Building my own camera application + Automatically capture the image

Question

I have created my own camera application. And when I click the button it takes the picture and saves it in the galary. What I want to do is to take the picture without a preview

Answer 1

the trick is to give the Camera Class a SurfaceView which is not part of the view hierarchy. The following code is from one of my apps where i used this technique to display my own

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }

    @Override
    protected void onPause() {
        super.onPause();
        if (mCamera != null) {
            mCamera.stopPreview();
            mCamera.release();
            mCamera = null;
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
        mCamera = Camera.open();
        startPreview();
    }

    private void startPreview() {
            if (mCamera != null) {
                mCamera.stopPreview();
                try {
                    mCamera.setPreviewDisplay(new SurfaceView(this).getHolder());
                } catch (IOException e) {
                    e.printStackTrace();
                }
                mCamera.setPreviewCallbackWithBuffer(this);

                Camera.Parameters parameters = mCamera.getParameters();    
                parameters.setPreviewSize(IMAGE_W, IMAGE_H);
                mCamera.setParameters(parameters);
                PixelFormat p = new PixelFormat();
                PixelFormat.getPixelFormatInfo(parameters.getPreviewFormat(), p);
                int bufSize = (IMAGE_W * IMAGE_H * p.bitsPerPixel) / 8;
                mCamera.addCallbackBuffer(new byte[bufSize]);
                mCamera.startPreview();
            }
        }
    public void onPreviewFrame(final byte[] data, Camera camera) {
        if (mCamera == null) {
            return;
        }
        mCamera.addCallbackBuffer(data);
    }
}