how to customize CameraView for android ZBar QrCode Reader

Question

I am using Zbar for reading QRCode. I use this https://github.com/DushyanthMaguluru/ZBarScanner example for my activity. The Question is how can I show cameraView on my FrameLa

Answer 1

First of all remove the line that seems to me to acquire camera access: mCamera = getCameraInstance();. You don't want to do that as the CameraPreview will do it for you.

I wouldn't use a FrameLayout as items are put one after the other and you want to put your cameraPreview at last. So you should have a LinearLayout in another RelativeLayout (I know, it's not efficient, but that's fine for now). Something like (your main.xml layout):

Now, you would need to put the CameraPreview in zbar_layout_area. For this reason, try to change the code to (blind coding):

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    if (!isCameraAvailable()) {
        // Cancel request if there is no rear-facing camera.
        cancelRequest();
        return;
    }

    // Hide the window title.
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
    setContentView(R.layout.main);

    mAutoFocusHandler = new Handler();

    // Create and configure the ImageScanner;
    setupScanner();

    // Create a RelativeLayout container that will hold a SurfaceView,
    // and set it as the content of our activity.
    mPreview = new CameraPreview(this, this, autoFocusCB);
    LinearLayout zbarLayout = (LinearLayout) findViewById(R.id.zbar_layout_area);
    mPreview.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
    zbarLayout.addView(mPreview);
}

Also make sure you have set enough prermissions: