ProgressBar對於CardView中的所有位置都不可見

Question

我正在嘗試添加youtube播放器API，並且在縮略圖可見性發生單擊事件時進度條出現，並且視頻開始播放時進度條消失。最初ProgressBar消失了。

layout.xml

<RelativeLayout 
      android:id="@+id/rl" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_below="@+id/hr" 
      android:layout_centerHorizontal="true" 
      android:gravity="center_horizontal"> 


      <com.example.prateek.videoplayertest.YoutubePlayerView   
       android:id="@+id/ytplayer" 
       android:layout_width="match_parent" 
       android:layout_height="match_parent" 
       android:layout_alignParentLeft="true" 
       android:layout_alignParentStart="true" 
       android:layout_alignParentTop="true" 
       android:layout_centerVertical="true" 
       android:layout_marginLeft="-3dp" 
       android:adjustViewBounds="true" 
       android:scaleType="centerCrop"> 

       <ImageView 
        android:id="@+id/yt_thumbnail" 
        android:layout_width="match_parent" 
        android:layout_height="match_parent" 
        android:layout_alignParentTop="true" 
        android:layout_marginLeft="-3dp" 
        android:adjustViewBounds="true" 
        android:background="#000000" 
        android:scaleType="fitXY"> 
       </ImageView> 
      </com.example.prateek.videoplayertest.YoutubePlayerView> 

      <ProgressBar 
       android:id="@+id/item_progress" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:foregroundGravity="center" 
       android:indeterminate="true" 
       android:visibility="gone" 
       android:layout_centerInParent="true" /> 


     </RelativeLayout> 

RecyclerAdapter.java

@Override 
    public void onBindViewHolder(final ViewHolder holder, final int position) { 

Picasso.with(context).load(video_thumbnail.get(position)).memoryPolicy(MemoryPolicy.NO_CACHE, MemoryPolicy.NO_STORE).into(holder.yt_video_thumb); 
       holder.ytplayer.setVisibility(View.VISIBLE); 
       holder.ytplayer.setAutoPlayerHeight(context); 

       final YTParams params = new YTParams(); 
       params.setPlaybackQuality(PlaybackQuality.small); 
       holder.yt_video_thumb.setOnClickListener(new View.OnClickListener() { 
        @Override 
        public void onClick(View v) { 
         holder.flag_y = 1; 
         if(holder.flag_x == 1 && holder.flag_y == 1){ 
          holder.ytplayer.play(); 
         } 
          holder.yt_video_thumb.setVisibility(View.GONE); 
          holder.yt_progress.setVisibility(View.VISIBLE); 
        } 
       }); 
       holder.ytplayer.initialize(video_id.get(position), params, new YoutubePlayerView.YouTubeListener() { 

        @Override 
        public void onReady() { 
         holder.flag_x = 1; 
         if(holder.flag_x == 1 && holder.flag_y == 1){ 
          holder.ytplayer.play(); 
         } 

         JLog.i("onReady()"); 
        } 

        @Override 
        public void onStateChange(YoutubePlayerView.STATE state) { 
         /** 
         * YoutubePlayerView.STATE 
         * 
         * UNSTARTED, ENDED, PLAYING, PAUSED, BUFFERING, CUED, NONE 
         * 
         */ 
         if(state == YoutubePlayerView.STATE.ENDED){ 
          holder.yt_video_thumb.setVisibility(View.VISIBLE);      } 
         if(state == YoutubePlayerView.STATE.BUFFERING){ 
          if(holder.flag_x == 1 && holder.flag_y == 1){ 
           holder.ytplayer.play(); 
          } 
          holder.ytplayer.play(); 

         } 

         if(state == YoutubePlayerView.STATE.PLAYING){ 
          holder.yt_progress.setVisibility(View.GONE); 
          holder.flag_y = 0; 
          holder.flag_x = 0; 
          Log.d("ValueCHECK", holder.flag_y+" "+ holder.flag_x); 
         } 
         if(state == YoutubePlayerView.STATE.PAUSED){ 
          holder.yt_video_thumb.setVisibility(View.VISIBLE); 

         } 

         JLog.i("onStateChange(" + state + ")"); 
        } 

        @Override 
        public void onPlaybackQualityChange(String arg) { 
         JLog.i("onPlaybackQualityChange(" + arg + ")"); 
        } 

        @Override 
        public void onPlaybackRateChange(String arg) { 
         JLog.i("onPlaybackRateChange(" + arg + ")"); 
        } 

        @Override 
        public void onError(String arg) { 
         holder.yt_video_thumb.setVisibility(View.VISIBLE); 
         JLog.e("onError(" + arg + ")"); 
        } 

        @Override 
        public void onApiChange(String arg) { 
         JLog.i("onApiChange(" + arg + ")"); 
        } 

        @Override 
        public void onCurrentSecond(double second) { 

        } 


        @Override 
        public void onDuration(double duration) { 
         // total duration 
         JLog.i("onDuration(" + duration + ")"); 
        } 

        @Override 
        public void logs(String log) { 
         // javascript debug log. you don't need to use it. 
         JLog.d(log); 
        } 
       }); 
} 

但正在發生的事情，當我點擊任何的視頻第一次出現進度條和工作正常，但對於下一個視頻當我點擊進度條不會出現。我不明白爲什麼？ 我希望進度條在卡片視圖中的所有位置都可見，當我點擊視頻縮略圖時。 任何人都可以幫助我嗎？ 任何幫助將不勝感激 謝謝你！

Answer 1

最後，得到了解決方案，而不是設置progressBar GONE的可見性設置可見性INVISIBLE並初始設置progressBar INVISIBLE的可見性。 希望它會有所幫助。 謝謝