点击通知后，Ionic无法导航到特定选项卡？

Question

我正在使用Ionic和FCM（firebase）插件发送推送通知。我可以收到通知，当我点击通知时，它会成功触发警报，但不会导航到指定的选项卡。只是为了确保这条线：

this.tab.select(2); 

作品我已经测试与一个按钮，代码导航和它的作品

 FCMPlugin.onNotification(function(data){ 
    if(data.wasTapped){ 
     //Notification was received on device tray and tapped by the user. 

    alert('data was tapped'); 
     this.tab.select(2); 
      //this.navCtrl.push(ViewurgentnewsPage); also tried this 

    }else{ 
     //Notification was received in foreground. Maybe the user needs to be notified. 

     alert('this was received on foreground'); 


    } 
    }); 

Answer 1

您应该使用箭头功能

FCMPlugin.onNotification((data) => { 
    if(data.wasTapped){ 
     //Notification was received on device tray and tapped by the user. 
     alert('data was tapped'); 
     this.tab.select(2); 
    } else { 
     //Notification was received in foreground. Maybe the user needs to be notified. 
     alert('this was received on foreground'); 
    } 
    }); 

通过使用箭头功能，this关键字仍然引用组件代码，其中this.tab属性存在。