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POFailed to take picture using auto-focus
 

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  1. POFailed to take picture using auto-focus
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    <p>I have searched some solutions with my problem and sure there are many related issues regarding it but nothing solves my concern.</p> <p>I am receiving a runtime exception : <code>takepicture failed:native_autofocus</code>..etc.</p> <p>I tried to take picture from camera using autofocus and I can't seem to understand what could have caused the error. </p> <p>Here is my code.</p> <pre><code>public class CameraPreview extends SurfaceView implements SurfaceHolder.Callback { private SurfaceHolder mholder; private Camera mcamera; private Handler handler = new Handler(); public CameraPreview(Context context, Camera camera) { super(context); this.mcamera = camera; mholder = getHolder(); mholder.addCallback(this); mholder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { if (mholder.getSurface() == null) { return; } try { mcamera.stopPreview(); } catch (Exception e) { Log.d("surfaceChanged", e.toString()); } try { mcamera.setPreviewDisplay(holder); mcamera.startPreview(); } catch (IOException e) { Log.d("surfaceChanged---&gt;surfaceCreated", e.toString()); } } </code></pre> <p>I think somethings is lacking in my runnable code, I tried to omit the runnable and execute autofocus once, it removed the runtime error. Did I missed to reinitialize something in this part?</p> <pre><code> private void autoFocus(Camera mcamera){ final Camera cam=mcamera; handler.postDelayed(new Runnable() { @Override public void run() { cam.autoFocus(autoFocusCallback); handler.postDelayed(this, 1500L); } }, 1500L); } AutoFocusCallback autoFocusCallback=new AutoFocusCallback() { @Override public void onAutoFocus(boolean success, Camera camera) { camera.takePicture(null, null, mPicture); } }; private PictureCallback mPicture=new PictureCallback() { @Override public void onPictureTaken(byte[] data, Camera camera) { //do something } }; @Override public void surfaceCreated(SurfaceHolder holder) { try { mcamera.setPreviewDisplay(holder); mcamera.startPreview(); mcamera.autoFocus(autoFocusCallback); } catch (IOException e) { Log.d("surfaceCreated", e.toString()); } } @Override public void surfaceDestroyed(SurfaceHolder holder) { } } </code></pre>
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    1. COPlease post more detail on the errors you are seeing. A log snippet from the start of your app to the failure would be best.
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      1. USEddy Talvala
 

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