@Override
public boolean onTouchEvent(MotionEvent event) {
mScaleGestureDetector.onTouchEvent(event);
if (!mScaling) mGestureDetector.onTouchEvent(event);
if (event.getActionMasked() == MotionEvent.ACTION_DOWN) {
mUserInteracting = true;
}
if (event.getActionMasked() == MotionEvent.ACTION_UP) {
mScrollDisabled = false;
mUserInteracting = false;
View v = mChildViews.get(mCurrent);
if (v != null) {
if (mScroller.isFinished()) {
// If, at the end of user interaction, there is no
// current inertial scroll in operation then animate
// the view onto screen if necessary
slideViewOntoScreen(v);
}
if (mScroller.isFinished()) {
// If still there is no inertial scroll in operation
// then the layout is stable
postSettle(v);
}
}
}
requestLayout();
return true;
}
public void run() {
if (!mScroller.isFinished()) {
mScroller.computeScrollOffset();
int x = mScroller.getCurrX();
int y = mScroller.getCurrY();
mXScroll += x - mScrollerLastX;
mYScroll += y - mScrollerLastY;
mScrollerLastX = x;
mScrollerLastY = y;
requestLayout();
post(this);
} else if (!mUserInteracting) {
// End of an inertial scroll and the user is not interacting.
// The layout is stable
View v = mChildViews.get(mCurrent);
if (v != null) postSettle(v);
}
}