onAttach(Activity)

onCreateView(LayoutInflater, ViewGroup,Bundle)

onActivityCreated(Bundle)

onDestoryView()

onDetach()

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemasandroidcom/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 comzhyzhy_fragments; 
 
import androidappFragment; 
import androidosBundle; 
import androidviewLayoutInflater; 
import androidviewView; 
import androidviewViewOnClickListener; 
import androidviewViewGroup; 
import androidwidgetImageButton; 
import androidwidgetToast; 
 
public class TitleFragment extends Fragment 
{ 
 
  private ImageButton mLeftMenu; 
 
  @Override 
  public View onCreateView(LayoutInflater inflater, ViewGroup container, 
      Bundle savedInstanceState) 
  { 
    View view = inflaterinflate(Rlayoutfragment_title, container, false); 
    mLeftMenu = (ImageButton) viewfindViewById(Ridid_title_left_btn); 
    mLeftMenusetOnClickListener(new OnClickListener() 
    { 
      @Override 
      public void onClick(View v) 
      { 
        ToastmakeText(getActivity(), 
            "i am an ImageButton in TitleFragment ! ", 
            ToastLENGTH_SHORT)show(); 
      } 
    }); 
    return view; 
  } 
} 

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemasandroidcom/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 androidappFragment; 
import androidosBundle; 
import androidviewLayoutInflater; 
import androidviewView; 
import androidviewViewGroup; 
 
public class ContentFragment extends Fragment 
{ 
 
  @Override 
  public View onCreateView(LayoutInflater inflater, ViewGroup container, 
      Bundle savedInstanceState) 
  { 
    return inflaterinflate(Rlayoutfragment_content, container, false); 
  } 
 
} 

package com.zhy.zhy_fragments; 
 
import androidappActivity; 
import androidosBundle; 
import androidviewWindow; 
 
public class MainActivity extends Activity 
{ 
 
  @Override 
  protected void onCreate(Bundle savedInstanceState) 
  { 
    superonCreate(savedInstanceState); 
    requestWindowFeature(WindowFEATURE_NO_TITLE); 
    setContentView(Rlayoutactivity_main); 
  } 
 
} 

<RelativeLayout xmlns:android="http://schemasandroidcom/apk/res/android" 
  xmlns:tools="http://schemasandroidcom/tools" 
  android:layout_width="match_parent" 
  android:layout_height="match_parent" > 
 
  <fragment 
    android:id="@+id/id_fragment_title" 
    android:name="comzhyzhy_fragmentsTitleFragment" 
    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="comzhyzhy_fragmentsContentFragment" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" /> 
 
</RelativeLayout> 

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
  xmlns:tools="http://schemasandroidcom/tools" 
  android:layout_width="match_parent" 
  android:layout_height="match_parent" > 
 
  <fragment 
    android:id="@+id/id_fragment_title" 
    android:name="comzhyzhy_fragmentsTitleFragment" 
    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 androidappActivity; 
import androidappFragmentManager; 
import androidappFragmentTransaction; 
import androidosBundle; 
import androidviewView; 
import androidviewViewOnClickListener; 
import androidviewWindow; 
import androidwidgetLinearLayout; 
 
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) 
  { 
    superonCreate(savedInstanceState); 
    requestWindowFeature(WindowFEATURE_NO_TITLE); 
    setContentView(Rlayoutactivity_main); 
 
    // 初始化控件和声明事件 
    mTabWeixin = (LinearLayout) findViewById(Ridtab_bottom_weixin); 
    mTabFriend = (LinearLayout) findViewById(Ridtab_bottom_friend); 
    mTabWeixinsetOnClickListener(this); 
    mTabFriendsetOnClickListener(this); 
 
    // 设置默认的Fragment 
    setDefaultFragment(); 
  } 
 
  private void setDefaultFragment() 
  { 
    FragmentManager fm = getFragmentManager(); 
    FragmentTransaction transaction = fmbeginTransaction(); 
    mWeixin = new ContentFragment(); 
    transactionreplace(Ridid_content, mWeixin); 
    transactioncommit(); 
  } 
 
  @Override 
  public void onClick(View v) 
  { 
    FragmentManager fm = getFragmentManager(); 
    // 开启Fragment事务 
    FragmentTransaction transaction = fmbeginTransaction(); 
 
    switch (vgetId()) 
    { 
    case Ridtab_bottom_weixin: 
      if (mWeixin == null) 
      { 
        mWeixin = new ContentFragment(); 
      } 
      // 使用当前Fragment的布局替代id_content的控件 
      transactionreplace(Ridid_content, mWeixin); 
      break; 
    case Ridtab_bottom_friend: 
      if (mFriend == null) 
      { 
        mFriend = new FriendFragment(); 
      } 
      transactionreplace(Ridid_content, mFriend); 
      break; 
    } 
    // transactionaddToBackStack(); 
    // 事务提交 
    transactioncommit(); 
  } 
 
} 

package com.zhy.zhy_fragments; 
 
import androidappFragment; 
import androidosBundle; 
import androidviewLayoutInflater; 
import androidviewView; 
import androidviewViewGroup; 
 
public class FriendFragment extends Fragment 
{ 
 
  @Override 
  public View onCreateView(LayoutInflater inflater, ViewGroup container, 
      Bundle savedInstanceState) 
  { 
    return inflaterinflate(Rlayoutfragment_friend, container, false); 
  } 
 
} 

getFragmentManager() // v4中，getSupportFragmentManager

FragmentTransaction transaction = fm.benginTransatcion();//开启一个事务

transaction.add()