Have you tried using MotionEvent.ACTION_CANCEL in the double-tap listener? GestureDetector has code to reset its internal state in response to this:
https://github.com/android/platform_frameworks_base/blob/master/core/java/android/view/GestureDetector.java#L594 I'm thinking you'd need post a handler message to self to get out of the current stack state when onDoubleTap is called, and then in response to that message, use ACTION_CANCEL to reset the gesture listener and then start the activity. -- Kostya 20 января 2012 г. 17:37 пользователь skink <[email protected]> написал: > hi, > > i'm using GestureDetector to detect double tup actions and having a > little problem when trying to startActivity() inside onDoubleTap > listener. > > namely i have observed when onDoubleTap is empty i see the following: > > D/GestureActivity( 987): onTouchEvent action=0 > D/GestureActivity( 987): onTouchEvent action=1 > D/GestureActivity( 987): onTouchEvent action=0 > D/GestureActivity( 987): onDoubleTap > D/GestureActivity( 987): onTouchEvent action=1 > > here action == 0 for ACTION_DOWN, while action == 1 for ACTION_UP > > as you can see onDoubleTap is being called after second tups's > ACTION_DOWN and before its ACTION_UP, strange but OK > > but when i call startActivity() in onDoubleTap listener i see: > > D/GestureActivity( 1019): onTouchEvent action=0 > D/GestureActivity( 1019): onTouchEvent action=1 > D/GestureActivity( 1019): onTouchEvent action=0 > D/GestureActivity( 1019): onDoubleTap > D/GestureActivity( 1019): onPause > > as you can see there is missing second ACTION_UP (i think it's because > my main activity is paused and doesn't handle touch events) and when i > return back to my main activity GestureDetector is somehow mislead and > behaves a bit strange > > in the end i used onDoubleTapEvent (instead of onDoubleTap) like this: > public boolean onDoubleTapEvent(MotionEvent e) { > if (e.getAction() == MotionEvent.ACTION_UP) { > // start activity here > } > } > > and it works OK but i'm still not sure if it's a good solution > > any ideas how to use onDoubleTap in my scenario? > > pskink > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
