可见和去掉了片段在android

Question

我必须开发一个android应用程序。

在这里，我必须检查value.If值为空意味着必须隐藏fragment.otherwise可见的片段。我该怎么办？

请给我这些解决方案..

FragmentManager fragmentManager = getFragmentManager(); 
     FragmentTransaction fragmentTransaction = fragmentManager 
       .beginTransaction(); 

     YouTubePlayerSupportFragment fragment = new YouTubePlayerSupportFragment(); 
     fragmentTransaction.add(R.id.youtube_fragment, fragment); 
     fragmentTransaction.commit(); 
     _Video = articlevideo.substring(1); 
     fragment.initialize(DeveloperKey.DEVELOPER_KEY, new OnInitializedListener() { 


      public void onInitializationSuccess(YouTubePlayer.Provider provider, 
        YouTubePlayer player, boolean wasRestored) { 
       if (!wasRestored) { 
        player.cueVideo(_Video); 
       } 
      } 

      @Override 
      public void onInitializationFailure(Provider arg0, 
        YouTubeInitializationResult arg1) { 
      } 

     }); 





     String vid = "Null"; 
     if(_Video.equalsIgnoreCase(vid)) 
     { 

     //Gone the fragment  
     } 
     else 
     { 

      //Visible the fragment  

     } 

如何隐藏这些活动的片段......

这个布局我的文件：

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:background="#414042" 
android:orientation="vertical" > 

<RelativeLayout 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 

    android:background="#414042" 
    android:orientation="vertical" > 

    <TextView 
     android:id="@+id/title" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:layout_margin="5dp" 

     android:textColor="#FFFFFF" 
     android:textSize="20sp" 
     android:textStyle="bold" /> 
    <fragment 
    android:name="com.google.android.youtube.player.YouTubePlayerSupportFragment" 
    android:id="@+id/youtube_fragment" 
    android:layout_width="match_parent" 
    android:layout_below="@+id/title" 
    android:layout_height="wrap_content"/> 

    <WebView 
       android:id="@+id/fullcontent" 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content" 
       android:background="#414042" 
       android:layout_below="@+id/youtube_fragment" 
       /> 



    </RelativeLayout> 


    </RelativeLayout> 

哪有我隐藏片段？请给我解决方案？

Answer 1

尝试yourView.setVisibility(View.VISIBLE);

yourView.setVisibility(View.GONE); //这种观点是不可见的，并且它不采取布局的目的

和yourView.setVisibility(View.INVISIBLE);任何空间//这种观点是无形的，但它仍然占用空间布局目的。