Databases
StackOverflow2013
Postsdbo
POProblem with getting GPS data when using CameraPreview
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POProblem with getting GPS data when using CameraPreview
    primarykey
    data
    text
    <p>I tried to write some AR app. For now I wrote some code that display camera prewiew and gets data from sensors on the device (acceleromentr, compas, gps reciver).</p> <p>When I run the code in separate app (like camera preview as one app and application that gets gps data as a second) everything is OK. But when I try to integrate this two modules - GPS stop working; it looks like the listener doesn't get any data. Did You had some similar problems?</p> <p>The code looks like this:</p> <pre><code>public void onResume() { super.onResume(); mLocationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE); mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 0.0f, mLocationListener); } public void onPause() { super.onPause(); mLocationManager.removeUpdates(mLocationListener); } private LocationListener mLocationListener = new LocationListener() { public void onLocationChanged(Location pLocation) { double lLatitude = pLocation.getLatitude(); double lLongitude = pLocation.getLongitude(); mGpsTextView.setText ("Longitude" + Double.toString(lLongitude) + " Latitude: " + Double.toString(lLatitude)); } public void onProviderDisabled(String pProvider) { mGpsTextView.setText ("Provider disabled"); } public void onProviderEnabled(String pProvider) { mGpsTextView.setText ("Provider enabled"); } public void onStatusChanged(String pProvider, int pStatus, Bundle pExtras) { switch (pStatus) { case LocationProvider.OUT_OF_SERVICE: mGpsTextView.setText("GPS out of service"); break; case LocationProvider.TEMPORARILY_UNAVAILABLE: mGpsTextView.setText("GPS temorarily unawalible"); break; case LocationProvider.AVAILABLE: mGpsTextView.setText("GPS avalible"); break; default: mGpsTextView.setText("EEE"); } } }; </code></pre> <p>I tried to register/unregister listener in onCreate/onPause but the behaviour is the same.</p> <p>The cameraPreview code looks like:</p> <p>private SurfaceHolder.Callback mSurfaceHolderCallback = new SurfaceHolder.Callback() { private Camera mCamera;</p> <pre><code> public void surfaceCreated (SurfaceHolder pSurfaceHolder) { stopAndReleaseCamera(); mCamera = Camera.open(); try { mCamera.setPreviewDisplay(pSurfaceHolder); } catch (Exception imLazy) { stopAndReleaseCamera(); imLazy.printStackTrace(); } } public void surfaceChanged (SurfaceHolder pSurfaceHolder, int pFormat, int pWidth, int pHeight) { Parameters lCameraParams = mCamera.getParameters(); lCameraParams.setPreviewSize (pWidth, pHeight); mCamera.setParameters (lCameraParams); mCamera.startPreview(); } public void surfaceDestroyed (SurfaceHolder pSurfaceHolder) { stopAndReleaseCamera(); } private void stopAndReleaseCamera() { if (mCamera != null) { try { mCamera.stopPreview(); mCamera.release(); } catch (Exception imLazy) { //ignore imLazy.printStackTrace(); } mCamera = null; } } }; </code></pre> <p>And this is registered in onCreate:</p> <pre><code> SurfaceView lSurfaceView = (SurfaceView)findViewById(R.id.CameraSurface); lSurfaceView.getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); lSurfaceView.getHolder().setFormat(PixelFormat.TRANSLUCENT); lSurfaceView.getHolder().addCallback (mSurfaceHolderCallback); </code></pre> <p>R.id.CameraSurface is defined in layout.xml as</p> <pre><code>SurfaceView android:id="@+id/CameraSurface" android:layout_width="fill_parent" android:layout_height="fill_parent" </code></pre> <p>Any ideas what is wrong?</p> <p>The code was tested on three different phones</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USmatekm
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POProblem with getting GPS data when using CameraPreview
      1. USmatekm
      1. VTBountyStart
    2. VO
      singulars
      1. POProblem with getting GPS data when using CameraPreview
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POProblem with getting GPS data when using CameraPreview
      1. This table or related slice is empty.
      1. VTUpMod
    1. COAt what point does LocationListener stop receiving events? Does it start receiving events again at some point?
      singulars
      1. POProblem with getting GPS data when using CameraPreview
      1. USPeter Knego
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload