如何通过编程方式为android启用前置摄像头而不是后置摄像头？

Question

我用的是一部旧手机，它的后部摄像头损坏了，所以我想把默认的相机设置为我的前摄像头。当我每次打开相机应用程序的时候，它总是打开前面的摄像头，这有可能做到吗？

Answer 1

Camera mCamera;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

   mCamera= Camera.open(1);
}

注意：

0表示CAMERA_FACING_BACK

1用于CAMERA_FACING_FRONT

Answer 2

尝尝这个!

Camera.open(android.hardware.Camera.CameraInfo.CAMERA_FACING_FRONT);//avoid passing hardcode values

Answer 3

这可能会有帮助。源网址：this

Button otherCamera = (Button) findViewById(R.id.OtherCamera);

otherCamera.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (inPreview) {
    camera.stopPreview();
}
//NB: if you don't release the current camera before switching, you app will crash
camera.release();

//swap the id of the camera to be used
if(currentCameraId == Camera.CameraInfo.CAMERA_FACING_BACK){
    currentCameraId = Camera.CameraInfo.CAMERA_FACING_FRONT;
}
else {
    currentCameraId = Camera.CameraInfo.CAMERA_FACING_BACK;
}
camera = Camera.open(currentCameraId);

try {

    camera.setPreviewDisplay(previewHolder);
} catch (IOException e) {
    e.printStackTrace();
}
camera.startPreview();
}