package com.example.myactionbardemo2;import android.os.Bundle;import android.app.ActionBar;import android.app.Fragment;import android.app.ActionBar.Tab;import android.app.ActionBar.TabListener;import android.app.Activity;import android.app.FragmentTransaction;import android.content.Intent;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;//展示了actionbar的tab模式和list模式。public class MainActivity extends Activity {	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.activity_main);		ActionBar actionBar=getActionBar();		actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);		Tab tab1=actionBar.newTab();		tab1.setText("tab1");		//必须添加监听器，否则会报错		//MyTabListener的设置可以使每个tab使用自己的监听器，显示自己不同的fragment里的内容		tab1.setTabListener(new MyTabListener
    
     (MyFragment1.class, this,R.id.container));		Tab tab2=actionBar.newTab();		tab2.setText("tab1");		tab2.setTabListener(new MyTabListener
     
      (MyFragment2.class, this,R.id.container));		Tab tab3=actionBar.newTab();		tab3.setText("tab1");		tab3.setTabListener(new MyTabListener
      
       (MyFragment3.class, this,R.id.container));	    actionBar.addTab(tab1);	    actionBar.addTab(tab2);	    actionBar.addTab(tab3);	    	    Button button=(Button) findViewById(R.id.but);		button.setOnClickListener(new OnClickListener() {						@Override			public void onClick(View v) {				// TODO Auto-generated method stub				Intent intent=new Intent(getApplicationContext(), OtherActivity.class);				startActivity(intent);			}		});	}	class MyTabListener
       
         implements TabListener{		Class
        
          fragmentClass;		Activity activity;		int container;		Fragment fragment;		public MyTabListener(Class
         
           fragmentClass, Activity activity, int container) { super(); this.fragmentClass = fragmentClass; this.activity = activity; this.container = container; } @Override public void onTabReselected(Tab tab, FragmentTransaction ft) { // TODO Auto-generated method stub } @Override public void onTabSelected(Tab tab, FragmentTransaction ft) { // TODO Auto-generated method stub if (fragment==null) { //fragment.getName返回的是包名+各自fragment的名字 fragment=Fragment.instantiate(activity, fragmentClass.getName(),null); //把fragment加入到activity中，该fragment可以有界面（在onCreateView生成）,也可以返回空无界面 ft.add(container, fragment); }else { ft.attach(fragment); } } @Override public void onTabUnselected(Tab tab, FragmentTransaction ft) { // TODO Auto-generated method stub if (fragmentClass!=null) { ft.detach(fragment); } } /*actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST); ArrayList
          
            list=new ArrayList
           
            (); list.add("item1"); list.add("item2"); ArrayAdapter
            
              adapter=new ArrayAdapter
             
              (getApplicationContext(), android.R.layout.simple_list_item_1, list); actionBar.setListNavigationCallbacks(adapter, new OnNavigationListener() { @Override public boolean onNavigationItemSelected(int itemPosition, long itemId) { // TODO Auto-generated method stub switch (itemPosition) { case 0: Toast.makeText(getApplicationContext(), "item1",1000).show(); break; case 1: Toast.makeText(getApplicationContext(), "item2",1000).show(); break; } return true; } });*/ /*actionBar.setDisplayHomeAsUpEnabled(true); actionBar.setHomeButtonEnabled(false);*/ } }
             
            
           
          
         
        
       
      
     
    

package com.example.myactionbardemo2;import android.app.ActionBar;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.MenuItem;public class OtherActivity extends Activity {	@Override	protected void onCreate(Bundle savedInstanceState) {		// TODO Auto-generated method stub		super.onCreate(savedInstanceState);		setContentView(R.layout.other);		//当放回父activity时使用		ActionBar actionBar=getActionBar();		actionBar.setDisplayHomeAsUpEnabled(true);		//其单击处理事件在onOptionsItemSelected里。		actionBar.setHomeButtonEnabled(true);	}	@Override	public boolean onOptionsItemSelected(MenuItem item) {		// TODO Auto-generated method stub		switch (item.getItemId()) {		case android.R.id.home:			Intent intent=new Intent(this,MainActivity.class);			intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);			startActivity(intent);			break;		}		return true;	}}

当在actionbar的不同tab进行切换时，进行fragment的切换，xml代码如下

注意是在主界面布局中使用的framelayout标签进行fragment的生成切换。

源码链接：