Problem with onTouchEvent

tabaprdh · by **tabaprdh** » Fri Dec 26, 2008 12:00 pm

hi androidfans,

i hope someone can help me!

i have a map and want to get the geopoint by touching a location in the map,
but the problem is not the calculation, i can get the geopoint by touching the map,
but the problem is i cant move the map, because when i touch it , the listener is fired, so i want to zoom and move too before getting the geopoint , is that possible in android??

regards
tabaprdh

mortefer · by **mortefer** » Fri Dec 26, 2008 12:24 pm

Have you tried limiting your listener to fire only for certain events, like i.e. try add the following so that listener reacts only to touch events (not move or anything)

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Using java Syntax Highlighting

 
if(e.getAction() == MotionEvent.ACTION_DOWN) {
 
    //you code here
 
    return true; //event was handled
 
} else {
 
    return false; //event was NOT handled
 
}
 
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tabaprdh · by **tabaprdh** » Fri Dec 26, 2008 1:07 pm

hi thanks for your adice,

im now a step further, i can touch the zoom controls without starting the listener, but moving the map doesnt work, the listener start by moving and touching

tabaprdh · by **tabaprdh** » Fri Dec 26, 2008 3:30 pm

Problem solved!

mortefer · by **mortefer** » Fri Dec 26, 2008 5:11 pm

c'mon share the solution

yorgosg · by **yorgosg** » Wed Jun 24, 2009 5:19 pm

has anyone found this out? I mean seriously, if you have the time to post "problem solved" you might as well post the solution....

WarrenFaith · by **WarrenFaith** » Thu Jun 25, 2009 3:43 pm

You should check if the MotionEvent is a move or a click.
Sample:

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Using java Syntax Highlighting

if (event.getAction() == MotionEvent.ACTION_DOWN) {
 
    //
 
} else if (event.getAction() == MotionEvent.ACTION_MOVE) {
 
    //
 
} else if (event.getAction() == MotionEvent.ACTION_UP) {
 
    //
 
}
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kec6227 · by **kec6227** » Tue Jul 28, 2009 7:35 pm

Instead of that, I just called map.onTouchEvent(event) after my processing. See Code:

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        map.setOnTouchListener(new OnTouchListener() {
 
            public boolean onTouch(View v, MotionEvent event) {
 
                int x = (int)(event.getRawX() * event.getXPrecision() * 1E6);
 
                int y = (int)(event.getRawY() * event.getYPrecision() * 1E6);
 
                Projection proj = map.getProjection();
 
                GeoPoint loc = proj.fromPixels(x, y);
 
                TextView tv = (TextView)findViewById(R.id.point);
 
                tv.setText(new Integer(map.getOverlays().size()).toString());
 
                if(mark) {
 
                    addMarker(loc);
 
                    v.invalidate();
 
                }
 
                map.onTouchEvent(event);
 
                mark = false;
 
                return true;
 
            }
 
        });
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My only problem is that the GeoPoints I get are not accurate :-\

loudo · by **loudo** » Mon Oct 26, 2009 12:04 pm

Hello
Does it work for you ? because for me the event is triggered just on time. the other click on the map are not fired.

Problem with onTouchEvent

Problem with onTouchEvent

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