26、获取软件信息（包括Lable和相应的应用程序的包名）

------------------------main.java-------------------------

package com.example.software;


import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;


import android.app.ProgressDialog;
import android.content.pm.ApplicationInfo;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.SimpleAdapter;
/**
 * 获取已经安装的软件名及其软件的包名，该包名可以被用来开启另一个应用程序
 * @author Administrator
 *
 */
public class MainActivity extends ActionBarActivity implements Runnable{


List<Map<String, Object>> list = null;
ListView itemlist = null;
private ProgressDialog pd;
@Override
public void onCreate(Bundle icicle) {  
        super.onCreate(icicle);  
setContentView(R.layout.activity_main);
setTitle("软件信息");
itemlist = (ListView) findViewById(R.id.itemlist);
        pd = ProgressDialog.show(this, "请稍候..", "正在收集你已经安装的软件信息...", true,
                false);
        Thread thread = new Thread(this);
        thread.start();
    }  

 
private void refreshListItems() {
list = fetch_installed_apps();
SimpleAdapter notes = new SimpleAdapter(this, list, R.layout.info_row,
new String[] {"name", "desc" }, new int[] {R.id.name,
R.id.desc });
itemlist.setAdapter(notes);
//设置actionBar的标题！！
setTitle("软件信息,已经安装"+list.size()+"款应用.");
}



public List fetch_installed_apps(){
        List<ApplicationInfo> packages = getPackageManager().getInstalledApplications(0);
list = new ArrayList<Map<String, Object>>(
packages.size());
Iterator<ApplicationInfo> l = packages.iterator();

while (l.hasNext()) {
Map<String, Object> map = new HashMap<String, Object>();
ApplicationInfo app = (ApplicationInfo) l.next();
String packageName = app.packageName;



            String label = "";
            try {
                label = getPackageManager().getApplicationLabel(app).toString();
            } catch (Exception e) {  
            Log.i("Exception",e.toString());
            }
    map = new HashMap<String, Object>();
      map.put("name", label);
    map.put("desc", packageName);
    list.add(map);
}
return list;
    }

@Override
public void run() {
    fetch_installed_apps();
     handler.sendEmptyMessage(0);
}

    private Handler handler = new Handler() {
        public void handleMessage(Message msg) {
            refreshListItems();
            pd.dismiss();
        }
    };
    
}

。。。。。。。。。。。。main.xml。。。。。。。。。。。。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">


<ListView 
   android:layout_width="fill_parent"
android:layout_height="fill_parent" 
android:id="@+id/itemlist" />
 
</LinearLayout>

。。。。。。。。。info_row.xml。。。。。。。。。。。。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/vw1"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:padding="4px"
    android:orientation="horizontal">    
  


   <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical">


        <TextView android:id="@+id/name"
            android:textSize="18sp"
            android:textStyle="bold"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"/>


        <TextView android:id="@+id/desc"
            android:textSize="14sp"
            android:layout_width="fill_parent"
            android:paddingLeft="20px"
            android:layout_height="wrap_content"/>


    </LinearLayout>


</LinearLayout>