android UI进阶之android中隐藏的layout 抽屉的使用方法

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout  
  xmlns:android="http://schemas.android.com/apk/res/android" 
  android:layout_width="fill_parent" 
  android:layout_height="fill_parent"
>
  <TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello"
    android:textSize="20sp"
  />
  <SlidingDrawer 
    android:id="@+id/sd" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:handle="@+id/iv" 
    android:content="@+id/myContent" 
    android:orientation="vertical"
  >

在SlidingDrawer这个标签下android:handle：指示的就是抽屉的图片。android:content:指向的就是抽屉里面的布局。有了这个布局，其实一个抽屉就出来了。

下面我们看Chouti这个类的代码

public class Chouti extends Activity {

  private GridView gv;
  private SlidingDrawer sd;
  private ImageView iv;
  private int[] icons={R.drawable.browser,R.drawable.gallery,
                        R.drawable.camera,R.drawable.gmail,
                        R.drawable.music,R.drawable.market,
                        R.drawable.phone,R.drawable.messages,R.drawable.maps};
  private String[] items={"浏览器","图片","相机","时钟","音乐","市场","拨号","信息","地图"};

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        gv = (GridView)findViewById(R.id.myContent); 
        sd = (SlidingDrawer)findViewById(R.id.sd);
        iv=(ImageView)findViewById(R.id.iv);
        MyAdapter adapter=new MyAdapter(this,items,icons);//自定义MyAdapter来实现图标加item的显示效果
        gv.setAdapter(adapter);
        sd.setOnDrawerOpenListener(new SlidingDrawer.OnDrawerOpenListener()//开抽屉
        {
          @Override
          public void onDrawerOpened()
          {
            iv.setImageResource(R.drawable.close1);//响应开抽屉事件 ，把图片设为向下的
          }
        });
        sd.setOnDrawerCloseListener(new SlidingDrawer.OnDrawerCloseListener()
        {
          @Override
          public void onDrawerClosed()
          {
            iv.setImageResource(R.drawable.open1);//响应关抽屉事件
          }
        });
    }
}

下面是MyAdapter这个类的代码

public class MyAdapter extends BaseAdapter 
{ 
  private Context _ct;
  private String[] _items;
  private int[] _icons;

  public MyAdapter(Context ct,String[] items,int[] icons) //构造器
  {
    _ct=ct;
    _items=items;
    _icons=icons;
  }

  @Override
  public int getCount()
  {
    return _items.length;
  }

  @Override
  public Object getItem(int arg0)
  {
    return _items[arg0];
  }

  @Override
  public long getItemId(int position)
  {
    return position;
  }

  @Override
  public View getView(int position, View convertView, ViewGroup parent)
  {
    LayoutInflater factory = LayoutInflater.from(_ct);
    View v = (View) factory.inflate(R.layout.gv, null);//绑定自定义的layout
    ImageView iv = (ImageView) v.findViewById(R.id.icon);
    TextView tv = (TextView) v.findViewById(R.id.text);
    iv.setImageResource(_icons[position]);
    tv.setText(_items[position]);
    return v;
  }
}