private boolean onTouchMove(MotionEvent event) {
switch (mState) {
case FLING:
case BOUNCE:
case WAITING_LISTENERS:
// should never happen
Log.e(LOGTAG, "Received impossible touch move while in " + mState);
// fall through
case ANIMATED_ZOOM:
case NOTHING:
// may happen if user double-taps and drags without lifting after the
// second tap. ignore the move if this happens.
return false;
case TOUCHING:
if (panDistance(event) < PAN_THRESHOLD) {
return false;
}
cancelTouch();
startPanning(event.getX(0), event.getY(0), event.getEventTime());
track(event);
return true;
case PANNING_HOLD_LOCKED:
setState(PanZoomState.PANNING_LOCKED);
// fall through
case PANNING_LOCKED:
track(event);
return true;
case PANNING_HOLD:
setState(PanZoomState.PANNING);
// fall through
case PANNING:
track(event);
return true;
case PINCHING:
// scale gesture listener will handle this
return false;
}
Log.e(LOGTAG, "Unhandled case " + mState + " in onTouchMove");
return false;
}
