@Override
public final boolean onTouch(View v, MotionEvent ev) {
boolean handled = false;
if (isZoomEnabled) {
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
// First, disable the Parent from intercepting the touch
// event
if (v.getParent() != null) {
v.getParent().requestDisallowInterceptTouchEvent(true);
}
// If we're flinging, and the user presses down, cancel
// fling
if (currentFlingRunnable != null) {
currentFlingRunnable.cancelFling();
currentFlingRunnable = null;
}
break;
case MotionEvent.ACTION_CANCEL:
case MotionEvent.ACTION_UP:
// If the user has zoomed less than min scale, zoom back
// to min scale
if (getScale() < minScale) {
RectF rect = getDisplayRect();
if (null != rect) {
v.post(
new AnimatedZoomRunnable(getScale(), minScale, rect.centerX(), rect.centerY()));
handled = true;
}
}
break;
}
// Finally, try the scale/drag/tap detector
if ((multiGestureDetector != null) && multiGestureDetector.onTouchEvent(ev)) {
handled = true;
}
}
return handled;
}
private void cancelFling() {
if (null != mCurrentFlingRunnable) {
mCurrentFlingRunnable.cancelFling();
mCurrentFlingRunnable = null;
}
}
private void cancelFling() {
if (mCurrentFlingRunnable != null) {
mCurrentFlingRunnable.cancelFling();
mCurrentFlingRunnable = null;
}
}
