;
            mProgress.setStartEndTrim(0f, 0f);
            Animation.AnimationListener listener = null;
            if (!mScale) {
                listener = new Animation.AnimationListener() {

                    @Override
                    public void onAnimationStart(Animation animation) {
                    }

                    @Override
                    public void onAnimationEnd(Animation animation) {
                        if (!mScale) {
                            startScaleDownAnimation(null);
                        }
                    }

                    @Override
                    public void onAnimationRepeat(Animation animation) {
                    }

                };
            }
            animateOffsetToStartPosition(mCurrentTargetOffsetTop, listener);
            mProgress.showArrow(false);
        }
        mActivePointerId = INVALID_POINTER;
        return false;
    }
    }

    return true;
}

From source file:com.coleman.demo.view.page.DirectionalViewPager.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    /*//from   w ww.j  av  a2s.c om
     * 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.
        if (DEBUG)
            Log.v(TAG, "Intercept done!");
        mIsBeingDragged = false;
        mIsUnableToDrag = false;
        mActivePointerId = INVALID_POINTER;
        return false;
    }

    // Nothing more to do here if we have decided whether or not we
    // are dragging.
    if (action != MotionEvent.ACTION_DOWN) {
        if (mIsBeingDragged) {
            if (DEBUG)
                Log.v(TAG, "Intercept returning true!");
            return true;
        }
        if (mIsUnableToDrag) {
            if (DEBUG)
                Log.v(TAG, "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 && Build.VERSION.SDK_INT > Build.VERSION_CODES.DONUT) {
            // 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 y = MotionEventCompat.getY(ev, pointerIndex);
        final float xDiff = Math.abs(x - mLastMotionX);
        final float yDiff = Math.abs(y - mLastMotionY);
        float primaryDiff;
        float secondaryDiff;

        if (mOrientation == HORIZONTAL) {
            primaryDiff = xDiff;
            secondaryDiff = yDiff;
        } else {
            primaryDiff = yDiff;
            secondaryDiff = xDiff;
        }

        if (DEBUG)
            Log.v(TAG, "Moved x to " + x + "," + y + " diff=" + xDiff + "," + yDiff);

        if (primaryDiff > mTouchSlop && primaryDiff > secondaryDiff) {
            if (DEBUG)
                Log.v(TAG, "Starting drag!");
            mIsBeingDragged = true;
            setScrollState(SCROLL_STATE_DRAGGING);
            if (mOrientation == HORIZONTAL) {
                mLastMotionX = x;
            } else {
                mLastMotionY = y;
            }
            setScrollingCacheEnabled(true);
        } else {
            if (secondaryDiff > 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.
                if (DEBUG)
                    Log.v(TAG, "Starting unable to drag!");
                mIsUnableToDrag = true;
            }
        }
        break;
    }

    case MotionEvent.ACTION_DOWN: {
        /*
         * Remember location of down touch. ACTION_DOWN always refers to
         * pointer index 0.
         */
        if (mOrientation == HORIZONTAL) {
            mLastMotionX = mInitialMotion = ev.getX();
            mLastMotionY = ev.getY();
        } else {
            mLastMotionX = ev.getX();
            mLastMotionY = mInitialMotion = ev.getY();
        }
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);

        if (mScrollState == SCROLL_STATE_SETTLING) {
            // Let the user 'catch' the pager as it animates.
            mIsBeingDragged = true;
            mIsUnableToDrag = false;
            setScrollState(SCROLL_STATE_DRAGGING);
        } else {
            completeScroll();
            mIsBeingDragged = false;
            mIsUnableToDrag = false;
        }

        if (DEBUG)
            Log.v(TAG, "Down at " + mLastMotionX + "," + mLastMotionY + " mIsBeingDragged=" + mIsBeingDragged
                    + "mIsUnableToDrag=" + mIsUnableToDrag);
        break;
    }

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

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

From source file:cn.com.zzwfang.view.directionalviewpager.DirectionalViewPager.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    /*//from  w  w  w . j a va 2s.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.
        if (DEBUG)
            Log.v(TAG, "Intercept done!");
        mIsBeingDragged = false;
        mIsUnableToDrag = false;
        mActivePointerId = INVALID_POINTER;
        return false;
    }

    // Nothing more to do here if we have decided whether or not we
    // are dragging.
    if (action != MotionEvent.ACTION_DOWN) {
        if (mIsBeingDragged) {
            if (DEBUG)
                Log.v(TAG, "Intercept returning true!");
            return true;
        }
        if (mIsUnableToDrag) {
            if (DEBUG)
                Log.v(TAG, "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 && Build.VERSION.SDK_INT > Build.VERSION_CODES.DONUT) {
            // 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 y = MotionEventCompat.getY(ev, pointerIndex);
        final float xDiff = Math.abs(x - mLastMotionX);
        final float yDiff = Math.abs(y - mLastMotionY);
        float primaryDiff;
        float secondaryDiff;

        if (mOrientation == HORIZONTAL) {
            primaryDiff = xDiff;
            secondaryDiff = yDiff;
        } else {
            primaryDiff = yDiff;
            secondaryDiff = xDiff;
        }

        if (DEBUG)
            Log.v(TAG, "Moved x to " + x + "," + y + " diff=" + xDiff + "," + yDiff);

        if (primaryDiff > mTouchSlop && primaryDiff > secondaryDiff) {
            if (DEBUG)
                Log.v(TAG, "Starting drag!");
            mIsBeingDragged = true;
            setScrollState(SCROLL_STATE_DRAGGING);
            if (mOrientation == HORIZONTAL) {
                mLastMotionX = x;
            } else {
                mLastMotionY = y;
            }
            setScrollingCacheEnabled(true);
        } else {
            if (secondaryDiff > 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.
                if (DEBUG)
                    Log.v(TAG, "Starting unable to drag!");
                mIsUnableToDrag = true;
            }
        }
        break;
    }

    case MotionEvent.ACTION_DOWN: {
        /*
         * Remember location of down touch.
         * ACTION_DOWN always refers to pointer index 0.
         */
        if (mOrientation == HORIZONTAL) {
            mLastMotionX = mInitialMotion = ev.getX();
            mLastMotionY = ev.getY();
        } else {
            mLastMotionX = ev.getX();
            mLastMotionY = mInitialMotion = ev.getY();
        }
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);

        if (mScrollState == SCROLL_STATE_SETTLING) {
            // Let the user 'catch' the pager as it animates.
            mIsBeingDragged = true;
            mIsUnableToDrag = false;
            setScrollState(SCROLL_STATE_DRAGGING);
        } else {
            completeScroll();
            mIsBeingDragged = false;
            mIsUnableToDrag = false;
        }

        if (DEBUG)
            Log.v(TAG, "Down at " + mLastMotionX + "," + mLastMotionY + " mIsBeingDragged=" + mIsBeingDragged
                    + "mIsUnableToDrag=" + mIsUnableToDrag);
        break;
    }

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

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

From source file:com.gmy.widget.swiperefresh.SwipeRefreshLayout.java

private void onSecondaryPointerUp(MotionEvent ev) {
    final int pointerIndex = MotionEventCompat.getActionIndex(ev);
    final int pointerId = MotionEventCompat.getPointerId(ev, pointerIndex);
    if (pointerId == mActivePointerId) {
        // This was our active pointer going up. Choose a new  
        // active pointer and adjust accordingly.  
        final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
        mLastMotionY = MotionEventCompat.getY(ev, newPointerIndex);
        mActivePointerId = MotionEventCompat.getPointerId(ev, newPointerIndex);
    }/*from   ww w . j a va  2 s. c  o m*/
}

From source file:com.harry.refresh.SwipyRefreshLayout.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    if (mDirection == SwipeRefreshLayoutDirection.NONE){
        return false;
    }//  www.  ja v  a 2s .  c  o  m
    ensureTarget();

    final int action = MotionEventCompat.getActionMasked(ev);

    if (mReturningToStart && action == MotionEvent.ACTION_DOWN) {
        mReturningToStart = false;
    }

    switch (mDirection) {
        case BOTTOM:
            if (!isEnabled() || mReturningToStart || (!mBothDirection && canChildScrollDown()) || mRefreshing) {
                // Fail fast if we're not in a state where a swipe is possible
                return false;
            }
            break;
        case TOP:
        default:
            if (!isEnabled() || mReturningToStart || (!mBothDirection && canChildScrollUp()) || mRefreshing) {
                // Fail fast if we're not in a state where a swipe is possible
                return false;
            }
            break;
    }

    switch (action) {
        case MotionEvent.ACTION_DOWN:
            setTargetOffsetTopAndBottom(mOriginalOffsetTop - mCircleView.getTop(), true);
            mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
            mIsBeingDragged = false;
            final float initialDownY = getMotionEventY(ev, mActivePointerId);
            if (initialDownY == -1) {
                return false;
            }
            mInitialDownY = initialDownY;

        case MotionEvent.ACTION_MOVE:
            if (mActivePointerId == INVALID_POINTER) {
                return false;
            }

            final float y = getMotionEventY(ev, mActivePointerId);
            if (y == -1) {
                return false;
            }
            if (mBothDirection) {
                if (y > mInitialDownY) {
                    setRawDirection(SwipeRefreshLayoutDirection.TOP);
                } else if (y < mInitialDownY) {
                    setRawDirection(SwipeRefreshLayoutDirection.BOTTOM);
                }
                if ((mDirection == SwipeRefreshLayoutDirection.BOTTOM && canChildScrollDown())
                        || (mDirection == SwipeRefreshLayoutDirection.TOP && canChildScrollUp())) {
                    mInitialDownY = y;
                    return false;
                }
            }
            float yDiff;
            switch (mDirection) {
                case BOTTOM:
                    yDiff = mInitialDownY - y;
                    break;
                case TOP:
                default:
                    yDiff = y - mInitialDownY;
                    break;
            }
            if (yDiff > mTouchSlop && !mIsBeingDragged) {
                switch (mDirection) {
                    case BOTTOM:
                        mInitialMotionY = mInitialDownY - mTouchSlop;
                        break;
                    case TOP:
                    default:
                        mInitialMotionY = mInitialDownY + mTouchSlop;
                        break;
                }
                mIsBeingDragged = true;
                mProgress.setAlpha(STARTING_PROGRESS_ALPHA);
            }
            break;

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

        case MotionEvent.ACTION_UP:
        case MotionEvent.ACTION_CANCEL:
            mIsBeingDragged = false;
            mActivePointerId = INVALID_POINTER;
            break;
    }

    return mIsBeingDragged;
}

From source file:cn.org.eshow.framwork.view.slidingmenu.CustomViewAbove.java

@Override
public boolean onTouchEvent(MotionEvent ev) {

    if (!mEnabled)
        return false;

    if (!mIsBeingDragged && !thisTouchAllowed(ev))
        return false;

    //      if (!mIsBeingDragged && !mQuickReturn)
    //         return false;

    final int action = ev.getAction();

    if (mVelocityTracker == null) {
        mVelocityTracker = VelocityTracker.obtain();
    }// w w w . jav a 2s . co m
    mVelocityTracker.addMovement(ev);

    switch (action & MotionEventCompat.ACTION_MASK) {
    case MotionEvent.ACTION_DOWN:
        /*
         * If being flinged and user touches, stop the fling. isFinished
         * will be false if being flinged.
         */
        completeScroll();

        // Remember where the motion event started
        int index = MotionEventCompat.getActionIndex(ev);
        mActivePointerId = MotionEventCompat.getPointerId(ev, index);
        mLastMotionX = mInitialMotionX = ev.getX();
        break;
    case MotionEvent.ACTION_MOVE:
        if (!mIsBeingDragged) {
            determineDrag(ev);
            if (mIsUnableToDrag)
                return false;
        }
        if (mIsBeingDragged) {
            // Scroll to follow the motion event
            final int activePointerIndex = getPointerIndex(ev, mActivePointerId);
            if (mActivePointerId == INVALID_POINTER)
                break;
            final float x = MotionEventCompat.getX(ev, activePointerIndex);
            final float deltaX = mLastMotionX - x;
            mLastMotionX = x;
            float oldScrollX = getScrollX();
            float scrollX = oldScrollX + deltaX;
            final float leftBound = getLeftBound();
            final float rightBound = getRightBound();
            if (scrollX < leftBound) {
                scrollX = leftBound;
            } else if (scrollX > rightBound) {
                scrollX = rightBound;
            }
            // Don't lose the rounded component
            mLastMotionX += scrollX - (int) scrollX;
            scrollTo((int) scrollX, getScrollY());
            pageScrolled((int) scrollX);
        }
        break;
    case MotionEvent.ACTION_UP:
        if (mIsBeingDragged) {
            final VelocityTracker velocityTracker = mVelocityTracker;
            velocityTracker.computeCurrentVelocity(1000, mMaximumVelocity);
            int initialVelocity = (int) VelocityTrackerCompat.getXVelocity(velocityTracker, mActivePointerId);
            final int scrollX = getScrollX();
            //            final int widthWithMargin = getWidth();
            //            final float pageOffset = (float) (scrollX % widthWithMargin) / widthWithMargin;
            // TODO test this. should get better flinging behavior
            final float pageOffset = (float) (scrollX - getDestScrollX(mCurItem)) / getBehindWidth();
            final int activePointerIndex = getPointerIndex(ev, mActivePointerId);
            if (mActivePointerId != INVALID_POINTER) {
                final float x = MotionEventCompat.getX(ev, activePointerIndex);
                final int totalDelta = (int) (x - mInitialMotionX);
                int nextPage = determineTargetPage(pageOffset, initialVelocity, totalDelta);
                setCurrentItemInternal(nextPage, true, true, initialVelocity);
            } else {
                setCurrentItemInternal(mCurItem, true, true, initialVelocity);
            }
            mActivePointerId = INVALID_POINTER;
            endDrag();
        } else if (mQuickReturn
                && mViewBehind.menuTouchInQuickReturn(mContent, mCurItem, ev.getX() + mScrollX)) {
            // close the menu
            setCurrentItem(1);
            endDrag();
        }
        break;
    case MotionEvent.ACTION_CANCEL:
        if (mIsBeingDragged) {
            setCurrentItemInternal(mCurItem, true, true);
            mActivePointerId = INVALID_POINTER;
            endDrag();
        }
        break;
    case MotionEventCompat.ACTION_POINTER_DOWN: {
        final int indexx = MotionEventCompat.getActionIndex(ev);
        mLastMotionX = MotionEventCompat.getX(ev, indexx);
        mActivePointerId = MotionEventCompat.getPointerId(ev, indexx);
        break;
    }
    case MotionEventCompat.ACTION_POINTER_UP:
        onSecondaryPointerUp(ev);
        int pointerIndex = getPointerIndex(ev, mActivePointerId);
        if (mActivePointerId == INVALID_POINTER)
            break;
        mLastMotionX = MotionEventCompat.getX(ev, pointerIndex);
        break;
    }
    return true;
}

From source file:com.hiyjeain.android.DevBase.widget.DoubleSwipeRefreshLayout.java

@Override
public boolean onTouchEvent(MotionEvent ev) {
    final int action = MotionEventCompat.getActionMasked(ev);

    if (mReturningToStart && action == MotionEvent.ACTION_DOWN) {
        // Garrett: If the Circle is returning to start position,
        //          and the user touch down the screen.
        //          Stop returning?
        mReturningToStart = false;//from   w  ww .ja  v a2s .c o  m
    }

    if (!isEnabled() || mReturningToStart || canChildScrollUp()) {
        // Fail fast if we're not in a state where a swipe is possible
        return false;
    }

    switch (action) {
    case MotionEvent.ACTION_DOWN:
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
        mIsBeingDragged = false;
        break;

    case MotionEvent.ACTION_MOVE: {
        final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
        if (pointerIndex < 0) {
            Log.e(LOG_TAG, "Got ACTION_MOVE event but have an invalid active pointer id.");
            return false;
        }

        final float y = MotionEventCompat.getY(ev, pointerIndex);
        final float overscrollTop = (y - mInitialMotionY) * DRAG_RATE;
        if (mIsBeingDragged) {
            mProgress.showArrow(true);
            // Garrett: TODO 1 start
            float originalDragPercent = overscrollTop / mTotalDragDistance;
            if (originalDragPercent < 0) {
                return false;
            }
            float dragPercent = Math.min(1f, Math.abs(originalDragPercent));
            float adjustedPercent = (float) Math.max(dragPercent - .4, 0) * 5 / 3;
            float extraOS = Math.abs(overscrollTop) - mTotalDragDistance;
            float slingshotDist = mUsingCustomStart ? mSpinnerFinalOffset - mOriginalOffsetTop
                    : mSpinnerFinalOffset;
            float tensionSlingshotPercent = Math.max(0, Math.min(extraOS, slingshotDist * 2) / slingshotDist);
            float tensionPercent = (float) ((tensionSlingshotPercent / 4)
                    - Math.pow((tensionSlingshotPercent / 4), 2)) * 2f;
            float extraMove = (slingshotDist) * tensionPercent * 2;

            int targetY = mOriginalOffsetTop + (int) ((slingshotDist * dragPercent) + extraMove);
            // Garrett: TODO 1 end
            // where 1.0f is a full circle
            if (mCircleView.getVisibility() != View.VISIBLE) {
                mCircleView.setVisibility(View.VISIBLE);
            }
            if (!mScale) {
                ViewCompat.setScaleX(mCircleView, 1f);
                ViewCompat.setScaleY(mCircleView, 1f);
            }
            if (overscrollTop < mTotalDragDistance) {
                if (mScale) {
                    setAnimationProgress(overscrollTop / mTotalDragDistance);
                }
                if (mProgress.getAlpha() > STARTING_PROGRESS_ALPHA
                        && !isAnimationRunning(mAlphaStartAnimation)) {
                    // Animate the alpha
                    startProgressAlphaStartAnimation();
                }
                float strokeStart = (float) (adjustedPercent * .8f);
                mProgress.setStartEndTrim(0f, Math.min(MAX_PROGRESS_ANGLE, strokeStart));
                mProgress.setArrowScale(Math.min(1f, adjustedPercent));
            } else {
                if (mProgress.getAlpha() < MAX_ALPHA && !isAnimationRunning(mAlphaMaxAnimation)) {
                    // Animate the alpha
                    startProgressAlphaMaxAnimation();
                }
            }
            float rotation = (-0.25f + .4f * adjustedPercent + tensionPercent * 2) * .5f;
            mProgress.setProgressRotation(rotation);
            setTargetOffsetTopAndBottom(targetY - mCurrentTargetOffsetTop, true /* requires update */);
        }
        break;
    }
    case MotionEventCompat.ACTION_POINTER_DOWN: {
        final int index = MotionEventCompat.getActionIndex(ev);
        mActivePointerId = MotionEventCompat.getPointerId(ev, index);
        break;
    }

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

    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL: {
        if (mActivePointerId == INVALID_POINTER) {
            if (action == MotionEvent.ACTION_UP) {
                Log.e(LOG_TAG, "Got ACTION_UP event but don't have an active pointer id.");
            }
            return false;
        }
        final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
        final float y = MotionEventCompat.getY(ev, pointerIndex);
        final float overscrollTop = (y - mInitialMotionY) * DRAG_RATE;
        mIsBeingDragged = false;
        if (overscrollTop > mTotalDragDistance) {
            setRefreshing(true, true /* notify */);
        } else {
            // cancel refresh
            mRefreshing = false;
            mProgress.setStartEndTrim(0f, 0f);
            AnimationListener listener = null;
            if (!mScale) {
                listener = new AnimationListener() {

                    @Override
                    public void onAnimationStart(Animation animation) {
                    }

                    @Override
                    public void onAnimationEnd(Animation animation) {
                        if (!mScale) {
                            startScaleDownAnimation(null);
                        }
                    }

                    @Override
                    public void onAnimationRepeat(Animation animation) {
                    }

                };
            }
            animateOffsetToStartPosition(mCurrentTargetOffsetTop, listener);
            mProgress.showArrow(false);
        }
        mActivePointerId = INVALID_POINTER;
        return false;
    }
    }

    return true;
}

From source file:com.bofsoft.sdk.widget.menu.slidingmenu.CustomViewAbove.java

@Override
public boolean onTouchEvent(MotionEvent ev) {

    if (!mEnabled)
        return false;

    if (!mIsBeingDragged && !thisTouchAllowed(ev))
        return false;

    // if (!mIsBeingDragged && !mQuickReturn)
    // return false;

    final int action = ev.getAction();

    if (mVelocityTracker == null) {
        mVelocityTracker = VelocityTracker.obtain();
    }//from  w w  w  .j  a  v  a2s  .com
    mVelocityTracker.addMovement(ev);

    switch (action & MotionEventCompat.ACTION_MASK) {
    case MotionEvent.ACTION_DOWN:
        /*
         * If being flinged and user touches, stop the fling. isFinished will be false if being
         * flinged.
         */
        completeScroll();

        // Remember where the motion event started
        int index = MotionEventCompat.getActionIndex(ev);
        mActivePointerId = MotionEventCompat.getPointerId(ev, index);
        mLastMotionX = mInitialMotionX = ev.getX();
        break;
    case MotionEvent.ACTION_MOVE:
        if (!mIsBeingDragged) {
            determineDrag(ev);
            if (mIsUnableToDrag)
                return false;
        }
        if (mIsBeingDragged) {
            // Scroll to follow the motion event
            final int activePointerIndex = getPointerIndex(ev, mActivePointerId);
            if (mActivePointerId == INVALID_POINTER)
                break;
            final float x = MotionEventCompat.getX(ev, activePointerIndex);
            final float deltaX = mLastMotionX - x;
            mLastMotionX = x;
            float oldScrollX = getScrollX();
            float scrollX = oldScrollX + deltaX;
            final float leftBound = getLeftBound();
            final float rightBound = getRightBound();
            if (scrollX < leftBound) {
                scrollX = leftBound;
            } else if (scrollX > rightBound) {
                scrollX = rightBound;
            }
            // Don't lose the rounded component
            mLastMotionX += scrollX - (int) scrollX;
            scrollTo((int) scrollX, getScrollY());
            pageScrolled((int) scrollX);
        }
        break;
    case MotionEvent.ACTION_UP:
        if (mIsBeingDragged) {
            final VelocityTracker velocityTracker = mVelocityTracker;
            velocityTracker.computeCurrentVelocity(1000, mMaximumVelocity);
            int initialVelocity = (int) VelocityTrackerCompat.getXVelocity(velocityTracker, mActivePointerId);
            final int scrollX = getScrollX();
            // final int widthWithMargin = getWidth();
            // final float pageOffset = (float) (scrollX % widthWithMargin) / widthWithMargin;
            // TODO test this. should get better flinging behavior
            final float pageOffset = (float) (scrollX - getDestScrollX(mCurItem)) / getBehindWidth();
            final int activePointerIndex = getPointerIndex(ev, mActivePointerId);
            if (mActivePointerId != INVALID_POINTER) {
                final float x = MotionEventCompat.getX(ev, activePointerIndex);
                final int totalDelta = (int) (x - mInitialMotionX);
                int nextPage = determineTargetPage(pageOffset, initialVelocity, totalDelta);
                setCurrentItemInternal(nextPage, true, true, initialVelocity);
            } else {
                setCurrentItemInternal(mCurItem, true, true, initialVelocity);
            }
            mActivePointerId = INVALID_POINTER;
            endDrag();
        } else if (mQuickReturn
                && mViewBehind.menuTouchInQuickReturn(mContent, mCurItem, ev.getX() + mScrollX)) {
            // close the menu
            setCurrentItem(1);
            endDrag();
        }
        break;
    case MotionEvent.ACTION_CANCEL:
        if (mIsBeingDragged) {
            setCurrentItemInternal(mCurItem, true, true);
            mActivePointerId = INVALID_POINTER;
            endDrag();
        }
        break;
    case MotionEventCompat.ACTION_POINTER_DOWN: {
        final int indexx = MotionEventCompat.getActionIndex(ev);
        mLastMotionX = MotionEventCompat.getX(ev, indexx);
        mActivePointerId = MotionEventCompat.getPointerId(ev, indexx);
        break;
    }
    case MotionEventCompat.ACTION_POINTER_UP:
        onSecondaryPointerUp(ev);
        int pointerIndex = getPointerIndex(ev, mActivePointerId);
        if (mActivePointerId == INVALID_POINTER)
            break;
        mLastMotionX = MotionEventCompat.getX(ev, pointerIndex);
        break;
    }
    return true;
}

From source file:com.mde.potdroid.helpers.ptr.SwipyRefreshLayout.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    ensureTarget();//from w  w  w  .  j  av  a 2  s  .  c  om
    ensureChildContainer();

    final int action = MotionEventCompat.getActionMasked(ev);

    if (mReturningToStart && action == MotionEvent.ACTION_DOWN) {
        mReturningToStart = false;
    }

    switch (mDirection) {
    case BOTTOM:
        if (!isEnabled() || mReturningToStart || (!mBothDirection && canChildScrollDown()) || mRefreshing) {
            // Fail fast if we're not in a state where a swipe is possible
            return false;
        }
        break;
    case TOP:
    default:
        if (!isEnabled() || mReturningToStart || (!mBothDirection && canChildScrollUp()) || mRefreshing) {
            // Fail fast if we're not in a state where a swipe is possible
            return false;
        }
        break;
    }

    switch (action) {
    case MotionEvent.ACTION_DOWN:
        setTargetOffsetTopAndBottom(mOriginalOffsetTop - mCircleView.getTop(), true);
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
        mIsBeingDragged = false;
        final float initialDownY = getMotionEventY(ev, mActivePointerId);
        if (initialDownY == -1) {
            return false;
        }
        mInitialDownY = initialDownY;

    case MotionEvent.ACTION_MOVE:
        if (mActivePointerId == INVALID_POINTER) {
            return false;
        }

        final float y = getMotionEventY(ev, mActivePointerId);
        if (y == -1) {
            return false;
        }
        if (mBothDirection) {
            if (y > mInitialDownY) {
                setRawDirection(SwipyRefreshLayoutDirection.TOP);
            } else if (y < mInitialDownY) {
                setRawDirection(SwipyRefreshLayoutDirection.BOTTOM);
            }
            if ((mDirection == SwipyRefreshLayoutDirection.BOTTOM && canChildScrollDown())
                    || (mDirection == SwipyRefreshLayoutDirection.TOP && canChildScrollUp())) {
                mInitialDownY = y;
                return false;
            }
        }
        float yDiff;
        switch (mDirection) {
        case BOTTOM:
            yDiff = mInitialDownY - y;
            break;
        case TOP:
        default:
            yDiff = y - mInitialDownY;
            break;
        }
        if (yDiff > mTouchSlop && !mIsBeingDragged) {
            switch (mDirection) {
            case BOTTOM:
                mInitialMotionY = mInitialDownY - mTouchSlop;
                break;
            case TOP:
            default:
                mInitialMotionY = mInitialDownY + mTouchSlop;
                break;
            }
            mIsBeingDragged = true;
            mProgress.setAlpha(STARTING_PROGRESS_ALPHA);
        }
        break;

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

    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL:
        mIsBeingDragged = false;
        mActivePointerId = INVALID_POINTER;
        break;
    }

    return mIsBeingDragged;
}