读取手机上所有应用程序并显示（APP）

pd = ProgressDialog.show(getActivity(), "请稍候..", "正在收集软件信息...", true,false);
                Thread thread = new Thread(this);
                thread.start(); 

 @Override
 public void run() {

         if(mlistAppInfo==null){
             mlistAppInfo = new ArrayList<AppInfo>();
             queryAppInfo();
       }

         handler.sendEmptyMessage(0); 

 }
  private Handler handler = new Handler() {
         public void handleMessage(Message msg) {
            if(mlistAppInfo!=null&&mlistAppInfo.size()==1)
               {
                Intent intent = mlistAppInfo.get(0).getIntent();
                   startActivity(intent);
               }
               else if(mlistAppInfo!=null&&mlistAppInfo.size()>1){
            View appView=LayoutInflater.from(getActivity()).inflate(R.layout.yue_list_new, null);
            listview = (ListView) appView.findViewById(R.id.listview);  

               BrowseApplicationInfoAdapter browseAppAdapter = new BrowseApplicationInfoAdapter(
                       getActivity(), mlistAppInfo);
               listview.setAdapter(browseAppAdapter);
               listview.setOnItemClickListener(LvxingbaoFragment.this);  

               new AlertDialog.Builder(getActivity()).setView(appView).show();
               }
             pd.dismiss();
         }
     }; 

public void queryAppInfo() {
        PackageManager pm = getActivity().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<ResolveInfo> 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 appLabel = (String) reInfo.loadLabel(pm);

               String activityName = reInfo.activityInfo.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  

               // String activityName = reInfo.activityInfo.name; // 获得该应用程序的启动Activity的name  

//                System.out.println(appLabel + " activityName---" + activityName
//                        + " pkgName---" + pkgName);
            }
        }
    }

class BrowseApplicationInfoAdapter extends BaseAdapter {  

        private List<AppInfo> mlistAppInfo = null;  

        LayoutInflater infater = null;  

        public BrowseApplicationInfoAdapter(Context context,  List<AppInfo> 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.item_add_score, 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.add_score_app_img);
            this.tvAppLabel = (TextView) view.findViewById(R.id.add_score_app_name);
           // this.tvPkgName = (TextView) view.findViewById(R.id.tvPkgName);
        }
    }

    class AppInfo {  

        private String appLabel;    //应用程序标签
        private Drawable appIcon ;  //应用程序图像
        private Intent intent ;     //启动应用程序的Intent ，一般是Action为Main和Category为Lancher的Activity
        private String pkgName ;    //应用程序所对应的包名  

        public AppInfo(){}  

        public String getAppLabel() {
            return appLabel;
        }
        public void setAppLabel(String appName) {
            this.appLabel = appName;
        }
        public Drawable getAppIcon() {
            return appIcon;
        }
        public void setAppIcon(Drawable appIcon) {
            this.appIcon = appIcon;
        }
        public Intent getIntent() {
            return intent;
        }
        public void setIntent(Intent intent) {
            this.intent = intent;
        }
        public String getPkgName(){
            return pkgName ;
        }
        public void setPkgName(String pkgName){
            this.pkgName=pkgName ;
        }
    }