Java Code Examples for androidx.core.view.MotionEventCompat#ACTION_MASK

The following examples show how to use androidx.core.view.MotionEventCompat#ACTION_MASK . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: UnderlinePageIndicator.java    From arcusandroid with Apache License 2.0 4 votes vote down vote up
public boolean onTouchEvent(MotionEvent ev) {
    if (super.onTouchEvent(ev)) {
        return true;
    }
    if ((mViewPager == null) || (mViewPager.getAdapter().getCount() == 0)) {
        return false;
    }

    final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;
    switch (action) {
        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) {
                mLastMotionX = x;
                if (mViewPager.isFakeDragging() || mViewPager.beginFakeDrag()) {
                    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;

                if ((mCurrentPage > 0) && (ev.getX() < halfWidth - sixthWidth)) {
                    if (action != MotionEvent.ACTION_CANCEL) {
                        mViewPager.setCurrentItem(mCurrentPage - 1);
                    }
                    return true;
                } else if ((mCurrentPage < count - 1) && (ev.getX() > halfWidth + sixthWidth)) {
                    if (action != MotionEvent.ACTION_CANCEL) {
                        mViewPager.setCurrentItem(mCurrentPage + 1);
                    }
                    return true;
                }
            }

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

        case MotionEventCompat.ACTION_POINTER_DOWN: {
            final int index = MotionEventCompat.getActionIndex(ev);
            mLastMotionX = MotionEventCompat.getX(ev, index);
            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;
}
 
Example 2
Source File: TitlePageIndicator.java    From arcusandroid with Apache License 2.0 4 votes vote down vote up
public boolean onTouchEvent(android.view.MotionEvent ev) {
    if (super.onTouchEvent(ev)) {
        return true;
    }
    if ((mViewPager == null) || (mViewPager.getAdapter().getCount() == 0)) {
        return false;
    }

    final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;
    switch (action) {
        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) {
                mLastMotionX = x;
                if (mViewPager.isFakeDragging() || mViewPager.beginFakeDrag()) {
                    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) {
                        if (action != MotionEvent.ACTION_CANCEL) {
                            mViewPager.setCurrentItem(mCurrentPage - 1);
                        }
                        return true;
                    }
                } else if (eventX > rightThird) {
                    if (mCurrentPage < count - 1) {
                        if (action != MotionEvent.ACTION_CANCEL) {
                            mViewPager.setCurrentItem(mCurrentPage + 1);
                        }
                        return true;
                    }
                } else {
                    //Middle third
                    if (mCenterItemClickListener != null && action != MotionEvent.ACTION_CANCEL) {
                        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);
            mLastMotionX = MotionEventCompat.getX(ev, index);
            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;
}
 
Example 3
Source File: CirclePageIndicator.java    From arcusandroid with Apache License 2.0 4 votes vote down vote up
public boolean onTouchEvent(android.view.MotionEvent ev) {
    if (super.onTouchEvent(ev)) {
        return true;
    }
    if ((mViewPager == null) || (mViewPager.getAdapter().getCount() == 0)) {
        return false;
    }

    final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;
    switch (action) {
        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) {
                mLastMotionX = x;
                if (mViewPager.isFakeDragging() || mViewPager.beginFakeDrag()) {
                    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;

                if ((mCurrentPage > 0) && (ev.getX() < halfWidth - sixthWidth)) {
                    if (action != MotionEvent.ACTION_CANCEL) {
                        mViewPager.setCurrentItem(mCurrentPage - 1);
                    }
                    return true;
                } else if ((mCurrentPage < count - 1) && (ev.getX() > halfWidth + sixthWidth)) {
                    if (action != MotionEvent.ACTION_CANCEL) {
                        mViewPager.setCurrentItem(mCurrentPage + 1);
                    }
                    return true;
                }
            }

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

        case MotionEventCompat.ACTION_POINTER_DOWN: {
            final int index = MotionEventCompat.getActionIndex(ev);
            mLastMotionX = MotionEventCompat.getX(ev, index);
            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;
}
 
Example 4
Source File: LinePageIndicator.java    From arcusandroid with Apache License 2.0 4 votes vote down vote up
public boolean onTouchEvent(android.view.MotionEvent ev) {
    if (super.onTouchEvent(ev)) {
        return true;
    }
    if ((mViewPager == null) || (mViewPager.getAdapter().getCount() == 0)) {
        return false;
    }

    final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;
    switch (action) {
        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) {
                mLastMotionX = x;
                if (mViewPager.isFakeDragging() || mViewPager.beginFakeDrag()) {
                    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;

                if ((mCurrentPage > 0) && (ev.getX() < halfWidth - sixthWidth)) {
                    if (action != MotionEvent.ACTION_CANCEL) {
                        mViewPager.setCurrentItem(mCurrentPage - 1);
                    }
                    return true;
                } else if ((mCurrentPage < count - 1) && (ev.getX() > halfWidth + sixthWidth)) {
                    if (action != MotionEvent.ACTION_CANCEL) {
                        mViewPager.setCurrentItem(mCurrentPage + 1);
                    }
                    return true;
                }
            }

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

        case MotionEventCompat.ACTION_POINTER_DOWN: {
            final int index = MotionEventCompat.getActionIndex(ev);
            mLastMotionX = MotionEventCompat.getX(ev, index);
            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;
}
 
Example 5
Source File: CirclePageIndicator.java    From SmartFlasher with GNU General Public License v3.0 4 votes vote down vote up
@SuppressLint("ClickableViewAccessibility")
public boolean onTouchEvent(android.view.MotionEvent ev) {
    if (super.onTouchEvent(ev)) {
        return true;
    }
    if ((mViewPager == null) || (Objects.requireNonNull(mViewPager.getAdapter()).getCount() == 0)) {
        return false;
    }

    final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;
    switch (action) {
        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) {
                mLastMotionX = x;
                if (mViewPager.isFakeDragging() || mViewPager.beginFakeDrag()) {
                    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;

                if ((mCurrentPage > 0) && (ev.getX() < halfWidth - sixthWidth)) {
                    if (action != MotionEvent.ACTION_CANCEL) {
                        mViewPager.setCurrentItem(mCurrentPage - 1);
                    }
                    return true;
                } else if ((mCurrentPage < count - 1) && (ev.getX() > halfWidth + sixthWidth)) {
                    if (action != MotionEvent.ACTION_CANCEL) {
                        mViewPager.setCurrentItem(mCurrentPage + 1);
                    }
                    return true;
                }
            }

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

        case MotionEventCompat.ACTION_POINTER_DOWN: {
            final int index = MotionEventCompat.getActionIndex(ev);
            mLastMotionX = MotionEventCompat.getX(ev, index);
            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;
}
 
Example 6
Source File: CirclePageIndicator.java    From SmartPack-Kernel-Manager with GNU General Public License v3.0 4 votes vote down vote up
@SuppressLint("ClickableViewAccessibility")
public boolean onTouchEvent(android.view.MotionEvent ev) {
    if (super.onTouchEvent(ev)) {
        return true;
    }
    if ((mViewPager == null) || (Objects.requireNonNull(mViewPager.getAdapter()).getCount() == 0)) {
        return false;
    }

    final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;
    switch (action) {
        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) {
                mLastMotionX = x;
                if (mViewPager.isFakeDragging() || mViewPager.beginFakeDrag()) {
                    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;

                if ((mCurrentPage > 0) && (ev.getX() < halfWidth - sixthWidth)) {
                    if (action != MotionEvent.ACTION_CANCEL) {
                        mViewPager.setCurrentItem(mCurrentPage - 1);
                    }
                    return true;
                } else if ((mCurrentPage < count - 1) && (ev.getX() > halfWidth + sixthWidth)) {
                    if (action != MotionEvent.ACTION_CANCEL) {
                        mViewPager.setCurrentItem(mCurrentPage + 1);
                    }
                    return true;
                }
            }

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

        case MotionEventCompat.ACTION_POINTER_DOWN: {
            final int index = MotionEventCompat.getActionIndex(ev);
            mLastMotionX = MotionEventCompat.getX(ev, index);
            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;
}
 
Example 7
Source File: CirclePageIndicator.java    From MTweaks-KernelAdiutorMOD with GNU General Public License v3.0 4 votes vote down vote up
@Override
public boolean onTouchEvent(android.view.MotionEvent ev) {
    if (super.onTouchEvent(ev)) {
        return true;
    }
    if ((mViewPager == null) || (mViewPager.getAdapter().getCount() == 0)) {
        return false;
    }

    final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;
    switch (action) {
        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) {
                mLastMotionX = x;
                if (mViewPager.isFakeDragging() || mViewPager.beginFakeDrag()) {
                    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;

                if ((mCurrentPage > 0) && (ev.getX() < halfWidth - sixthWidth)) {
                    if (action != MotionEvent.ACTION_CANCEL) {
                        mViewPager.setCurrentItem(mCurrentPage - 1);
                    }
                    return true;
                } else if ((mCurrentPage < count - 1) && (ev.getX() > halfWidth + sixthWidth)) {
                    if (action != MotionEvent.ACTION_CANCEL) {
                        mViewPager.setCurrentItem(mCurrentPage + 1);
                    }
                    return true;
                }
            }

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

        case MotionEventCompat.ACTION_POINTER_DOWN: {
            final int index = MotionEventCompat.getActionIndex(ev);
            mLastMotionX = MotionEventCompat.getX(ev, index);
            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;
}
 
Example 8
Source File: CirclePageIndicator.java    From Kore with Apache License 2.0 4 votes vote down vote up
public boolean onTouchEvent(android.view.MotionEvent ev) {
    if (super.onTouchEvent(ev)) {
        return true;
    }
    if ((mViewPager == null) || (mViewPager.getAdapter().getCount() == 0)) {
        return false;
    }

    final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;
    switch (action) {
        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) {
                mLastMotionX = x;
                if (mViewPager.isFakeDragging() || mViewPager.beginFakeDrag()) {
                    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;

                if ((mCurrentPage > 0) && (ev.getX() < halfWidth - sixthWidth)) {
                    if (action != MotionEvent.ACTION_CANCEL) {
                        mViewPager.setCurrentItem(mCurrentPage - 1);
                    }
                    return true;
                } else if ((mCurrentPage < count - 1) && (ev.getX() > halfWidth + sixthWidth)) {
                    if (action != MotionEvent.ACTION_CANCEL) {
                        mViewPager.setCurrentItem(mCurrentPage + 1);
                    }
                    return true;
                }
            }

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

        case MotionEventCompat.ACTION_POINTER_DOWN: {
            final int index = MotionEventCompat.getActionIndex(ev);
            mLastMotionX = MotionEventCompat.getX(ev, index);
            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;
}