android 获取另一个apk的信息

 /**
  * @return all local plaugins 
  */
 private List<PlauginInfo> findLocalPlugins(){
  PackageManager pm=getPackageManager();
  //List<PackageInfo> pkgs=pm.getInstalledPackages(PackageManager.GET_UNINSTALLED_PACKAGES);
  Intent mainIntent = new Intent("com.android.uxun", null); 
  List<ResolveInfo> allApps=getPackageManager().queryIntentActivities(mainIntent, 0);
  Log.i(TAG, "======allApps.size()==="+allApps.size());
  sLoaclPlugins.clear();
  for(ResolveInfo resolveInfo:allApps){
   String packageName=resolveInfo.activityInfo.packageName;
   ApplicationInfo applicationInfo=resolveInfo.activityInfo.applicationInfo;
   String label=pm.getApplicationLabel(applicationInfo).toString();
   PlauginInfo plug=new PlauginInfo();
   Context context=null;
   try {
    context = createPackageContext(packageName,Context.CONTEXT_IGNORE_SECURITY);
    if(context!=null){
    plug.classId=context.getSharedPreferences("plaugin",MODE_WORLD_READABLE+MODE_WORLD_WRITEABLE).getInt("plauginId",0);
    }
   } catch (NameNotFoundException e) {
    e.printStackTrace();
   }
   plug.description="";
   Drawable drawable=pm.getApplicationIcon(applicationInfo);
   if(drawable!=null){
    plug.icon=((BitmapDrawable)drawable).getBitmap(); 
   }
   plug.intent=new Intent(packageName);
   plug.itemType=0;
   plug.openCount=0;
   plug.postFlag=0;
   plug.title=label;
   int versionCode=0;
   try {
    versionCode = pm.getPackageInfo(packageName,0).versionCode;
   } catch (NameNotFoundException e) {
    e.printStackTrace();
   }
   plug.versionId=versionCode;
   sLoaclPlugins.add(plug);
  }
  /*for(PackageInfo pkg :pkgs){
   if("android.uxun".equals(pkg.sharedUserId)){
    String packageName=pkg.packageName;
    //String prcessName=pkg.applicationInfo.processName;
    String label=pm.getApplicationLabel(pkg.applicationInfo).toString();
    PlauginInfo plug=new PlauginInfo();
    Context context=null;
    try {
     context = createPackageContext(packageName,Context.CONTEXT_IGNORE_SECURITY);
     if(context!=null){
     plug.classId=context.getSharedPreferences("plaugin",MODE_WORLD_READABLE+MODE_WORLD_WRITEABLE).getInt("plauginId",0);
     }
    } catch (NameNotFoundException e) {
     e.printStackTrace();
    }
    plug.description="";
    Drawable drawable=pm.getApplicationIcon(pkg.applicationInfo);

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