Do "adb shell cat /data/anr/traces.txt" to see what your app was busy doing
at that point. This is the very first step you need to take: understand
what your app is doing that is causing the ANR.
The next step I would take from that, if it is not enough to solve the
problem, is profile your app.
Note that the ANR dialog happens after your application has been
unresponsive for 5 seconds. This is a heck of a long time.
On Mon, Jun 27, 2011 at 7:32 AM, Boozel <boozelcl...@gmail.com> wrote:
> Hi i'm trying to draw an overlay onto a google map but i sometimes get an
> ANR "Reason: keyDispatchingTimedOut ".
> Can any one tell me what the best structure is to do the drawing and
> prevent this?
> My code is below. Thanks in advance for any help
>
> public class MyMap extends MapActivity {
> /** Called when the activity is first created. */
> DBHelper dbhelp;
> final String TAG = "SignalSpot";
> String [][]rows;
> MapView mapView;
> Paint mPaint;
> Handler serviceHandler;
> RunTask rt;
> MyLocationOverlay myLocationOverlay;
> @Override
> public void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
> setContentView(R.layout.map);
>
> dbhelp = new DBHelper(this);
>
> refreshHeatmapData();
> //TODO periodically refresh heatmap
>
> mapView = (MapView) findViewById(R.id.mapview);
> mapView.setBuiltInZoomControls(true);
>
> myLocationOverlay = new MyLocationOverlay(this, mapView);
> mapView.getOverlays().add(myLocationOverlay);
>
> serviceHandler = new Handler();
> rt = new RunTask();
> serviceHandler.postDelayed(rt ,5*1000);
>
> myLocationOverlay.enableMyLocation();
>
> mapView.getOverlays().add(new MyOverlay());
> }
>
> @Override
> public void onDestroy()
> {
> super.onDestroy();
> myLocationOverlay.disableMyLocation();
> serviceHandler.removeCallbacks(rt);
> }
>
> public void refreshHeatmapData()
> {rows = dbhelp.getAllRows(-1);}
>
>
> @Override
> protected boolean isRouteDisplayed() {
> return false;
> }
> class MyOverlay extends Overlay{
> public MyOverlay(){}
>
> public void draw(Canvas canvas, MapView mapv, boolean shadow){
> super.draw(canvas, mapv, shadow);
>
> Projection p = mapv.getProjection();
>
> Log.i(TAG,"MAP NO OF ROWS: "+rows.length);
>
> for(int i=0;i<rows.length;i++)
> { Log.i(TAG,"ACtual Data to draw: "+rows[i][2]+", "+rows[i][3]);
> int x = (int)(Double.parseDouble(rows[i][2])*1E6);
> int y = (int)(Double.parseDouble(rows[i][3])*1E6);
> Log.i(TAG,"Drawing point No:"+i+" @ "+x+","+y);
> GeoPoint in = new GeoPoint(x,y);
> Log.i(TAG,"GEO POINT- lat: "+in.getLatitudeE6()+", lon:
> "+in.getLongitudeE6());
> Point pixels = p.toPixels(in,null);
> double ss = Double.parseDouble(rows[i][4]);
> //test code for constant circle when zooming
> float radius = p.metersToEquatorPixels(100);
>
> RadialGradient g = new RadialGradient(pixels.x, pixels.y,
> radius,getColor2(ss) , null,TileMode.CLAMP);
>
> Paint gp = new Paint();
> gp.setShader(g);
> //myCanvas.drawCircle(x, y, radius, gp);
>
> canvas.drawCircle(pixels.x, pixels.y, radius, gp);
>
> }
>
> }
> }
> class RunTask implements Runnable
> {
> public void run()
> { Log.i(TAG,"Map data refresh run task");
> refreshHeatmapData();
> serviceHandler.postDelayed( this, 5*1000 );
> }
> }
> }
>
> --
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--
Dianne Hackborn
Android framework engineer
hack...@android.com
Note: please don't send private questions to me, as I don't have time to
provide private support, and so won't reply to such e-mails. All such
questions should be posted on public forums, where I and others can see and
answer them.
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