packageManager

•    查询出所有ap中的信息(查看所有Intent.Action_Main的)

        final Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
        mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
  final List<ResolveInfo> apps = packageManager.queryIntentActivities(mainIntent, 0)//获取到所有Intent中信息以ResolveInfo返回

 for (int i = 0; i < count; i++) {

                final ResolveInfo info = apps.get(i);//get the list of apps

                final ActivityInfo activityInfo = info.activityInfo;//get the ActivityInfo

 

            }