public class MainTabActivity extends Activity {private TabHost mHost;// 在Activity中使用Tabhost必須要有LocalActivityManager物件來設定
    LocalActivityManager lam;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);// main layout採用預設的TabhostmHost = (TabHost) findViewById(android.R.id.tabhost);lam = new LocalActivityManager(MainTabActivity.this, false);lam.dispatchCreate(savedInstanceState);mHost.setup(lam);mHost.addTab(mHost.newTabSpec("Tab1").setIndicator("Tab1").setContent(new Intent(MainTabActivity.this, FragmentActivity1.class)));mHost.addTab(mHost.newTabSpec("Tab2").setIndicator("Tab2").setContent(new Intent(MainTabActivity.this, FragmentActivity2.class)));}@Overrideprotected void onPause() {// 漏掉這行一定出錯
        lam.dispatchPause(isFinishing());super.onPause();}@Overrideprotected void onResume() {// 漏掉這行一定出錯
        lam.dispatchResume();super.onResume();}
}

public class FragmentActivity1 extends FragmentActivity {public static FragmentManager fm;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.fragment_activity_1);fm = getSupportFragmentManager();// 只當容器，主要內容已Fragment呈現initFragment(new Fragment1());}// 切換Fragmentpublic static void changeFragment(Fragment f){changeFragment(f, false);}// 初始化Fragment(FragmentActivity中呼叫)public static void initFragment(Fragment f){changeFragment(f, true);}private static void changeFragment(Fragment f, boolean init){FragmentTransaction ft = fm.beginTransaction();ft.replace(R.id.simple_fragment, f);if(!init)ft.addToBackStack(null);ft.commit();}
}

public class Fragment1 extends Fragment {@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {View v = inflater.inflate(R.layout.fragment_1, container, false);Button tv = (Button)v.findViewById(R.id.button2);tv.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// 直接呼叫FragmentActivity1的靜態方法來做切換FragmentActivity1.changeFragment(new Fragment2());}});return v;}
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical"android:id="@+id/simple_fragment">
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical"><Buttonandroid:id="@+id/button2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="Button" />
</LinearLayout>