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MainActivity.java

public class MainActivity extends FragmentActivity {
    // Fragment TabHost as mTabHost
    private FragmentTabHost mTabHost;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

 mTabHost = (FragmentTabHost)findViewById(android.R.id.tabhost);
    mTabHost.setup(this, getSupportFragmentManager(), R.id.realtabcontent);
    mTabHost.addTab(mTabHost.newTabSpec("tab1").setIndicator("Tab1"),
            Tab1Fragment.class, null);
    mTabHost.addTab(mTabHost.newTabSpec("tab2").setIndicator("Tab2"),
            Tab2Fragment.class, null);
    mTabHost.addTab(mTabHost.newTabSpec("tab3").setIndicator("Tab3"),
            Tab3Fragment.class, null);
    }
}

Tab1Fragment.java

public class Tab1Fragment extends Fragment  {

 @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View V = inflater.inflate(R.layout.tab1_view, container, false);

        return V;
    }
}

Tab2Fragment.java

public class Tab2Fragment extends Fragment  {

     @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
            // Inflate the layout for this fragment
            View V = inflater.inflate(R.layout.tab2_view, container, false);

            return V;
        }
    }

Tab3Fragment.java

public class Tab3Fragment extends Fragment  {

     @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
            // Inflate the layout for this fragment
            View V = inflater.inflate(R.layout.tab3_view, container, false);

            return V;
        }
    }

activity_main.xml

android.support.v4.app.FragmentTabHost
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/tabhost"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

<LinearLayout
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TabWidget
        android:id="@android:id/tabs"

        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="0"/>

    <FrameLayout
        android:id="@android:id/tabcontent"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_weight="0"/>

    <FrameLayout
        android:id="@+id/realtabcontent"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"/>

</LinearLayout>
</android.support.v4.app.FragmentTabHost>

我的输出为 ::

My Output is ::

• 点击设置页1 ----> 活动1 应显示。
• 点击选定的设置页1 （再次）------> 活动2 应显示。
• 点击选定的设置页1 （再次）对于第三次 ----> 活动 1 应显示再次。

• Click tab 1 ---- > Activity 1 should display.
• Click on selected tab 1 (again) ------> Activity 2 should display.
• Click on selected tab 1 (again) for third time ----> Activity 1 should display again.

类触发器自然

任何想法