Force a camera to always open in portrait mode in

2019-01-07 00:26发布

This question already has an answer here:

Is it possible to open the Camera Intent in android in only portrait mode, that is even if the user flipped the device, the camera will still be in portrait mode,

I tried the following answer: Force Portrait Mode but didn't work, Thanks

1条回答
Lonely孤独者°
2楼-- · 2019-01-07 01:08

Try it -

private void setCameraDisplayOrientation(Activity activity,
         int cameraId, android.hardware.Camera camera) {
     android.hardware.Camera.CameraInfo info =
             new android.hardware.Camera.CameraInfo();
     android.hardware.Camera.getCameraInfo(cameraId, info);
     int rotation = activity.getWindowManager().getDefaultDisplay()
             .getRotation();
     int degrees = 0;
     switch (rotation) {
         case Surface.ROTATION_0: degrees = 0; break;
         case Surface.ROTATION_90: degrees = 90; break;
         case Surface.ROTATION_180: degrees = 180; break;
         case Surface.ROTATION_270: degrees = 270; break;
     }

     int result;
     if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
         result = (info.orientation + degrees) % 360;
         result = (360 - result) % 360;  // compensate the mirror
     } else {  // back-facing
         result = (info.orientation - degrees + 360) % 360;
     }
     camera.setDisplayOrientation(result);
 }

private void initCamera() {
     if(mCamera == null) {
          mCamera = Camera.open();
          setCameraDisplayOrientation(activity, CameraInfo.CAMERA_FACING_BACK, mCamera);
          mCamera.unlock();
      }
}
查看更多
登录 后发表回答