Hmmm, I just added this functionality to my own project and it works
like a charm.
Let's see. To get this going you need a few things. The class that
will receive your callback must implement the
GestureDetector.OnDoubleTapListener interface, for which it must
include implementations of onSingleTapConfirmed(), onDoubleTap(), and
onDoubleTapEvent(). In addition, I generally include as a member of
that class a GestureDetector object (I frequently include and use
OnGestureListener as well but I don't think that's relevant to this
discussion). Then, you must register your interest in the associated
callbacks, somewhere around the time of onCreate(), via some code like
this:
mGestureDetector = new GestureDetector(this);
mGestureDetector.setOnDoubleTapListener(this);
That should get it going. One other thing I did was override
dispatchTouchEvent(), at the end of which I call:
return mGestureDetector.onTouchEvent(event);
...but I'm not at all sure you *need* to do this to get double taps
rolling. I was using dispatchTouchEvent() for some other things.
On Jun 12, 9:59 am, Georgy <[email protected]> wrote:
> still it doesn't get the double taps...
>
> On Jun 12, 12:57 pm, Keith Wiley <[email protected]> wrote:
>
> > If I'm understanding you correctly, you *named* your handler method
> > "setOnDoubleTapListener()". That's not right. That's the callback
> > setup method you call, passing it the object that you want called back
> > to in the event of a double tap. The callback method is then some
> > other name. In your case, I found the following:
>
> >http://developer.android.com/reference/android/view/GestureDetector.O...
>
> > which suggests you need to write a method with the following
> > signature:
>
> > boolean onDoubleTap(MotionEvent e);
>
> > On Jun 12, 9:08 am, Georgy <[email protected]> wrote:
>
> > > Hello,
>
> > > I was able to listen to user touches or taps on the screen in a
> > > MapView and trigger a dialog giving the user some feedback. I need to
> > > implement the same concept but with double tap to trigger another
> > > dialog.
>
> > > I looked around and couldn't find much... I wrote this function:
>
> > > public void setOnDoubleTapListener(MotionEvent event, MapView
> > > mapView)
> > > {
> > > if (event.getAction() == MotionEvent.ACTION_UP) {
>
> > > Dialog dialog1 = new
> > > Dialog(HelloMapView2.this);
> > > dialog1.setTitle("Current Location");
> > > dialog1.setContentView(R.layout.custom);
> > > TextView current_locode = (TextView)
> > > dialog1.findViewById
> > > (R.id.text);
> > > current_locode.setText("Current LoCode:
> > > ....");
> > > dialog1.show();
>
> > > }
>
> > > but the compiler never goes through it when I double tap.
>
> > > any ideas?
> > > thanks
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