ionic3自定義單選

import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';

@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})
export class HomePage {
  list=[{"key":"you","value":'優',"chek":true},{"key":"liang","value":'良',"chek":false},{"key":"cha","value":'差',"chek":false}];
  data={"key":"you","value":'優',"chek":true};
  constructor(public navCtrl: NavController) {

  }
   public  chekFun(i){
      let me=this;
      this.list.forEach(function(data,inde,array) {
        if(i==inde){
          data.chek=true;
          me.data=data;
        }else{
          data.chek=false
        }
      });
    }

  public submit(){
    console.log(this.data);
  }
}

　　

<ion-header>  <ion-navbar>    <ion-title>     自定義單選    </ion-title>  </ion-navbar></ion-header><ion-content padding>  <ion-grid text-center>    <ion-row style="font-size: 1.7em;">      <ion-col  col-4  *ngFor="let item of list,let i =index" (click)="chekFun(i)">{{item.value}}&nbsp; <ion-icon name="checkmark-circle"  [ngClass]="{'button-clear-ios-primary': item.chek,'button-clear-ios-my':!item.chek}"></ion-icon></ion-col>    </ion-row>  </ion-grid>  <button ion-button block (click)="submit()">提交</button></ion-content>