VLC媒体付款人中的视频倒带按钮控制

Question

实际上我正在尝试在我的应用程序中播放视频，它会播放，但是所有控件（播放，暂停，前进）都在工作，但倒带按钮不起作用。如果您对此有任何想法，请告诉我。

 vlcButtonRewind.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {

         /*   if (libvlc.isPlaying()) {
             if (trickPlayFwd=true ) {
                 trickPlaySpeedRev = 1;
                 trickPlaySpeedFwd = 1;
             }*/
            trickPlayFwd=false;
            if (trickPlaySpeedRev<32){
                trickPlaySpeedRev=(trickPlaySpeedRev*2);
                trickPlaySpeed=(trickPlaySpeedRev);
                trickPlayRev=true;}
            else{
                trickPlaySpeedRev = 1;
                trickPlayRev =false;}

            // trickPlayRewind(trickPlaySpeedRev);
            Rspeed= String.valueOf(trickPlaySpeedRev);
            trickPlayRewind(trickPlaySpeedRev);   Toast toast = Toast.makeText(getApplicationContext(), "<< " + Rspeed + "X", Toast.LENGTH_SHORT);
            toast.setGravity(Gravity.BOTTOM| Gravity.RIGHT, 0,0);
            toast.show();
          libvlc.setRate(trickPlaySpeedRev);

            int i =vlcSeekbar.getProgress();
           libvlc.setFrameSkip(true);

            dorev=true;

        }
    });