Android侧滑菜单之DrawerLayout用法详解

<pre name="code" class="java"><android.support.v4.widget.DrawerLayout
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:id="@+id/drawer_layout"
   android:layout_width="match_parent"
   android:layout_height="match_parent">
  <!--The main content view 抽屉关闭时候的主视图-->
  <FrameLayout 
    android:id="@+id/content_frame"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    >
  </FrameLayout>
  <!-- The Navigation view 左侧拉开之后的导航视图 -->
  <ListView 
    android:id="@+id/left_drawer"
    android:layout_width="240dp"
    android:layout_height="match_parent"
    android:layout_gravity="start" //从左往右滑出菜单，如果为end就是从右往左滑出菜单
    android:background="#ffffcc"
    android:choiceMode="singleChoice"
    android:divider="@android:color/transparent"
    android:dividerHeight="0dp"
    ></ListView>
</android.support.v4.widget.DrawerLayout>

public class MainActivity extends Activity implements OnItemClickListener{
 private DrawerLayout mDrawerLayout;
 private ListView mListView;
 private ArrayList<String> menuList;//数据
 private ArrayAdapter<String> adapter;//适配器
// private ActionBarDrawerToggle mDrawerToggle;
// private String mTitle;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 // mTitle=(String) getTitle();
 mDrawerLayout=(DrawerLayout) findViewById(R.id.drawer_layout);
 mListView=(ListView) findViewById(R.id.left_drawer);
 menuList=new ArrayList<String>();
 for(int i=0;i<5;i++)
  menuList.add("刘家威"+i);
 adapter=new ArrayAdapter<String>(this,
  android.R.layout.simple_list_item_1,menuList);
 mListView.setAdapter(adapter);

<?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:id="@+id/tv"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:textSize="25sp"/>
</LinearLayout>

package com.example.drawerlayout;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
public class ContentFragment extends Fragment {
 private TextView tv;
 @Override
 public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 View view=inflater.inflate(R.layout.fragment_content,container,false);
 tv=(TextView) view.findViewById(R.id.tv);
 String text=getArguments().getString("text"); //获取到传入的值
 tv.setText(text); 
 return view;
 }
}

@Override
 public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
 //在FrameLayout里动态插入一个Fragment
      Fragment contentFragment=new ContentFragment();   //创建碎片实例
      Bundle args=new Bundle(); //让每个碎片都携带参数，初始化为Bundle类型
      args.putString("text", menuList.get(position)); //参数put进入String类型的值，传入当前点击的菜单项的值
      contentFragment.setArguments(args); //让碎片携带上参数
      FragmentManager fm=getFragmentManager(); 
      fm.beginTransaction().replace(R.id.content_frame,contentFragment ).commit(); //开启事务，向容器内加入碎片，最后提交事务
    mDrawerLayout.closeDrawer(mListView); //进入碎片界面时关闭掉抽屉的内容
 }

mDrawerToggle=new ActionBarDrawerToggle(this, mDrawerLayout,
  R.string.drawer_open,R.string.drawer_close){
  @Override
  public void onDrawerOpened(View drawerView) {
  super.onDrawerOpened(drawerView);
  getActionBar().setTitle("请选择");
  invalidateOptionsMenu();//重绘actionBar上的菜单项,执行这个方法的时候会回调onPreareOptionsMenu()
  }
  @Override
  public void onDrawerClosed(View drawerView) {
  super.onDrawerClosed(drawerView);
  getActionBar().setTitle(mTitle);
  invalidateOptionsMenu();
  }
 };
 mDrawerLayout.setDrawerListener(mDrawerToggle);

<menu xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
tools:context="com.example.drawerlayout.MainActivity" >
<item
  android:id="@+id/websearch"
  android:icon="@drawable/action_search"
  android:showAsAction="ifRoom|withText"
  android:title="webSearch"
  />
</menu>

 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
 getMenuInflater().inflate(R.menu.main, menu);
 return super.onCreateOptionsMenu(menu);
 }

/*给actionBar的webSearch设置点击事件*/
 @Override
 public boolean onOptionsItemSelected(MenuItem item) {
 switch (item.getItemId()) {
 case R.id.websearch:
  Intent intent=new Intent();
  intent.setAction("android.intent.action.VIEW");
  intent.setData(Uri.parse("http://www.baidu.com"));
  startActivity(intent);
  break;
 default:
  break;
 }
 return super.onOptionsItemSelected(item);
 }

 @Override
 public boolean onPrepareOptionsMenu(Menu menu) {
  /*在这里通过判断DrawerLayout是打开还是关闭，来判断是否显示actionBar的webSearch图标*/
 boolean isDrawerOpen=mDrawerLayout.isDrawerOpen(mListView);
 menu.findItem(R.id.websearch).setVisible(!isDrawerOpen); //如果DrawerLayout是关闭的就显示actionBar里的webSearch
 return super.onPrepareOptionsMenu(menu);
 }

 //开启actionBar的APP icon的功能
 getActionBar().setDisplayHomeAsUpEnabled(true);
 getActionBar().setHomeButtonEnabled(true);

 @Override
 public boolean onOptionsItemSelected(MenuItem item) {
 //将ActionBar上的图标与Drawer结合起来
 if(mDrawerToggle.onOptionsItemSelected(item)){
  return true;
 }
       .......
}

 @Override
 protected void onPostCreate(Bundle savedInstanceState) {
 //将ActionBarDrawerToggle与DrawerLayout同步起来
 //将ActionBarDrawerToggle中的Drawer图标设置为ActionBar里的Home_Button的图标
 mDrawerToggle.syncState();
 super.onPostCreate(savedInstanceState);
 }
  //这个方法用来监测手机状态的变化，比如横屏竖屏的切换
 @Override
 public void onConfigurationChanged(Configuration newConfig) {
 mDrawerToggle.onConfigurationChanged(newConfig);
 super.onConfigurationChanged(newConfig);
 }