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 ;  
        }  
    }