Android TabHost与FragmentActivity

今天看了一篇介绍FragmentActivity的文章，模仿做了一下.。

MainActivity：

package com.tao.test;import android.os.Bundle;import android.app.Activity;import android.app.LocalActivityManager;import android.app.TabActivity;import android.content.Intent;import android.view.Menu;import android.widget.TabHost;public class MainActivity extends Activity {private TabHost tabHost;LocalActivityManager activityManager;// 在Activity中使用Tabhost必須要有LocalActivityManager物件來設定@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);tabHost = (TabHost) findViewById(android.R.id.tabhost);activityManager = new LocalActivityManager(MainActivity.this, false);activityManager.dispatchCreate(savedInstanceState);tabHost.setup(activityManager);tabHost.addTab(tabHost.newTabSpec("tab1").setIndicator("tab1").setContent(new Intent(MainActivity.this, FragmentActivity1.class)));tabHost.addTab(tabHost.newTabSpec("tab2").setIndicator("tab2").setContent(new Intent(MainActivity.this, FragmentActivity2.class)));}@Overrideprotected void onPause() {activityManager.dispatchPause(isFinishing());super.onPause();}@Overrideprotected void onResume() {activityManager.dispatchResume();super.onResume();}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.activity_main, menu);return true;}}

mainactivity的布局文件：

<?xml version="1.0" encoding="utf-8"?><TabHost xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@android:id/tabhost"    android:layout_width="fill_parent"    android:layout_height="fill_parent" >    <LinearLayout        android:layout_width="fill_parent"        android:layout_height="fill_parent"        android:orientation="vertical" >        <!-- 实现Tab标签的居底主要是通过设置属性 android:layout_weight="1" -->        <!-- 还要注意FrameLayout标签的位置，要写在TabWidget标签的前面 -->        <FrameLayout            android:id="@android:id/tabcontent"            android:layout_width="fill_parent"            android:layout_height="fill_parent"            android:layout_weight="1" />        <TabWidget            android:id="@android:id/tabs"            android:layout_width="fill_parent"            android:layout_height="wrap_content"            android:layout_alignParentBottom="true" />    </LinearLayout></TabHost>

FragmentActivity代码：

package com.tao.test;import android.os.Bundle;import android.support.v4.app.FragmentActivity;import android.support.v4.app.FragmentManager;import android.support.v4.app.FragmentTransaction;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;public class FragmentActivity2 extends FragmentActivity {FragmentManager fragmentManager;@Overrideprotected void onCreate(Bundle arg0) {super.onCreate(arg0);setContentView(R.layout.fragment_activity_2);Button button = (Button) findViewById(R.id.change);button.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {FragmentTransaction ft = getSupportFragmentManager().beginTransaction();ft.replace(R.id.secound_fragment, new Fragment1());ft.commit();}});}}

最后要在AndroidManifest.xml中加上 android:configChanges="orientation"