uniapp设置消息提醒（调用手机系统静音或铃声）

openSettings() {
   // #ifdef APP-PLUS
   uni.getSystemInfo({  
    success(res) {  
     if(res.platform == 'ios'){
      plus.runtime.openURL("app-settings://");
     } else if (res.platform == 'android'){
      var main = plus.android.runtimeMainActivity();  
      var Intent = plus.android.importClass("android.content.Intent");
      var mIntent = new Intent('android.settings.SOUND_SETTINGS');
      main.startActivity(mIntent);
     }
    }
   });
  },