Q:

getting Null Pointer Exception when getting of media status in onstatusUpdated() while casting in android

I am getting NullPointerException when getting of media status in onstatusUpdated() method of RemoteMediaPlayer while casting first time. How to resolve this and i want to know about the 
mRemoteMediaPlayer.requestStatus(mApiClient).setResultCallback(new ResultCallback<RemoteMediaPlayer.MediaChannelResult>(){});

but it works fine when casting the second time with different media while maintaining the session for same chromecast device.
mRemoteMediaPlayer.setOnStatusUpdatedListener(new RemoteMediaPlayer.OnStatusUpdatedListener() {

    @Override
    public void onStatusUpdated() {
        MediaStatus mediaStatus = mRemoteMediaPlayer.getMediaStatus();
        MediaInfo mediaInfo = mRemoteMediaPlayer.getMediaInfo();

        RemoteisPlaying = mediaStatus.getPlayerState() == MediaStatus.PLAYER_STATE_PLAYING;                                                 
    }
});

A:

Just surround your code with simple null pointer checks as follows:
mRemoteMediaPlayer.setOnStatusUpdatedListener(new RemoteMediaPlayer.OnStatusUpdatedListener() {

@Override
public void onStatusUpdated() {
    MediaStatus mediaStatus;
    MediaInfo mediaInfo;
    if(mRemoteMediaPlayer!=null){
        mediaStatus = mRemoteMediaPlayer.getMediaStatus();
        mediaInfo = mRemoteMediaPlayer.getMediaInfo();
        if(mediaStatus!=null){
            //you could even check if mediaStatus.getPlayerState() is not null here
            //before the next line of code
            RemoteisPlaying = mediaStatus.getPlayerState() == MediaStatus.PLAYER_STATE_PLAYING;         
        }
    }                                                
}
});

