模仿添加QQ好友桌面快捷方式

 /**
      *
      * @param context
      * @param tname 桌面快捷方式的名字
      * @param icon 好友头像
      */
     public static void addShortCut(Context context, String tname, int icon) {
         // 安装的Intent
         Intent shortcut = new Intent("com.android.launcher.action.INSTALL_SHORTCUT");

         // 快捷名称
         shortcut.putExtra(Intent.EXTRA_SHORTCUT_NAME, tname);
         // 快捷图标是允许重复
         shortcut.putExtra("duplicate", false);

         Intent shortcutIntent = new Intent(Intent.ACTION_MAIN);
         shortcutIntent.putExtra("tName", tname);
         shortcutIntent.setClassName("com.example.qqshortcut", "com.example.qqshortcut.MainActivity");
         shortcutIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
         shortcut.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);

         // 快捷图标
         ShortcutIconResource iconRes = Intent.ShortcutIconResource.fromContext(context, icon);
         shortcut.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, iconRes);

         // 发送广播
         context.sendBroadcast(shortcut);
     }

 /**
      * 判断是否已存在该快捷方式
      * @param context
      * @param name 快捷方式的名字
      * @return
      */
     public static boolean hasShortcut(Context context,String name)
     {
         String authority = getAuthorityFromPermission(context,"permission.READ_SETTINGS");
         boolean isInstallShortcut = false;
         try {
             ContentResolver cr = context.getContentResolver();
             String url;
             if (authority == null) {
                 int systemversion = Integer.parseInt(android.os.Build.VERSION.SDK);
                 /*大于8的时候在com.android.launcher2.settings 里查询（未测试）*/
                 if(systemversion < 8){
                     url = "content://com.android.launcher.settings/favorites?notify=true";
                 }else{
                     url = "content://com.android.launcher2.settings/favorites?notify=true";
                 }
             }else{
                 url = "content://" + authority + "/favorites?notify=true";
             }
             Cursor c = cr.query(Uri.parse(url),null,"title=?",
                     new String[] {name}, null);
             if(c!=null && c.moveToFirst()){
                 c.close();
                 isInstallShortcut = true ;
             }
         } catch (Exception e) {
             e.printStackTrace();
         }
         return isInstallShortcut ;
     }

 /**
      * 动态获取查询的provider（provider跟SDK版本和厂商有关系，会有所不同），获取provider后，记得在androidManifeset.xml加上对应的权限
      * 不同厂商com.android.launcher.permission.READ_SETTINGS权限不同，目前做兼容只能把目前知道的权限都加到配置文件里
      * @param context
      * @param permission
      * @return
      */
     public static String getAuthorityFromPermission(Context context, String permission){
         try {
             if (permission == null) return null;
             List<PackageInfo> packs = context.getPackageManager().getInstalledPackages(PackageManager.GET_PROVIDERS);
             if (packs != null) {
                 for (PackageInfo pack : packs) {
                     ProviderInfo[] providers = pack.providers;
                     if (providers != null) {
                         for (ProviderInfo provider : providers) {
                             Log.e("------", "\r\n【" + provider.readPermission + "】\r\n");
                             if (provider.readPermission!=null && provider.readPermission.endsWith(permission)) {
                                 return provider.authority;
                             }
                         }
                     }
                 }
             }
         } catch (Exception e) {
             e.printStackTrace();
         }
         return null;
     }