How to autofocus Android camera automatically?

Question

I want to autofocus Android camera as soon as camera holds still. Im looking for tutorials or samples how to do it or at least small sample that shows what classes I can use

Answer 1

you can try code:

ShutterCallback _pfnShutterCallback = new ShutterCallback() {

        @Override
        public void onShutter() {
            // TODO Auto-generated method stub

        }

    };

    PictureCallback _pfnRawPictureCallback = new PictureCallback() {

        @Override
        public void onPictureTaken(byte[] data, Camera camera) {
            // TODO Auto-generated method stub

        }
    };

    private AutoFocusCallback _pfnAutoFocusCallback = new AutoFocusCallback() {

        @Override
        public void onAutoFocus(boolean success, Camera camera) {
            // TODO Auto-generated method stub
            camera.autoFocus(null);
            camera.takePicture(_pfnShutterCallback, _pfnRawPictureCallback,
                    mPicture);

        }
    };
    private PictureCallback mPicture = new PictureCallback() {

        public void onPictureTaken(byte[] data, Camera camera) {
            new SavePhotoTask().execute(data);
            camera.startPreview();

        }
    };
class SavePhotoTask extends AsyncTask {
// Process save file image
}

call capture : mCamera.autoFocus(autoFocusCallback);

You can refer at: http://android-er.blogspot.com/2011/01/start-camera-auto-focusing-autofocus.html