<?xml version="1.0" encoding="utf-8"?>  
    android:orientation="vertical" android:layout_width="fill_parent"  
    android:layout_height="fill_parent">>  
            android:layout_height="fill_parent" >  
  

<?xml version="1.0" encoding="utf-8"?>  
    android:layout_width="fill_parent" android:layout_height="50dip">  

            android:layout_height="fill_parent" >  
            android:layout_height="40dip">  
                    android:layout_height="wrap_content" android:text="AppLable : ">  
                    android:layout_toRightOf="@id/tvLabel" android:layout_height="wrap_content"  
            android:layout_marginLeft="3dip" android:text="Label" android:textColor="#FFD700">  
                    android:layout_height="wrap_content" android:layout_below="@id/tvLabel"   
            android:text="包名:">  
                    android:layout_height="wrap_content" android:layout_below="@id/tvAppLabel"  
            android:layout_alignLeft="@id/tvAppLabel" android:textColor="#FFD700">  
      
 

//自定义适配器类，提供给listView的自定义view
public class BrowseApplicationInfoAdapter extends BaseAdapter {

private List mlistAppInfo = null;

LayoutInflater infater = null;

public BrowseApplicationInfoAdapter(Context context,  List apps) {
infater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mlistAppInfo = apps ;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
System.out.println("size" + mlistAppInfo.size());
return mlistAppInfo.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return mlistAppInfo.get(position);
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(int position, View convertview, ViewGroup arg2) {
System.out.println("getView at " + position);
View view = null;
ViewHolder holder = null;
if (convertview == null || convertview.getTag() == null) {
view = infater.inflate(R.layout.browse_app_item, null);
holder = new ViewHolder(view);
view.setTag(holder);
} 
else{
view = convertview ;
holder = (ViewHolder) convertview.getTag() ;
}
AppInfo appInfo = (AppInfo) getItem(position);
holder.appIcon.setImageDrawable(appInfo.getAppIcon());
holder.tvAppLabel.setText(appInfo.getAppLabel());
holder.tvPkgName.setText(appInfo.getPkgName());
return view;
}

class ViewHolder {
ImageView appIcon;
TextView tvAppLabel;
TextView tvPkgName;

public ViewHolder(View view) {
this.appIcon = (ImageView) view.findViewById(R.id.imgApp);
this.tvAppLabel = (TextView) view.findViewById(R.id.tvAppLabel);
this.tvPkgName = (TextView) view.findViewById(R.id.tvPkgName);
}
}
}

public class MainActivity extends Activity implements OnItemClickListener {  

    private ListView listview = null;  

    private List mlistAppInfo = null;  

    @Override  
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.browse_app_list);  

        listview = (ListView) findViewById(R.id.listviewApp);  
        mlistAppInfo = new ArrayList();  
        queryAppInfo(); // 查询所有应用程序信息  
        BrowseApplicationInfoAdapter browseAppAdapter = new BrowseApplicationInfoAdapter(  
                this, mlistAppInfo);  
        listview.setAdapter(browseAppAdapter);  
        listview.setOnItemClickListener(this);  
    }  
    // 点击跳转至该应用程序  
    public void onItemClick(AdapterView<?> arg0, View view, int position,  
            long arg3) {  
        // TODO Auto-generated method stub  
        Intent intent = mlistAppInfo.get(position).getIntent();  
        startActivity(intent);  
    }  
    // 获得所有启动Activity的信息，类似于Launch界面  
    public void queryAppInfo() {  
        PackageManager pm = this.getPackageManager(); // 获得PackageManager对象  
        Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);  
        mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);  
        // 通过查询，获得所有ResolveInfo对象.  
        List resolveInfos = pm  
                .queryIntentActivities(mainIntent, PackageManager.MATCH_DEFAULT_ONLY);  
        // 调用系统排序 ， 根据name排序  
        // 该排序很重要，否则只能显示系统应用，而不能列出第三方应用程序  
        Collections.sort(resolveInfos,new ResolveInfo.DisplayNameComparator(pm));  
        if (mlistAppInfo != null) {  
            mlistAppInfo.clear();  
            for (ResolveInfo reInfo : resolveInfos) {  
                String activityName = reInfo.activityInfo.name; // 获得该应用程序的启动Activity的name  
                String pkgName = reInfo.activityInfo.packageName; // 获得应用程序的包名  
                String appLabel = (String) reInfo.loadLabel(pm); // 获得应用程序的Label  
                Drawable icon = reInfo.loadIcon(pm); // 获得应用程序图标  
                // 为应用程序的启动Activity 准备Intent  
                Intent launchIntent = new Intent();  
                launchIntent.setComponent(new ComponentName(pkgName,  
                        activityName));  
                // 创建一个AppInfo对象，并赋值  
                AppInfo appInfo = new AppInfo();  
                appInfo.setAppLabel(appLabel);  
                appInfo.setPkgName(pkgName);  
                appInfo.setAppIcon(icon);  
                appInfo.setIntent(launchIntent);  
                mlistAppInfo.add(appInfo); // 添加至列表中  
                System.out.println(appLabel + " activityName---" + activityName  
                        + " pkgName---" + pkgName);  
            }  
        }  
    }  
}

package com.qin.appsize;


import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import com.qin.appsize.AppInfo;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.ComponentName;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.IPackageStatsObserver;
import android.content.pm.PackageManager;
import android.content.pm.PackageStats;
import android.content.pm.ResolveInfo;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.RemoteException;
import android.text.format.Formatter;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;

public class MainActivity extends Activity implements OnItemClickListener{
    private static String TAG = "APP_SIZE";

private ListView listview = null;
private List mlistAppInfo = null;
LayoutInflater infater = null ; 
//全局变量，保存当前查询包得信息
private long cachesize ; //缓存大小
private long datasize  ;  //数据大小 
private long codesize  ;  //应用程序大小
private long totalsize ; //总大小
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.browse_app_list);
        listview = (ListView) findViewById(R.id.listviewApp);
mlistAppInfo = new ArrayList();
queryAppInfo(); // 查询所有应用程序信息
BrowseApplicationInfoAdapter browseAppAdapter = new BrowseApplicationInfoAdapter(
this, mlistAppInfo);
listview.setAdapter(browseAppAdapter);
listview.setOnItemClickListener(this);
    }
     // 点击弹出对话框，显示该包得大小
public void onItemClick(AdapterView<?> arg0, View view, int position,long arg3) {
        //更新显示当前包得大小信息
queryPacakgeSize(mlistAppInfo.get(position).getPkgName()); 

infater = (LayoutInflater) MainActivity.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View dialog = infater.inflate(R.layout.dialog_app_size, null) ;
TextView tvcachesize =(TextView) dialog.findViewById(R.id.tvcachesize) ; //缓存大小
TextView tvdatasize = (TextView) dialog.findViewById(R.id.tvdatasize)  ; //数据大小
TextView tvcodesize = (TextView) dialog.findViewById(R.id.tvcodesize) ; // 应用程序大小
TextView tvtotalsize = (TextView) dialog.findViewById(R.id.tvtotalsize) ; //总大小
//类型转换并赋值
tvcachesize.setText(formateFileSize(cachesize));
tvdatasize.setText(formateFileSize(datasize)) ;
tvcodesize.setText(formateFileSize(codesize)) ;
tvtotalsize.setText(formateFileSize(totalsize)) ;
//显示自定义对话框
AlertDialog.Builder builder =new AlertDialog.Builder(MainActivity.this) ;
builder.setView(dialog) ;
builder.setTitle(mlistAppInfo.get(position).getAppLabel()+"的大小信息为：") ;
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
dialog.cancel() ;  // 取消显示对话框
}

});
builder.create().show() ;
}
    public void  queryPacakgeSize(String pkgName) throws Exception{
    if ( pkgName != null){
    //使用放射机制得到PackageManager类的隐藏函数getPackageSizeInfo
    PackageManager pm = getPackageManager();  //得到pm对象
    try {
    //通过反射机制获得该隐藏函数
Method getPackageSizeInfo = pm.getClass().getDeclaredMethod("getPackageSizeInfo", String.class,IPackageStatsObserver.class);
    //调用该函数，并且给其分配参数 ，待调用流程完成后会回调PkgSizeObserver类的函数
    getPackageSizeInfo.invoke(pm, pkgName,new PkgSizeObserver());
} 
        catch(Exception ex){
        Log.e(TAG, "NoSuchMethodException") ;
        ex.printStackTrace() ;
        throw ex ;  // 抛出异常
        } 
    }
    }

    //aidl文件形成的Bindler机制服务类
    public class PkgSizeObserver extends IPackageStatsObserver.Stub{
        /*** 回调函数，
         * @param pStatus ,返回数据封装在PackageStats对象中
         * @param succeeded  代表回调成功
         */ 
@Override
public void onGetStatsCompleted(PackageStats pStats, boolean succeeded)
throws RemoteException {
// TODO Auto-generated method stub
   cachesize = pStats.cacheSize  ; //缓存大小
    datasize = pStats.dataSize  ;  //数据大小 
    codesize = pStats.codeSize  ;  //应用程序大小
    totalsize = cachesize + datasize + codesize ;
Log.i(TAG, "cachesize--->"+cachesize+" datasize---->"+datasize+ " codeSize---->"+codesize)  ;
}
    }
    //系统函数，字符串转换 long -String (kb)
    private String formateFileSize(long size){
    return Formatter.formatFileSize(MainActivity.this, size); 
    }
   // 获得所有启动Activity的信息，类似于Launch界面
public void queryAppInfo() {
PackageManager pm = this.getPackageManager(); // 获得PackageManager对象
Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
// 通过查询，获得所有ResolveInfo对象.
List resolveInfos = pm.queryIntentActivities(mainIntent, 0);
// 调用系统排序 ， 根据name排序
// 该排序很重要，否则只能显示系统应用，而不能列出第三方应用程序
Collections.sort(resolveInfos,new ResolveInfo.DisplayNameComparator(pm));
if (mlistAppInfo != null) {
mlistAppInfo.clear();
for (ResolveInfo reInfo : resolveInfos) {
String activityName = reInfo.activityInfo.name; // 获得该应用程序的启动Activity的name
String pkgName = reInfo.activityInfo.packageName; // 获得应用程序的包名
String appLabel = (String) reInfo.loadLabel(pm); // 获得应用程序的Label
Drawable icon = reInfo.loadIcon(pm); // 获得应用程序图标
// 为应用程序的启动Activity 准备Intent
Intent launchIntent = new Intent();
launchIntent.setComponent(new ComponentName(pkgName,activityName));
// 创建一个AppInfo对象，并赋值
AppInfo appInfo = new AppInfo();
appInfo.setAppLabel(appLabel);
appInfo.setPkgName(pkgName);
appInfo.setAppIcon(icon);
appInfo.setIntent(launchIntent);
mlistAppInfo.add(appInfo); // 添加至列表中
}
}
}
}

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