ItemizedOverlay onTap setText

puppetmaster · by **puppetmaster** » Mon Feb 16, 2009 5:06 pm

Hallo anddev community,

at first: thx for your nice communication plattform about android. And now in my first topic i allready have a question. I try to change the text from a TextView if the onTap() method from the Class ItemizedOverlay is called. Unfortunately that trows out an exception. Here you got my code-snippet

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Using java Syntax Highlighting

 
        public boolean onTap(GeoPoint p, MapView mv) {
 
        OverlayItem overlayitem = new OverlayItem(p, "", "");
 
        addOverlay(overlayitem);
 
        TextView tv = (TextView) mv.findViewById(R.id.tv_WhereIAm);
 
        CharSequence cs = (CharSequence) new String("put some text in here");
 
        try {
 
            tv.setText(cs);
 
            Log.i("info", "OK!");
 
        } catch (Exception e){
 
                Log.i("info", "Damn it");
 
        }
 
                return super.onTap(p, mv);
 
        }       
 
Parsed in 0.031 seconds,  using GeSHi 1.0.8.4

The rest of the programm ist nearly simular to this example http://developer.android.com/guide/tuto ... pview.html . Perhaps the class havent the right to change the TextView? (was that a stupid thought?)

Can anybody tell me what i am doing wrong? Thanks a lot for every kind of help!

puppetmaster · by **puppetmaster** » Mon Feb 16, 2009 6:50 pm

finaly i got it!

I have to override the ItemizedOverlay constructor in myItemizedOverlay class and set a private variable for the MapActivity which has called the extended ItemizedOverlay class. If i call that class from the MapActivity i have to call it like this : itemizedOverlay = new myItemizedOverlay(this, drawable); very simple and sure a novice tipp :-)

sorry for badger you!

ItemizedOverlay onTap setText

ItemizedOverlay onTap setText

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