检测设备是否存在前置摄像头

Question

照相机，我自己写的代码：

mMediaRecorderVideo=new MediaRecorder();
mCamera=Camera.open();      
mCamera.setDisplayOrientation(90);
mCamera.unlock();
mMediaRecorderVideo.setCamera(mCamera);
mMediaRecorderVideo.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
mMediaRecorderVideo.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
mMediaRecorderVideo.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH));

使用设备的默认相机，但是如果有前置相机需要设置，应该怎么检测？谢谢

Answer 1

int&nbsp;numCameras=&nbsp;Camera.getNumberOfCameras(); for(int&nbsp;i=0;i<numCameras;i++){ &nbsp;&nbsp;&nbsp;&nbsp;Camera.CameraInfo&nbsp;info&nbsp;=&nbsp;new&nbsp;CameraInfo(); &nbsp;&nbsp;&nbsp;&nbsp;Camera.getCameraInfo(i,&nbsp;info); &nbsp;&nbsp;&nbsp;&nbsp;if(CAMERA_FACING_FRONT&nbsp;==&nbsp;info.facing){ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;true; &nbsp;&nbsp;&nbsp;&nbsp;} } return&nbsp;false;如果你还要得到前置相机的数量，那么在return中返回i,0返回not found。

Answer 2

int&nbsp;cameraId&nbsp;=&nbsp;android.hardware.Camera.getNumberOfCameras();cameraId大于1就是有两个以上的摄像头，打开用open(int id),id为0到cameraId-1