Ionic 2输入文本自动完成

Question

我正在使用离子2.

我有一个数组值.

我需要带有自动完成功能的输入文本.

Answer 1

1. 首先创建一个模态
2. 继续搜索该模态
3. 在该模态中选择列表后.
4. 关闭模态并将值绑定到输入.

例

在HTML中

<ion-item inset>
              <ion-label floating i18n>Gotram*</ion-label>
              <ion-input type="text" (focus)="selectGotram()" readonly [(ngModel)]="user.gotram" name="gotram" #gotram="ngModel" required></ion-input>
            </ion-item>

在组件中

selectGotram() {
  let data = { "title": "Gotram", "form": "show_autocomplete", "data": gotrams }
        let modal = this.modalCtrl.create(HelperComponent, data);
        modal.onDidDismiss(data => {
          if (data) {
            this.user.gotram = data;
          }
        });
        modal.present();
}

在辅助组件模态html中

 <ion-searchbar showCancelButton="true" (ionInput)="getItems($event)" (ionCancel)="clearItems($event)"></ion-searchbar>
    <ion-list radio-group [(ngModel)]="selected_item">
        <ion-item *ngFor="let item of data" (click)="selectedItem(item)">
          <ion-label>{{item}}</ion-label>
          <ion-radio [value]="item"></ion-radio>
        </ion-item>
        <ion-item *ngIf="data?.length ==0">
          <h2>no matched items</h2>
        </ion-item>
    </ion-list>

在辅助组件模态中

this.data = this.params.get('data');
 this.auto_complete = this.data;

  getItems(ev) {
    // set val to the value of the ev target
    var val = ev.target.value;
      console.log(val);
    // if the value is an empty string don't filter the items
    if (val && val.trim() != '') {
      this.data = this.auto_complete.filter((item) => {
        return (item.toLowerCase().indexOf(val.toLowerCase()) > -1);
      })
    }
     console.log(this.data);
  }
  clearItems(ev) {
    // set val to the value of the ev target
    var val = ev.target.value;
    console.log(val);
    // if the value is an empty string don't filter the items
    if (val && val.trim() != '') {
      this.data = this.auto_complete.filter((item) => {
        return (item.toLowerCase().indexOf(val.toLowerCase()) > -1);
      })
    }
  }
  selectedItem(item) {
    this.viewCtrl.dismiss(item);
  }