如何正确的在fragment中显示surfaceview呢？

肉鸽 2015-09-03 06:11:51

先说说遇到的问题：fragment中的view如果是个surfaceview，则第一次不显示该view

再说说程序结构
1、Activity工作在Tab模式中，其下有2个Tab：Tab_P1、TAB_P1
2、Tab_P1绑定fragment_P1
3、Tab_P2绑定fragment_P2

MinaActivity.java代码如下：

protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.activity_main);

		

		ActionBar actionBar = getActionBar();

		actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

		Tab_P1 = actionBar.newTab();

		Tab_P1.setCustomView(R.layout.tab_layout_dong);

		Tab_P2 = actionBar.newTab();

		Tab_P2.setCustomView(R.layout.tab_layout_nan);

		

		fragment_P1 = new Fragment_P1();

		MyTabListener AListener=new MyTabListener(fragment_P1);

		Tab_P1.setTabListener(AListener);



		fragment_P2 = new Fragment_P2();

		MyTabListener BListener=new MyTabListener(fragment_P2);

		Tab_P2.setTabListener(BListener);		

		

		actionBar.addTab(Tab_P1);

		actionBar.addTab(Tab_P2);

		

		FragmentManager fragmentManager = getFragmentManager();

		FragmentTransaction transaction = fragmentManager.beginTransaction();

		transaction.replace(R.id.fragment_place, fragment_P1);

		transaction.commit();

}

activity_main.xml文件如下：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context="${relativePackage}.${activityClass}" >



    <FrameLayout

        android:id="@+id/fragment_place"

        android:layout_width="match_parent"

        android:layout_height="wrap_content" >

    </FrameLayout>

</RelativeLayout>

Fragment_P1.java核心代码如下:

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)

{

		View view = inflater.inflate(R.layout.fragment_layout_dong, container, false); //①<--这样可以正常

		//View view = new MySurfaceView(this.getActivity());	//②这样就显示不出来

		return view;

}

fragment_layout_dong.xml文件内容：

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

    

    <TextView

        android:id="@+id/fragment_dong_title"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_vertical|center"

        android:text="test"

        />

</LinearLayout>

MySurfaceView.java代码有点长，就是在其中随便画几条线，贴一部分上来:

public MySurfaceView(Context aContext)

{

		super(aContext);

		context=aContext;

		holder = this.getHolder();

		holder.addCallback(this);

}



public void surfaceCreated(SurfaceHolder holder) {

		myThread = new Thread(new MyRunnable());

		runFlag = true;

		myThread.start();

}



class MyRunnable implements Runnable {

		@Override

		public void run()

  	{

  		//这里随便画几条线段测试

  	}