@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle item selection
switch (item.getItemId()) {
case R.id.switch_cam:
// Release this camera -> mCameraCurrentlyLocked
if (mCamera != null) {
mCamera.stopPreview();
mPreview.setCamera(null);
mCamera.release();
mCamera = null;
}
// Acquire the next camera and request Preview to reconfigure
// parameters.
mCamera = Camera.open((mCameraCurrentlyLocked + 1) % mNumberOfCameras);
mCameraCurrentlyLocked = (mCameraCurrentlyLocked + 1) % mNumberOfCameras;
mPreview.switchCamera(mCamera);
// Start the preview
mCamera.startPreview();
return true;
case android.R.id.home:
Intent intent = new Intent(this.getActivity(), MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
startActivity(intent);
default:
return super.onOptionsItemSelected(item);
}
}
@Override
public void onResume() {
super.onResume();
// Open the default i.e. the first rear facing camera.
mCamera = Camera.open(mDefaultCameraId);
mCameraCurrentlyLocked = mDefaultCameraId;
mPreview.setCamera(mCamera);
}
@Override
public void onPause() {
super.onPause();
// Because the Camera object is a shared resource, it's very
// important to release it when the activity is paused.
if (mCamera != null) {
mPreview.setCamera(null);
mCamera.release();
mCamera = null;
}
}