Cwac Camera - Multiple Camera Views In One Layout (and Switching Between Them)

I am trying to build a camera feature similar to the new Front Back app - where you take two pictures in the same activity and display them each on half of the screen. So, the top

Solution 1:

I just realized that I could pass the image data from fragment to fragment (or pass a URI since the images are way over the 1 MB intent limit), but it seems like there should be an easier way to do this.

Have the hosting activity hold onto the images.

Or, have a retained fragment hold onto the images, if you are supporting configuration changes.

Solution 2:

Not sure if you still looking for a single-fragment solution. But I manage to switch the front/back camera using following code without creating another fragment. So, you may modifying a bit and it should fit yours.

My solution is as simple as removing the current CameraView instance and add a new one. If you prefer add it to another frame, be my guest.

The CameraView is added dynamically into a Framelayout:

publicclassMyCameraFragmentextendsCameraFragment {

CameraView cameraView;

@OverridepublicvoidonViewCreated(View view, Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    addCameraView(view);
}

privatevoidaddCameraView(View view) {
    FrameLayout frame = (FrameLayout)v.findViewById(R.id.cameraFrame);
    frame.removeAllViews();
    cameraView = newCameraView(getActivity());
    cameraView.setHost(cameraHost = newMyCameraHost(getActivity()));
    setCameraView(cameraView);
    frame.addView(cameraView);
}

privatevoiddoSwitchCamera() {
    // do some change to the settings.
    useFrontFacingCamera = !useFrontFacingCamera;
    if (null != cameraView) {
        cameraView.onPause();
    }
    addCameraView(getView());
    cameraView.onResume();
}

}

I'm not sure if super.onPause() and super.onResume() is necessary but they do call the onPause() and onResume() of CameraView, which I believe it is necessary.

Edited: after some code investigation and testing, I found that calling super.onPause/onResume is not necessary. Just call onPause and onResume on the cameraView is enough.