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

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

  1. HOME
  2. Java
  3. android
  4. android.support.v4.view.*
  5. MotionEventCompat
  6. getActionIndex

Introduction

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

Prototype

public static int getActionIndex(MotionEvent event)

Source Link

Document

Call MotionEvent#getAction , returning only the pointer index portion

Usage

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

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

    mViewWidth = mSwipeListView.getWidth();

    switch (motionEvent.getAction()) {
    case MotionEvent.ACTION_DOWN: {
        return actionDown(view, motionEvent);
    }

    case MotionEvent.ACTION_UP: {
        actionUp(motionEvent);
    }

    case MotionEvent.ACTION_MOVE: {
        if (mVelocityTracker == null || mPaused || mDownPosition == ListView.INVALID_POSITION) {
            break;
        }

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

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

        int swipeMode = mSwipeMode;
        int changeSwipeMode = mSwipeListView.changeSwipeMode(mDownPosition);
        if (changeSwipeMode >= 0) {
            swipeMode = changeSwipeMode;
        }

        if (swipeMode == SwipeListView.SWIPE_MODE_NONE) {
            deltaMode = 0;
        } else if (swipeMode != SwipeListView.SWIPE_MODE_BOTH) {
            if (mOpened.get(mDownPosition)) {
                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 > mSlop && mSwipeCurrentAction == SwipeListView.SWIPE_ACTION_NONE
                && velocityY < velocityX) {
            mSwiping = true;
            boolean swipingRight = (deltaX > 0);
            if (mOpened.get(mDownPosition)) {
                mSwipeListView.onStartClose(mDownPosition, swipingRight);
                mSwipeCurrentAction = SwipeListView.SWIPE_ACTION_REVEAL;
            } else {
                if (swipingRight && mSwipeActionRight == SwipeListView.SWIPE_ACTION_DISMISS) {
                    mSwipeCurrentAction = SwipeListView.SWIPE_ACTION_DISMISS;
                } else if (!swipingRight && mSwipeActionLeft == SwipeListView.SWIPE_ACTION_DISMISS) {
                    mSwipeCurrentAction = SwipeListView.SWIPE_ACTION_DISMISS;
                } else if (swipingRight && mSwipeActionRight == SwipeListView.SWIPE_ACTION_CHECK) {
                    mSwipeCurrentAction = SwipeListView.SWIPE_ACTION_CHECK;
                } else if (!swipingRight && mSwipeActionLeft == SwipeListView.SWIPE_ACTION_CHECK) {
                    mSwipeCurrentAction = SwipeListView.SWIPE_ACTION_CHECK;
                } else {
                    mSwipeCurrentAction = SwipeListView.SWIPE_ACTION_REVEAL;
                }
                mSwipeListView.onStartOpen(mDownPosition, mSwipeCurrentAction, swipingRight);
            }
            mSwipeListView.requestDisallowInterceptTouchEvent(true);
            MotionEvent cancelEvent = MotionEvent.obtain(motionEvent);
            cancelEvent.setAction(MotionEvent.ACTION_CANCEL | (MotionEventCompat
                    .getActionIndex(motionEvent) << MotionEventCompat.ACTION_POINTER_INDEX_SHIFT));
            mSwipeListView.onTouchEvent(cancelEvent);
        }

        if (mSwiping) {
            if (mOpened.get(mDownPosition)) {
                deltaX += mOpenedRight.get(mDownPosition) ? mViewWidth - mRightOffset
                        : -mViewWidth + mLeftOffset;
            }
            move(deltaX);
            return true;
        }
        break;
    }
    }
    return false;
}

From source file:com.ljmob.corner.view.SwipeRefreshLayoutOverlay.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 a2s  .  c  om*/
    }

    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:
        mLastMotionY = mInitialMotionY = ev.getY();
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
        mIsBeingDragged = false;
        mCurrPercentage = 0;
        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;

        if (!mIsBeingDragged && yDiff > mTouchSlop) {
            mIsBeingDragged = true;
        }

        if (mIsBeingDragged) {
            // User velocity passed min velocity; trigger a refresh
            if (yDiff > mDistanceToTriggerSync) {
                // User movement passed distance; trigger a refresh
                startRefresh();
            } else {
                // Just track the user's movement
                setTriggerPercentage(mAccelerateInterpolator.getInterpolation(yDiff / mDistanceToTriggerSync));
                updateContentOffsetTop((int) (yDiff));
                if (mLastMotionY > y && 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);
                } else {
                    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;
        return false;
    }

    return true;
}

From source file:de.timroes.swipetodismiss.SwipeDismissList.java

@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
    if (mViewWidth < 2) {
        mViewWidth = mListView.getWidth();
    }//  w w  w  .  j  a  v a 2  s .  co  m

    switch (MotionEventCompat.getActionMasked(motionEvent)) {
    case MotionEvent.ACTION_DOWN: {
        if (mPaused || !mEnabled) {
            return false;
        }
        resetSwipeState();

        // TODO: ensure this is a finger, and set a flag

        // Find the child view that was touched (perform a hit test)
        Rect rect = new Rect();
        int childCount = mListView.getChildCount();
        int[] listViewCoords = new int[2];
        mListView.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 = mListView.getChildAt(i);
            child.getHitRect(rect);
            if (rect.contains(x, y)) {
                if (mSwipeLayout != 0) {
                    View swipeView = child.findViewById(mSwipeLayout);
                    if (swipeView != null) {
                        mDownView = swipeView;
                        break;
                    }
                }
                mDownView = child;
                break;
            }
        }

        if (mDownView != null) {
            mDownX = motionEvent.getRawX();
            mDownY = motionEvent.getRawY();
            mDownPosition = mListView.getPositionForView(mDownView);

            mVelocityTracker = VelocityTracker.obtain();
            mVelocityTracker.addMovement(motionEvent);
        }
        view.onTouchEvent(motionEvent);
        return true;
    }

    case MotionEvent.ACTION_UP: {
        if (mVelocityTracker == null) {
            break;
        }

        float deltaX = motionEvent.getRawX() - mDownX;
        mVelocityTracker.addMovement(motionEvent);
        mVelocityTracker.computeCurrentVelocity(1000);
        float velocityX = Math.abs(mVelocityTracker.getXVelocity());
        float velocityY = Math.abs(mVelocityTracker.getYVelocity());
        boolean dismiss = false;
        boolean dismissRight = false;
        if (Math.abs(deltaX) > mViewWidth / 2 && mSwiping) {
            dismiss = true;
            dismissRight = deltaX > 0;
        } else if (mMinFlingVelocity <= velocityX && velocityX <= mMaxFlingVelocity && velocityY < velocityX
                && mSwiping && isDirectionValid(mVelocityTracker.getXVelocity())
                && deltaX >= mViewWidth * 0.2f) {
            dismiss = true;
            dismissRight = mVelocityTracker.getXVelocity() > 0;
        }
        if (dismiss) {
            // dismiss
            final View downView = mDownView; // mDownView gets null'd before animation ends
            final int downPosition = mDownPosition;
            ++mDismissAnimationRefCount;
            mPaused = true;
            animate(mDownView).translationX(dismissRight ? mViewWidth : -mViewWidth).alpha(0)
                    .setDuration(mAnimationTime).setListener(new AnimatorListenerAdapter() {
                        @Override
                        public void onAnimationEnd(Animator animation) {
                            performDismiss(downView, downPosition);
                        }
                    });
        } else {
            // cancel
            animate(mDownView).translationX(0).alpha(1).setDuration(mAnimationTime).setListener(null);
        }
        resetSwipeState();
        break;
    }

    case MotionEvent.ACTION_MOVE: {

        if (mUndoPopup.isShowing()) {
            // Send a delayed message to hide popup
            mHandler.sendMessageDelayed(mHandler.obtainMessage(mDelayedMsgId), mAutoHideDelay);
        }

        if (mVelocityTracker == null || mPaused || !mEnabled) {
            break;
        }

        mVelocityTracker.addMovement(motionEvent);
        float deltaX = motionEvent.getRawX() - mDownX;
        float deltaY = motionEvent.getRawY() - mDownY;
        // Only start swipe in correct direction
        if (isDirectionValid(deltaX)) {
            if (Math.abs(deltaX) > mSlop && Math.abs(deltaX) > Math.abs(deltaY)) {
                mSwiping = true;
                mListView.requestDisallowInterceptTouchEvent(true);

                // Cancel ListView's touch (un-highlighting the item)
                MotionEvent cancelEvent = MotionEvent.obtain(motionEvent);
                cancelEvent.setAction(MotionEvent.ACTION_CANCEL | (MotionEventCompat
                        .getActionIndex(motionEvent) << MotionEvent.ACTION_POINTER_INDEX_SHIFT));
                mListView.onTouchEvent(cancelEvent);
                cancelEvent.recycle();
            }
        } else {
            // If we swiped into wrong direction, act like this was the new
            // touch down point
            mDownX = motionEvent.getRawX();
            deltaX = 0;
        }

        if (mSwiping) {
            setTranslationX(mDownView, deltaX);
            setAlpha(mDownView, Math.max(0f, Math.min(1f, 1f - 2f * Math.abs(deltaX) / mViewWidth)));
            return true;
        }
        break;
    }
    }
    return false;
}

From source file:com.linsq.androiddemo.refresh2.SwipeRefreshLayout.java

private void onSecondaryPointerUp(MotionEvent ev) {
    // ?ACTION_UP?
    final int pointerIndex = MotionEventCompat.getActionIndex(ev);// ????
    final int pointerId = MotionEventCompat.getPointerId(ev, pointerIndex);// ????
    if (pointerId == mActivePointerId) {
        // ==ACTION_DOWN?
        final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
        mLastMotionY = MotionEventCompat.getY(ev, newPointerIndex);
        mActivePointerId = MotionEventCompat.getPointerId(ev, newPointerIndex);
    }//from   w  w w.  ja va  2  s .  c o m
}

From source file:com.ymsfd.practices.ui.widget.SwipeRefreshLayout.java

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

    if (mReturningToStart && action == MotionEvent.ACTION_DOWN) {
        mReturningToStart = false;/*from  www .j  a  v  a2 s.co  m*/
    }

    D("Touch Event " + action + " Active Pointer Id->" + mActivePointerId);

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

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

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

        final float y = ev.getY(pointerIndex);
        startDragging(y);

        if (mIsBeingDragged) {
            final float overScrollTop = (y - mInitialMotionY) * DRAG_RATE;
            if (overScrollTop > 0) {
                moveSpinner(overScrollTop);
            } else {
                return false;
            }
        }
        break;
    }

    case MotionEventCompat.ACTION_POINTER_DOWN: {
        pointerIndex = MotionEventCompat.getActionIndex(ev);
        if (pointerIndex < 0) {
            Log.e(LOG_TAG, "Got ACTION_POINTER_DOWN event but have an invalid action index.");
            return false;
        }
        mActivePointerId = ev.getPointerId(pointerIndex);
        break;
    }

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

    case MotionEvent.ACTION_UP: {
        pointerIndex = ev.findPointerIndex(mActivePointerId);
        if (pointerIndex < 0) {
            Log.e(LOG_TAG, "Got ACTION_UP event but don't have an active pointer id.");
            return false;
        }

        if (mIsBeingDragged) {
            final float y = ev.getY(pointerIndex);
            final float overScrollTop = (y - mInitialMotionY) * DRAG_RATE;
            mIsBeingDragged = false;
            finishSpinner(overScrollTop);
        }
        mActivePointerId = INVALID_POINTER;
        return false;
    }
    case MotionEvent.ACTION_CANCEL:
        return false;
    }

    return true;
}

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

public boolean shouldInterceptTouchEvent(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();/*from  w  ww. j  a va 2 s .c  o 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);
        saveInitialMotion(x, y, pointerId);

        final View toCapture = findTopChildUnder((int) x, (int) y);

        // Catch a settling view if possible.
        if (toCapture == mCapturedView && mDragState == STATE_SETTLING) {
            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) {
            final int edgesTouched = mInitialEdgesTouched[pointerId];
            if ((edgesTouched & mTrackingEdges) != 0) {
                mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
            }
        } else if (mDragState == STATE_SETTLING) {
            // Catch a settling view if possible.
            final View toCapture = findTopChildUnder((int) x, (int) y);
            if (toCapture == mCapturedView) {
                tryCaptureViewForDrag(toCapture, pointerId);
            }
        }
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        // First to cross a touch slop over a draggable view wins. Also report edge drags.
        final int pointerCount = MotionEventCompat.getPointerCount(ev);
        for (int i = 0; i < pointerCount && mInitialMotionX != null && mInitialMotionY != null; i++) {
            final int pointerId = MotionEventCompat.getPointerId(ev, i);
            if (pointerId >= mInitialMotionX.length || pointerId >= mInitialMotionY.length) {
                continue;
            }
            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 (toCapture != null && checkTouchSlop(toCapture, dx, dy)
                    && tryCaptureViewForDrag(toCapture, pointerId)) {
                break;
            }
        }
        saveLastMotion(ev);
        break;
    }

    case MotionEventCompat.ACTION_POINTER_UP: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        clearMotionHistory(pointerId);
        break;
    }

    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL: {
        cancel();
        break;
    }
    }

    return mDragState == STATE_DRAGGING;
}

From source file:com.bluepixel.android.sgpool.ui.widget.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  av  a 2 s  .  c  o  m
}

From source file:de.uni_weimar.mheinz.androidtouchscope.display.ScopeView.java

private boolean touchSelectPath(MotionEvent event) {
    final int pointerIndex = MotionEventCompat.getActionIndex(event);
    final float x = MotionEventCompat.getX(event, pointerIndex);
    final float y = MotionEventCompat.getY(event, pointerIndex);

    int hit = pathHitTest(x, y, 15f);
    if (hit == -1 && mSelectedPath == -1)
        return false;

    if (mSelectedPath == hit)
        mSelectedPath = -1;/*from w w w .j a  v  a  2  s  .  c  o  m*/
    else
        mSelectedPath = hit;

    /*   mDrawableChan1.getPaint().clearShadowLayer();
       mDrawableChan1.getPaint().setStrokeWidth(1);
       mDrawableChan2.getPaint().clearShadowLayer();
       mDrawableChan2.getPaint().setStrokeWidth(1);
            
       switch(mSelectedPath)
       {
    case 1:
        mDrawableChan1.getPaint().setShadowLayer(10f,0f,0f,HostView.CHAN1_COLOR);
        mDrawableChan1.getPaint().setStrokeWidth(1.5f);
        break;
    case 2:
        mDrawableChan2.getPaint().setShadowLayer(10f,0f,0f,HostView.CHAN2_COLOR);
        mDrawableChan2.getPaint().setStrokeWidth(1.5f);
        break;
    default:
        break;
       }*/
    return true;
}

From source file:io.amira.zen.layout.slider.ZenViewAbove.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {

    if (!mEnabled)
        return false;

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

    if (DEBUG)//from w  w  w . ja  v  a  2 s.com
        if (action == MotionEvent.ACTION_DOWN)
            ZenApplication.log.v("Received ACTION_DOWN");

    if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP
            || (action != MotionEvent.ACTION_DOWN && mIsUnableToDrag)) {
        endDrag();
        return false;
    }

    switch (action) {
    case MotionEvent.ACTION_MOVE:
        determineDrag(ev);
        break;
    case MotionEvent.ACTION_DOWN:
        int index = MotionEventCompat.getActionIndex(ev);
        mActivePointerId = MotionEventCompat.getPointerId(ev, index);
        if (mActivePointerId == INVALID_POINTER)
            break;
        mLastMotionX = mInitialMotionX = MotionEventCompat.getX(ev, index);
        mLastMotionY = MotionEventCompat.getY(ev, index);
        if (thisTouchAllowed(ev)) {
            mIsBeingDragged = false;
            mIsUnableToDrag = false;
            if (isMenuOpen() && mViewBehind.menuTouchInQuickReturn(mContent, mCurItem, ev.getX() + mScrollX)) {
                mQuickReturn = true;
            }
        } else {
            mIsUnableToDrag = true;
        }
        break;
    case MotionEventCompat.ACTION_POINTER_UP:
        onSecondaryPointerUp(ev);
        break;
    }

    if (!mIsBeingDragged) {
        if (mVelocityTracker == null) {
            mVelocityTracker = VelocityTracker.obtain();
        }
        mVelocityTracker.addMovement(ev);
    }
    return mIsBeingDragged || mQuickReturn;
}

From source file:at.ac.uniklu.mobile.sportal.ui.viewpagerindicator.TitlePageIndicator.java

public boolean onTouchEvent(android.view.MotionEvent ev) {
    if ((mViewPager == null) || (mViewPager.getAdapter().getCount() == 0)) {
        return false;
    }/*from www . j a  v a2  s. co  m*/

    final int action = ev.getAction();

    switch (action & MotionEventCompat.ACTION_MASK) {
    case MotionEvent.ACTION_DOWN:
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
        mLastMotionX = ev.getX();
        break;

    case MotionEvent.ACTION_MOVE: {
        final int activePointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
        final float x = MotionEventCompat.getX(ev, activePointerIndex);
        final float deltaX = x - mLastMotionX;

        if (!mIsDragging) {
            if (Math.abs(deltaX) > mTouchSlop) {
                mIsDragging = true;
            }
        }

        if (mIsDragging) {
            if (!mViewPager.isFakeDragging()) {
                mViewPager.beginFakeDrag();
            }

            mLastMotionX = x;

            mViewPager.fakeDragBy(deltaX);
        }

        break;
    }

    case MotionEvent.ACTION_CANCEL:
    case MotionEvent.ACTION_UP:
        if (!mIsDragging) {
            final int count = mViewPager.getAdapter().getCount();
            final int width = getWidth();
            final float halfWidth = width / 2f;
            final float sixthWidth = width / 6f;
            final float leftThird = halfWidth - sixthWidth;
            final float rightThird = halfWidth + sixthWidth;
            final float eventX = ev.getX();

            if (eventX < leftThird) {
                if (mCurrentPage > 0) {
                    mViewPager.setCurrentItem(mCurrentPage - 1);
                    return true;
                }
            } else if (eventX > rightThird) {
                if (mCurrentPage < count - 1) {
                    mViewPager.setCurrentItem(mCurrentPage + 1);
                    return true;
                }
            } else {
                //Middle third
                if (mCenterItemClickListener != null) {
                    mCenterItemClickListener.onCenterItemClick(mCurrentPage);
                }
            }
        }

        mIsDragging = false;
        mActivePointerId = INVALID_POINTER;
        if (mViewPager.isFakeDragging())
            mViewPager.endFakeDrag();
        break;

    case MotionEventCompat.ACTION_POINTER_DOWN: {
        final int index = MotionEventCompat.getActionIndex(ev);
        final float x = MotionEventCompat.getX(ev, index);
        mLastMotionX = x;
        mActivePointerId = MotionEventCompat.getPointerId(ev, index);
        break;
    }

    case MotionEventCompat.ACTION_POINTER_UP:
        final int pointerIndex = MotionEventCompat.getActionIndex(ev);
        final int pointerId = MotionEventCompat.getPointerId(ev, pointerIndex);
        if (pointerId == mActivePointerId) {
            final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
            mActivePointerId = MotionEventCompat.getPointerId(ev, newPointerIndex);
        }
        mLastMotionX = MotionEventCompat.getX(ev, MotionEventCompat.findPointerIndex(ev, mActivePointerId));
        break;
    }

    return true;
}