Android 抽屉效果实现

     今天在手机上实现了抽屉效果，其实很简单，但是效果却很酷。               <br />    <br /> 首先在layout 下设置xml布局文件    <br />    <br />    <pre class="brush:xml; toolbar: true; auto-links: false;"><?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" >      <SlidingDrawer         android:id="@+id/sliding"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:content="@+id/allApps"         android:handle="@+id/imageViewIcon"         android:orientation="vertical" >          <GridView             android:id="@+id/allApps"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:background="@drawable/bk"             android:columnWidth="60dp"             android:gravity="center"             android:horizontalSpacing="10dp"             android:numColumns="auto_fit"             android:padding="10dp"             android:stretchMode="columnWidth"             android:verticalSpacing="10dp" />          <ImageView             android:id="@+id/imageViewIcon"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:src="@drawable/touch_handler" />     </SlidingDrawer>  </RelativeLayout></pre>        SlidingDrawer就是重要的抽屉控件 ，handle是抽屉的拖动按钮，content是抽屉中的内容。    <p>      然后建立 chouti的activity类：</p>    <pre class="brush:java; toolbar: true; auto-links: false;">import android.app.Activity; import android.content.Intent; import android.content.pm.ResolveInfo; import android.os.Bundle; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.GridView; import android.widget.ImageView; import android.widget.SlidingDrawer;  public class Chouti extends Activity {  private GridView gv;  private SlidingDrawer sd;  private ImageView iv;  private List<ResolveInfo> apps;   /** Called when the activity is first created. */  @Override  public void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.slidingdrawer);   loadApps();   gv = (GridView) findViewById(R.id.allApps);   sd = (SlidingDrawer) findViewById(R.id.sliding);   iv = (ImageView) findViewById(R.id.imageViewIcon);   gv.setAdapter(new GridAdapter());   sd.setOnDrawerOpenListener(new SlidingDrawer.OnDrawerOpenListener()// 开抽屉   {    @Override    public void onDrawerOpened() {     iv.setImageResource(R.drawable.touch_handler);// 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.touch_handler);// 响应关抽屉事件    }   });  }   private void loadApps() {   Intent intent = new Intent(Intent.ACTION_MAIN, null);   intent.addCategory(Intent.CATEGORY_LAUNCHER);    apps = getPackageManager().queryIntentActivities(intent, 0);  }   public class GridAdapter extends BaseAdapter {   public GridAdapter() {    }    public int getCount() {    // TODO Auto-generated method stub    return apps.size();   }    public Object getItem(int position) {    // TODO Auto-generated method stub    return apps.get(position);   }    public long getItemId(int position) {    // TODO Auto-generated method stub    return position;   }    public View getView(int position, View convertView, ViewGroup parent) {    // TODO Auto-generated method stub    ImageView imageView = null;    if (convertView == null) {     imageView = new ImageView(Chouti.this);     imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);     imageView.setLayoutParams(new GridView.LayoutParams(50, 50));    } else {     imageView = (ImageView) convertView;    }     ResolveInfo ri = apps.get(position);    imageView.setImageDrawable(ri.activityInfo      .loadIcon(getPackageManager()));     return imageView;   }   } }</pre>loadApps方法是得到主界面上的图片和文字。    <p></p>    <p>   然后设置的自定义adapter中去。</p>    <p>    看下运行后效果：</p>    <p>    <img title="Android 抽屉实现 " border="0" alt="Android 抽屉实现 " src="https://simg.open-open.com/show/480baeb902877acd945c8799dd8c05db.png" width="223" height="427" /></p>    <p>     向上滑动imageview按钮后：</p>    <p>   <img title="Android 抽屉实现 " border="0" alt="Android 抽屉实现 " src="https://simg.open-open.com/show/b9bbf047260fcdcf3b60ecbfaf630833.png" width="230" height="423" /></p>    <p>    </p>     为了体现更好的效果，可以用两张滑动图片，一张朝上的，一张朝下的。根据监听器做相应的切换。    <p></p>