@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
public void onResume() {
addView(previewStrategy.getWidget());
if (camera == null) {
cameraId = getHost().getCameraId();
if (cameraId >= 0) {
try {
camera = Camera.open(cameraId);
if (getActivity().getRequestedOrientation()
!= ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED) {
onOrientationChange.enable();
}
setCameraDisplayOrientation();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH
&& getHost() instanceof Camera.FaceDetectionListener) {
camera.setFaceDetectionListener((Camera.FaceDetectionListener) getHost());
}
} catch (Exception e) {
getHost().onCameraFail(FailureReason.UNKNOWN);
}
} else {
getHost().onCameraFail(FailureReason.NO_CAMERAS_REPORTED);
}
}
}
/**
* Start the camera and set up its preview texture to the given texture (essentially copying
* camera into texture.
*
* @param texture
*/
public void startCamera(int texture) {
surface = new SurfaceTexture(texture);
surface.setOnFrameAvailableListener(this);
camera = Camera.open();
camera.setFaceDetectionListener(this);
try {
camera.setPreviewTexture(surface);
camera.startPreview();
} catch (IOException ioe) {
Log.w("MainActivity", "Failed to start camera preview on texture.");
}
camera.startFaceDetection();
}
@Override
public void setFaceDetectionListener(FaceDetectionListener listener) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
camera.setFaceDetectionListener(listener);
}
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
// TODO Auto-generated method stub
camera = Camera.open();
camera.setFaceDetectionListener(faceDetectionListener);
}