Re: [android-developers] rotating map

And for completeness for the rotation I do the following:

public void onSensorChanged(SensorEvent event) {

RideRouterApp.i(String.format("Sensor Name: %s, oriented %f", event.sensor.getName(), event.values[0]));

         synchronized (this) {

               mHeading = event.values[0];

               invalidate();

           }

}

        @Override

        protected void dispatchDraw(Canvas canvas) {

            canvas.save(Canvas.MATRIX_SAVE_FLAG);

            canvas.rotate(-mHeading, getWidth() * 0.5f, getHeight() * 0.5f);

            mCanvas.delegate = canvas;

            super.dispatchDraw(mCanvas);

            canvas.restore();

            mapView.invalidate();

        }

On Thursday, April 5, 2012 11:45:45 AM UTC-4, RedBullet wrote:

Like I said, it is derrived from the sample that is provided with the Google API. But here is the onCreate for the activity:

public void onCreate(Bundle bundle) {

super.onCreate(bundle);

String APIKey = "mykey";

mSensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);

    

// Create Rotate view

mRotateView = new RotateView(this);

RelativeLayout layout = new RelativeLayout(this);

RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.FILL_PARENT, RelativeLayout.LayoutParams.FILL_PARENT);

layout.setLayoutParams(params);

 

// create a map view

        mapView = new MapView(this,APIKey);

mapView.setBuiltInZoomControls(true);

mapView.setClickable(true);

mapView.setEnabled(true);

mapController = mapView.getController();

mapController.setZoom(14); // Zoom 1 is world view

mapView.setBuiltInZoomControls(true);

Drawable drawable = this.getResources().getDrawable(R.drawable.pin_green);

itemizedoverlay = new MyOverlays(drawable, this);

layout.removeAllViews();

mRotateView.addView(mapView);

layout.addView(mRotateView);

                setContentView(layout);

mylocation = new MyLocationOverlay(this,mapView);

createMarker();

Essentially there is a view created that manages the rotation, and it is updated when the sensor changes. That all works, it rotates nicely. But text on the map does not, and actually the touch layer doesn't (for example if I rotate 180 degrees and then pan down it actually pans up).

I am just if anyone has achieved different behavior they would be willing to articulate what they did to make it work properly?

On Thursday, April 5, 2012 11:37:55 AM UTC-4, TreKing wrote:

On Thu, Apr 5, 2012 at 10:33 AM, RedBullet <> wrote:

I am wondering if perhaps I missed something in my implementation? Maybe I need to invalidate a view or something?

You've provided almost no information about your implementation, so it would be quite difficult for anyone to comment on it.

-------------------------------------------------------------------------------------------------
TreKing - Chicago transit tracking app for Android-powered devices

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