[英]ionic3 change page data by `radio`
當我單擊“ 1月”表示“一月”時,我希望ion-grid
顯示一月的志願者數據。 console.log
已經獲得了正確的數據,但是ion-grid
沒有更新。
這是登錄Web瀏覽器
HTML頁面
<ion-header>
<ion-toolbar color="danger">
<ion-buttons>
<button ion-button navPop icon-only>
<ion-icon ios="ios-arrow-back" md="md-arrow-back"></ion-icon>
</button>
</ion-buttons>
<ion-buttons style="background: transparent;" end>
<button style="background: transparent;" (click)="doRadio()">月份選擇</button>
</ion-buttons>
<ion-title text-wrap>志願者評選</ion-title>
</ion-toolbar>
</ion-header>
<ion-content>
<ion-grid>
<ion-row>
<ion-col>
<ion-card (click)="goToVolunteerVoteDetail(volunteer)" style="width:26%" class="pin" *ngFor="let volunteers of volunteer">
<img src="{{volunteers.Preview_image1}}" height="100">
<div *ngIf="volunteers.title" class="volunteer-title">
<small>{{volunteers.title}}</small>
</div>
<div class="volunteer-title">{{volunteers.like_number}}分</div> <!-- 志願者評選頭像像素:505x505px -->
</ion-card>
</ion-col>
</ion-row>
</ion-grid>
</ion-content>
ts頁面
import { Component } from '@angular/core';
import { NavController, NavParams, ToastController, AlertController, ModalController } from 'ionic-angular';
import { NewsDataProvider } from '../../providers/news-data/news-data';
import { VolunteerVoteDetailPage } from '../volunteer-vote-detail/volunteer-vote-detail';
@Component({
selector: 'page-volunteer-vote',
templateUrl: 'volunteer-vote.html',
})
export class VolunteerVotePage {
volunteer:any;
volunteer1:any;
//volunteer2:any;
// testRadioOpen = false;
// testRadioResult: any;
constructor(
public navCtrl: NavController, public navParams: NavParams,
public newsData:NewsDataProvider,public toastCtrl: ToastController,
public alertCtrl: AlertController,public modalCtrl: ModalController
){
this.getVolunteerVote();
this.getVolunteerVote1();
//this.getVolunteerVote2();
}
getVolunteerVote(): Promise<any> {
return this.newsData.getVolunteerVote().then(data => {
this.volunteer = data;
});
}
getVolunteerVote1(): Promise<any> {
return this.newsData.getVolunteerVote1().then(data => {
this.volunteer1 = data;
});
}
// getVolunteerVote2(): Promise<any> {
// return this.newsData.getVolunteerVote2().then(data => {
// this.volunteer2 = data;
// });
// }
goToVolunteerVoteDetail(volunteerItem:any) {
this.navCtrl.push(VolunteerVoteDetailPage,{
volunteer:volunteerItem
});
}
doRadio() {
const alert = this.alertCtrl.create();
alert.setTitle('請選擇月份');
alert.addInput({
type: 'radio',
label: '1月',
value: this.volunteer1,
checked: true
});
// alert.addInput({
// type: 'radio',
// label: '2月',
// value: this.volunteer2
// });
alert.addButton({
text: '確認',
handler: (data: any) => {
console.log('Radio data:', data);
// this.testRadioOpen = false;
// this.testRadioResult = data;
}
});
alert.addButton('取消');
alert.present();
}
}
提供者頁面
getVolunteerVote() {
return new Promise(resolve => {
this.http.get('http').map(res => res.json().data).subscribe(data => {
this.data = data;
resolve(this.data);
});
});
}
getVolunteerVote1() {
return new Promise(resolve => {
this.http.get('http').map(res => res.json().data).subscribe(data => {
this.data = data;
resolve(this.data);
});
});
}
您總是在ngFor
遍歷volunteer
,但是單擊確認
按鈕后不會更改其值。
我建議您添加一個selectedVolunteer
字段,以保留選定月份的數據,並循環瀏覽以顯示選定的數據。 並在單擊確認
按鈕時替換其值。
<ion-card (click)="goToVolunteerVoteDetail(volunteer)" style="width:26%" class="pin" *ngFor="let volunteers of selectedVolunteer">
export class VolunteerVotePage {
selectedVolunteer: []; // keep selected data here
getVolunteerVote(): Promise<any> {
return this.newsData.getVolunteerVote().then(data => {
this.volunteer = data;
this.selectedVolunteer = data; // show January data be default;
});
}
doRadio() {
alert.addButton({
text: '確認',
handler: (data: any) => {
console.log('Radio data:', data);
this.selectedVolunteer = data;
}
});
alert.addButton('取消');
alert.present();
}
}
參考演示 。
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