android抽屜效果的實現

 抽屜效果的實現主要依靠SlidingDrawer控件，下面爲xml代碼

 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <SlidingDrawer
        android:id="@+id/slidingDrawer1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal"
        android:content="@+id/content"
        android:handle="@+id/handle" >

        <Button
            android:id="@+id/handle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Handle" />

        <LinearLayout
            android:id="@+id/content"
            android:layout_width="match_parent"
            android:layout_height="match_parent" >
            <GridView android:id="@+id/gridview"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:numColumns="4"></GridView>
        </LinearLayout>
    </SlidingDrawer>

</LinearLayout>

下面爲java代碼：

 

package com.example.chouti;

import java.util.List;

import android.os.Bundle;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.TextView;

public class MainActivity extends Activity {
    GridView gridView;
    List<ResolveInfo> mAppInfos;
    Context context;
    private PackageManager packageManager;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        gridView=(GridView) findViewById(R.id.gridview);
        getApp();
        GridItemAdapter adapter=new GridItemAdapter(context,mAppInfos);
        gridView.setAdapter(adapter);

        gridView.setOnItemClickListener(new OnItemClickListener() {
            //點擊進入相關應用
            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                    long arg3) {
                // TODO Auto-generated method stub
                ResolveInfo resolveInfo=mAppInfos.get(arg2);
                //獲得包名和class名
                String pkn=resolveInfo.activityInfo.packageName;
                String cln=resolveInfo.activityInfo.name;
                //已知某應用的包名跟類名後，啓動該特定的應用
                Intent intent=new Intent();
                ComponentName componentName=new ComponentName(pkn, cln);
                intent.setComponent(componentName);
                startActivity(intent);
            }
        });
    }
    private void getApp() {
        // TODO Auto-generated method stub
    //包管理器
    packageManager=getPackageManager();
    Intent intent=new Intent(Intent.ACTION_MAIN);
    intent.addCategory(Intent.CATEGORY_LAUNCHER);
    mAppInfos=packageManager.queryIntentActivities(intent, 0);
    }

    class GridItemAdapter extends BaseAdapter{
        Context context;
        List<ResolveInfo> mAppInfos;

    public GridItemAdapter(Context context, List<ResolveInfo> mAppInfos) {
            super();
            this.context = context;
            this.mAppInfos = mAppInfos;
        }

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return mAppInfos.size();
    }

    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub

        ResolveInfo resolveInfo=mAppInfos.get(position);
        LayoutInflater layoutInflater=getLayoutInflater();
        View convertView1=layoutInflater.inflate(R.layout.item, null);
        ImageView p_w_picpathView=(ImageView)convertView1.findViewById(R.id.p_w_picpathView1);
        TextView textView=(TextView)convertView1. findViewById(R.id.textView1);
        p_w_picpathView.setImageDrawable(resolveInfo.loadIcon(packageManager));
        textView.setText(resolveInfo.loadLabel(packageManager));
        return convertView1;

    }
}

}

效果圖