<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 android:layout_width="match_parent" 
 android:layout_height="45dp" 
 android:background="@drawable/title_bar" > 
 <ImageButton 
  android:id="@+id/id_title_left_btn" 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:layout_centerVertical="true" 
  android:layout_marginLeft="3dp" 
  android:background="@drawable/showleft_selector" /> 
 <TextView 
  android:layout_width="fill_parent" 
  android:layout_height="fill_parent" 
  android:gravity="center" 
  android:text="我不是微信" 
  android:textColor="#fff" 
  android:textSize="20sp" 
  android:textStyle="bold" /> 
</RelativeLayout>

package com.zhy.zhy_fragments; 
import android.app.Fragment; 
import android.os.Bundle; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.view.ViewGroup; 
import android.widget.ImageButton; 
import android.widget.Toast; 
public class TitleFragment extends Fragment 
{ 
 private ImageButton mLeftMenu; 
 @Override 
 public View onCreateView(LayoutInflater inflater, ViewGroup container, 
   Bundle savedInstanceState) 
 { 
  View view = inflater.inflate(R.layout.fragment_title, container, false); 
  mLeftMenu = (ImageButton) view.findViewById(R.id.id_title_left_btn); 
  mLeftMenu.setOnClickListener(new OnClickListener() 
  { 
   @Override 
   public void onClick(View v) 
   { 
    Toast.makeText(getActivity(), 
      "i am an ImageButton in TitleFragment ! ", 
      Toast.LENGTH_SHORT).show(); 
   } 
  }); 
  return view; 
 } 
} 

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 android:layout_width="match_parent" 
 android:layout_height="match_parent" 
 android:orientation="vertical" > 
 <TextView 
  android:layout_width="fill_parent" 
  android:layout_height="fill_parent" 
  android:gravity="center" 
  android:text="使用Fragment做主面板" 
  android:textSize="20sp" 
  android:textStyle="bold" /> 
</LinearLayout> 

package com.zhy.zhy_fragments; 
import android.app.Fragment; 
import android.os.Bundle; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
public class ContentFragment extends Fragment 
{ 
 @Override 
 public View onCreateView(LayoutInflater inflater, ViewGroup container, 
   Bundle savedInstanceState) 
 { 
  return inflater.inflate(R.layout.fragment_content, container, false); 
 } 
} 

package com.zhy.zhy_fragments; 
import android.app.Activity; 
import android.os.Bundle; 
import android.view.Window; 
public class MainActivity extends Activity 
{ 
 @Override 
 protected void onCreate(Bundle savedInstanceState) 
 { 
  super.onCreate(savedInstanceState); 
  requestWindowFeature(Window.FEATURE_NO_TITLE); 
  setContentView(R.layout.activity_main); 
 } 
} 

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 xmlns:tools="http://schemas.android.com/tools" 
 android:layout_width="match_parent" 
 android:layout_height="match_parent" > 
 <fragment 
  android:id="@+id/id_fragment_title" 
  android:name="com.zhy.zhy_fragments.TitleFragment" 
  android:layout_width="fill_parent" 
  android:layout_height="45dp" /> 
 <fragment 
  android:layout_below="@id/id_fragment_title" 
  android:id="@+id/id_fragment_content" 
  android:name="com.zhy.zhy_fragments.ContentFragment" 
  android:layout_width="fill_parent" 
  android:layout_height="fill_parent" /> 
</RelativeLayout> 

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 xmlns:tools="http://schemas.android.com/tools" 
 android:layout_width="match_parent" 
 android:layout_height="match_parent" > 
 <fragment 
  android:id="@+id/id_fragment_title" 
  android:name="com.zhy.zhy_fragments.TitleFragment" 
  android:layout_width="fill_parent" 
  android:layout_height="45dp" /> 
 <include 
  android:id="@+id/id_ly_bottombar" 
  android:layout_width="fill_parent" 
  android:layout_height="55dp" 
  android:layout_alignParentBottom="true" 
  layout="@layout/bottombar" /> 
 <FrameLayout 
  android:id="@+id/id_content" 
  android:layout_width="fill_parent" 
  android:layout_height="fill_parent" 
  android:layout_above="@id/id_ly_bottombar" 
  android:layout_below="@id/id_fragment_title" /> 
</RelativeLayout>

package com.zhy.zhy_fragments; 
import android.app.Activity; 
import android.app.FragmentManager; 
import android.app.FragmentTransaction; 
import android.os.Bundle; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.view.Window; 
import android.widget.LinearLayout; 
public class MainActivity extends Activity implements OnClickListener 
{ 
 private LinearLayout mTabWeixin; 
 private LinearLayout mTabFriend; 
 private ContentFragment mWeixin; 
 private FriendFragment mFriend; 
 @Override 
 protected void onCreate(Bundle savedInstanceState) 
 { 
  super.onCreate(savedInstanceState); 
  requestWindowFeature(Window.FEATURE_NO_TITLE); 
  setContentView(R.layout.activity_main); 
  // 初始化控件和声明事件 
  mTabWeixin = (LinearLayout) findViewById(R.id.tab_bottom_weixin); 
  mTabFriend = (LinearLayout) findViewById(R.id.tab_bottom_friend); 
  mTabWeixin.setOnClickListener(this); 
  mTabFriend.setOnClickListener(this); 
  // 设置默认的Fragment 
  setDefaultFragment(); 
 } 
 private void setDefaultFragment() 
 { 
  FragmentManager fm = getFragmentManager(); 
  FragmentTransaction transaction = fm.beginTransaction(); 
  mWeixin = new ContentFragment(); 
  transaction.replace(R.id.id_content, mWeixin); 
  transaction.commit(); 
 } 
 @Override 
 public void onClick(View v) 
 { 
  FragmentManager fm = getFragmentManager(); 
  // 开启Fragment事务 
  FragmentTransaction transaction = fm.beginTransaction(); 
  switch (v.getId()) 
  { 
  case R.id.tab_bottom_weixin: 
   if (mWeixin == null) 
   { 
    mWeixin = new ContentFragment(); 
   } 
   // 使用当前Fragment的布局替代id_content的控件 
   transaction.replace(R.id.id_content, mWeixin); 
   break; 
  case R.id.tab_bottom_friend: 
   if (mFriend == null) 
   { 
    mFriend = new FriendFragment(); 
   } 
   transaction.replace(R.id.id_content, mFriend); 
   break; 
  } 
  // transaction.addToBackStack(); 
  // 事务提交 
  transaction.commit(); 
 } 
}

package com.zhy.zhy_fragments; 
import android.app.Fragment; 
import android.os.Bundle; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
public class FriendFragment extends Fragment 
{ 
 @Override 
 public View onCreateView(LayoutInflater inflater, ViewGroup container, 
   Bundle savedInstanceState) 
 { 
  return inflater.inflate(R.layout.fragment_friend, container, false); 
 } 
}