我必须开发一个android应用程序。
这里我必须检查值。如果值为Null意味着必须隐藏片段。否则片段是可见的。我该怎么办??
请给我解决这些问题的方法。
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
}
如何隐藏这些活动上的片段…
我的布局文件:
<?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>
如何隐藏片段??请给我一个解决方案吧?
try yourView.setVisibility(View.VISIBLE);
yourView.setVisibility(View.GONE);
//这个视图是不可见的,它不占用任何空间用于布局
和yourView.setVisibility(View.INVISIBLE);
//这个视图是不可见的,但它仍然占用空间的布局目的