在Ionic2中從模態檢索數據

Question

我有一個頁面有一個按鈕，一旦點擊就創建一個模式。

現在我想在我的模態中設置一個變量，並在模態關閉後使用該按鈕將其傳遞迴頁面。

這是我嘗試過（我刪除了樣板代碼）：在

modal.ts

myVar:string; 
    constructor(private navCtrl: NavController, private viewCtrl: ViewController) { 
    this.myVar = "Hello"; 

} 
// when modal is being closed 
onCancel(){ 
     this.viewCtrl.dismiss(this.myVar); 
    } 

pageWithButton.ts

varFromModal:string; 
    constructor(private navCtrl: NavController, private viewCtrl: ViewController) {} 

    // I get this error here: Error TS1068: Unexpected token. A constructor, method, accessor, or property was expected. 
    this.viewCtrl.onDismiss(data => { 
      this.varFromModal = data; 
     }); 

Answer 1

你不能寫代碼直接您的課程：

class YourClassName { 

    varFromModal:string; 
    constructor(private navCtrl: NavController, private viewCtrl: ViewController) {} 

    // YOU CANT WRITE CODE HERE !! 
    // PUT IT IN A FUNCTION OR CONSTRUCTOR OR WHEREVER .. 
    this.viewCtrl.onDismiss(data => { 
     this.varFromModal = data; 
    }); 
}