android 官方侧边栏布局

说到侧边栏，相信大家一定听过或者用过 slidingmenu ，这是目前很流行的一个开源控件。但 google 也发布了一个侧边栏的控件，而且使用起来简单方便。

下面以一个官方简单的例子说明：

布局文件如下：

<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:id="@+id/main_layout"

    android:layout_width= "fill_parent"

    android:layout_height= "fill_parent" >

<!--  页面内容-->

    <FrameLayout

        android:id="@+id/main_content"

        android:layout_width="fill_parent"

        android:layout_height="fill_parent" >

    </FrameLayout >

    <!-- 侧边栏的选项 -->

    <ListView

        android:id="@+id/left_drawer"

        android:layout_width="150dp"

        android:background="@android:color/background_dark"

        android:layout_height="fill_parent"

        android:layout_gravity="start" />

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

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.widget.DrawerLayout;
import android.util.Log;
import android.view.KeyEvent;
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 FragmentActivity {

     public DrawerLayout drawerLayout;// 侧边栏布局
     public ListView leftList;// 侧边栏内的选项
     public ArrayAdapter<String> arrayAdapter;
     private String[] items;

     @Override
     protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
          initViews();
     }

     // 初始化控件
     private void initViews() {
          drawerLayout = (DrawerLayout) findViewById(R.id.main_layout);
          items = getResources().getStringArray(R.array.left_array);
          leftList = (ListView) findViewById(R.id.left_drawer);
          arrayAdapter = new ArrayAdapter<String>(this, R.layout.list_item, items);
          leftList.setAdapter(arrayAdapter);
          leftList.setOnItemClickListener(itemListener);
          initFragments();

     }

     // 添加碎片
     private void initFragments() {
          FragmentManager manager = getSupportFragmentManager();
          FragmentTransaction transaction = manager.beginTransaction();
          DrawerFragment fragment = new DrawerFragment();
          // 设置在fragment中按钮来控制侧边栏的打开
          fragment.setDrawerLayout(drawerLayout, leftList);
          transaction.add(R.id.main_content, fragment);
          transaction.commit();
     }

     // 选项点击事件
     OnItemClickListener itemListener = new OnItemClickListener() {

          @Override
          public void onItemClick(AdapterView<?> arg0, View view, int position,
                    long arg3) {
               // TODO Auto-generated method stub
               // 设置Activity的标题，这里只是用来做一个测试，你可以在这里用来处理单击侧边栏的选项事件
               setTitle(items[position]);
               // 关闭侧边栏
               drawerLayout.closeDrawer(leftList);
          }

     };

     /*
     * (non-Javadoc)
     *
     * @see android.support.v4.app.FragmentActivity#onKeyDown(int,
     * android.view.KeyEvent)
     */
     @Override
     public boolean onKeyDown(int keyCode, KeyEvent event) {
          // TODO Auto-generated method stub
          // 使用menu键打开或关闭侧边栏
          if (keyCode == KeyEvent.KEYCODE_MENU) {

               if (drawerLayout.isDrawerOpen(leftList)) {
                    drawerLayout.closeDrawer(leftList);
               } else {
                    drawerLayout.openDrawer(leftList);
               }
          }
          return super.onKeyDown(keyCode, event);
     }

}

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.widget.DrawerLayout;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.Button;

public class DrawerFragment extends Fragment implements OnClickListener {

     public DrawerLayout layout;
     public View view;

     public DrawerFragment() {
          super();
          // TODO Auto-generated constructor stub
     }

     public void setDrawerLayout(DrawerLayout layout, View view) {
          this.layout = layout;
          this.view = view;
     }

     /*
     * (non-Javadoc)
     *
     * @see
     * android.support.v4.app.Fragment#onCreateView(android.view.LayoutInflater
     * , android.view.ViewGroup, android.os.Bundle)
     */
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
               Bundle savedInstanceState) {
          // TODO Auto-generated method stub
          View rootView = inflater.inflate(R.layout.fragment_layout, container,
                    false);
          Button openBtn = (Button) rootView.findViewById(R.id.open);
          openBtn.setOnClickListener(this);
          return rootView;
     }

     /*
     * (non-Javadoc)
     *
     * @see android.view.View.OnClickListener#onClick(android.view.View)
     */
     @Override
     public void onClick(View v) {
          // TODO Auto-generated method stub
          if (v.getId() == R.id.open) {
               //打开侧边栏
               if (!layout.isDrawerOpen(view)) {
                    layout.openDrawer(view);
               }
          }
     }
}