java.lang.NullPointerException: Attempt to read from field 'cn.ittiger.player.ui.VideoControllerView cn.ittiger.player.ui.StandardVideoView.mVideoControllerView' on a null object reference at cn.ittiger.player.VideoPlayerView.onExitSmallWindowPlay(VideoPlayerView.java:583) at cn.ittiger.player.VideoPlayerView.toggleSmallWindow(VideoPlayerView.java:530) at cn.ittiger.player.VideoPlayerView.onAttachedToWindow(VideoPlayerView.java:364) at android.view.View.dispatchAttachedToWindow(View.java:14551) at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2839) at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2846)