I have a screenshot of the flicker here: http://tinypic.com/r/35003lv/6
On 5 Dec., 12:59, kaloer <mkal...@gmail.com> wrote:
> Hi,
>
> I have an Dialog with a custom view. This view has a SurfaceView which
> shows a camera preview. However, the preview is very flickering.
>
> The taken photo does not contain flicker. It looks as it should.
>
> Why does the preview flicker? (The camera does work :-) )
>
> This is my custom view:
> ---------
>
> public class CameraView extends LinearLayout implements
> SurfaceHolder.Callback, OnClickListener, PictureCallback {
>
> private SurfaceView surfView;
> private SurfaceHolder previewHolder;
> private Camera camera;
> OnProfilePictureTakenListener onProfilePictureTakenListener = null;
>
> public CameraView(Context context) {
> super(context);
> setOnClickListener(this);
> surfView = new SurfaceView(getContext());
> addView(surfView);
> previewHolder = surfView.getHolder();
> previewHolder.addCallback(this);
>
> previewHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
> }
>
> @Override
> public void surfaceChanged(SurfaceHolder holder, int format, int
> width,
> int height) {
> Camera.Parameters parameters = camera.getParameters();
> parameters.setPreviewSize(width, height);
> parameters.setPictureFormat(PixelFormat.JPEG);
> camera.setParameters(parameters);
> camera.startPreview();
> }
>
> @Override
> public void surfaceCreated(SurfaceHolder holder) {
> camera = Camera.open();
> try {
> camera.setPreviewDisplay(previewHolder);
> } catch(Throwable t) {
> Log.e("surfaceCallback", "Exception", t);
> Toast.makeText(getContext(), t.getMessage(),
> Toast.LENGTH_LONG).show
> ();
> }
> }
>
> @Override
> public void surfaceDestroyed(SurfaceHolder holder) {
> camera.stopPreview();
> camera.release();
> camera = null;
> }
>
> @Override
> public void onClick(View v) {
> takePicture();
> }
>
> private void takePicture() {
> camera.stopPreview();
> camera.takePicture(null, null, this);
> }
>
> @Override
> public void onPictureTaken(byte[] data, Camera camera) {
> new SavePhotoTask().execute(data);
> camera.startPreview();
> }
>
> public void setOnPictureTakenListener(OnProfilePictureTakenListener
> lis) {
> onProfilePictureTakenListener = lis;
> }
>
> class SavePhotoTask extends AsyncTask<byte[], String, String> {
>
> @Override
> protected String doInBackground(byte[]... jpeg) {
> File photo = new
> File(Environment.getExternalStorageDirectory(),
> "/.addMePictures/" + System.currentTimeMillis());
> if(photo.exists()) {
> photo.delete();
> }
> try {
> FileOutputStream fos = new
> FileOutputStream(photo.getPath());
> fos.write(jpeg[0]);
> fos.close();
> } catch(IOException e) {
> e.printStackTrace();
> }
> if(onProfilePictureTakenListener != null) {
>
> onProfilePictureTakenListener.onProfilePictureTaken(photo);
> }
> return null;
> }
>
> }
>
> public interface OnProfilePictureTakenListener {
> public abstract void onProfilePictureTaken(File imgFile);
> }
>
> }
>
> --------
>
> Thank you very much!
>
> //Kaloer
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