android----Activity对应的UI嵌套子UI(fragment)方法

方法一：

通过在Activity类中构建两个字页面的对象，嵌入到主页面中（android:id="@+id/container"主、子页面相同）

主UI：activity_main.xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"--必填

android:id="@+id/container" --必填

android:layout_width="match_parent" --必填

android:layout_height="match_parent"> --必填

</FrameLayout>

子UI：fragment_main.xml 和 fragment_main2.xml

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

android:layout_width="match_parent"

android:layout_height="match_parent"

</RelativeLayout>

Activity：MainActivity.java

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);//渲染主页面activity_main

if (savedInstanceState == null) {

getFragmentManager().beginTransaction().add(R.id.container, new PlaceholderFragment()).commit();

getFragmentManager().beginTransaction().add(R.id.container, new PlaceholderFragment2()).commit();

}

public static class PlaceholderFragment extends Fragment {

public PlaceholderFragment() {

}

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

View rootView = inflater.inflate(R.layout.fragment_main, container,false);//加载子页面fragment_main

return rootView;

}

public static class PlaceholderFragment2 extends Fragment {

public PlaceholderFragment2() {

}

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

View rootView = inflater.inflate(R.layout.fragment_main2, container,false);//加载子页面fragment_main2

return rootView;

}

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