android抽屉实现

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。

首先在layout 下设置xml布局文件

<?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>

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。

然后建立 chouti的activity类：

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;
		}

	}
}

loadApps方法是得到主界面上的图片和文字。

然后设置的自定义adapter中去。

看下运行后效果：

向上滑动imageview按钮后：

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。

评论

1 楼 hu_teye 2012-07-04  

运行报错了