Android抽屉菜单DrawerLayout的实现案例

浏览数：91 / 时间：2015年06月11日

（1）项目布局文件
activity_main.xml

<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 -->

    <FrameLayout
        android:id="@+id/content_frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >
    </FrameLayout>

    <!-- The navigation view -->

    <ListView
        android:id="@+id/left_drawer"
        android:layout_width="240dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:background="#ffffcc"
        android:choiceMode="singleChoice"
        android:divider="@android:color/transparent"
        android:dividerHeight="0dp" >
    </ListView>

</android.support.v4.widget.DrawerLayout>

fragment_content.xml

<?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/textView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="25sp" />

</LinearLayout>

（2）主要类文件

package com.xuliugen.drawerlayout;

import java.util.ArrayList;

import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.content.Intent;
import android.content.res.Configuration;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class MainActivity extends Activity implements OnItemClickListener {

    private DrawerLayout mDrawerLayout; // 设置的是左侧的抽屉菜单
    private ListView mDrawerList;
    private ArrayList<String> menuLists;
    private ArrayAdapter<String> adapter;
    private ActionBarDrawerToggle mDrawerToggle;// actionBar打开关闭的
    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);
        mDrawerList = (ListView) findViewById(R.id.left_drawer);
        menuLists = new ArrayList<String>();
        for (int i = 0; i < 5; i++) {
            menuLists.add("item" + i);
        }
        // 初始化适配器
        adapter = new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1, menuLists);
        // 为左侧的抽屉设置了数据
        mDrawerList.setAdapter(adapter);

        // 左侧滑动菜单的监听事件
        mDrawerList.setOnItemClickListener(this);

        // 设置抽屉被打开关闭的对象
        mDrawerToggle = new ActionBarDrawerToggle(this, //
                mDrawerLayout,//
                R.drawable.ic_drawer,//
                R.string.drawer_open,//
                R.string.drawer_close) {
            // 被打开的时候
            @Override
            public void onDrawerOpened(View drawerView) {
                super.onDrawerOpened(drawerView);
                getActionBar().setTitle("请选择"); // 设置actionBar的文字
                invalidateOptionsMenu(); // Call onPrepareOptionsMenu()
            }

            // 被关闭的时候
            @Override
            public void onDrawerClosed(View drawerView) {
                super.onDrawerClosed(drawerView);
                getActionBar().setTitle(mTitle);
                invalidateOptionsMenu();// 重新绘制actionBar上边的菜单项
            }
        };

        // 设置滑动菜单的 打开关闭事件
        mDrawerLayout.setDrawerListener(mDrawerToggle);

        // 开启ActionBar上APP ICON的功能：点击打开和点击关闭7
        getActionBar().setDisplayHomeAsUpEnabled(true);
        getActionBar().setHomeButtonEnabled(true);

    }

    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        boolean isDrawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
        menu.findItem(R.id.action_websearch).setVisible(!isDrawerOpen);
        return super.onPrepareOptionsMenu(menu);
    }

    /**
     * 菜单项的设置
     */
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    /**
     * 设置actionBar上边图标的点击事件
     */
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // 将ActionBar上的图标与Drawer结合起来
        if (mDrawerToggle.onOptionsItemSelected(item)) {
            return true;
        }
        switch (item.getItemId()) {
        case R.id.action_websearch:
            Intent intent = new Intent();
            intent.setAction("android.intent.action.VIEW");
            Uri uri = Uri.parse("http://blog.csdn.net/xlgen157387");
            intent.setData(uri);
            startActivity(intent);
            break;
        }
        return super.onOptionsItemSelected(item);
    }

    /**
     * 根据官方文档提示的信息
     * 
     * 将mDrawerToggle.syncState();放入到onPostCreate中
     */
    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        // 需要将ActionDrawerToggle与DrawerLayout的状态同步
        // 将ActionBarDrawerToggle中的drawer图标，设置为ActionBar中的Home-Button的Icon
        mDrawerToggle.syncState();
    }

    /**
     * 当屏幕发生选装的时候也需要进行相应的设置
     */
    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        mDrawerToggle.onConfigurationChanged(newConfig);
    }

    /**
     * 监听事件的实现
     * 
     * 
     * 当点击菜单栏中的item的时候切换相应的fragment界面
     */
    @Override
    public void onItemClick(AdapterView<?> arg0, View arg1, int position,
            long arg3) {
        // 动态插入一个Fragment到FrameLayout当中
        Fragment contentFragment = new ContentFragment();
        Bundle bundle = new Bundle();
        bundle.putString("text", menuLists.get(position));
        contentFragment.setArguments(bundle);

        // fragment创建好了之后需要交给fragmentManager来替换到相应的视图中
        FragmentManager fm = getFragmentManager();
        fm.beginTransaction().replace(R.id.content_frame, contentFragment)
                .commit();

        mDrawerLayout.closeDrawer(mDrawerList);
    }

}

ContentFragment.java

package com.xuliugen.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;

/**
 * 用于填充界面的fragment
 * 
 * @author xuliugen
 * 
 */
public class ContentFragment extends Fragment {

    private TextView textView;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {

        View view = inflater.inflate(R.layout.fragment_content, container,false);
        textView = (TextView) view.findViewById(R.id.textView);

        // 获得传入的参数
        String text = getArguments().getString("text"); 
        textView.setText(text);

        return view;
    }

}