controller is managed by an instance of UINavigationController. .resignFirstResponder()也会崩溃,并出现此错误 我试着添加一个延时定时器更改为.endEditing(false)也会崩溃。 在不添加UINavigationController的情况下有什么建议?
我有一个MediaRecorder录制的视频,我对的效果感到非常困惑。mMediaRecorder = new MediaRecorder();mCamera.unlock();mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mMediaRecorder.setProfile(CamcorderProfile.QUALITY_TIME_LA