objective-c - 如何显示相机但不让用户拍照？

Question

如何让用户看到前置摄像头，但又不能在iPhone 4 / 4s和/或iPod Touch 4上阻止他们拍照，录像或切换到后置摄像头？

Answer 1

cameraPicker = [[UIImagePickerController alloc] init];
....
cameraPicker.showsCameraControls = NO;
cameraPicker.cameraDevice = UIImagePickerControllerCameraDeviceFront;