我如何阻止alertController再次打开

Question

我已经建立了一种将自定义文本插入到离子选择多重中的方法。我使用警报框将自定义测试插入选择数组，并在关闭警报框时在输入字段中输入。一切正常，除了将数据插入输入字段后，警报框将再次打开。.如何确保异步inputCustomValuesMulti仅运行一次。

html

<ion-item class="ion-text-wrap">
    <ion-label position="stacked">{{fromItem.Question}}</ion-label>
    <ion-select multiple="true" #c (ionChange)="selectChangedMulti(c.value, i)" name="{{fromItem.name}}" [(ngModel)]="fromItem.input">
        <ion-select-option *ngFor="let item of importQuestions[i].values" value="{{item.value}}" >{{ item.value }}</ion-select-option>
    </ion-select>
</ion-item>

ts

selectChangedMulti(selectedValue: string[], index: string ) {
  this.index = index;
  if (selectedValue.includes("other")) {
    this.inputCustomValuesMulti(selectedValue);
  } else {
  this.currentValue = selectedValue;
  };
};

async inputCustomValuesMulti(selectedValue) {
    const inputAlert = await this.alertController.create({
    header: 'Enter your custom text:',
    inputs: [ { type: 'text', placeholder: 'type in' } ],
    buttons: [ { text: 'Cancel' }, { text: 'Ok' } ]
    });
    await inputAlert.present();
    await inputAlert.onDidDismiss().then((data) => {
    let customValueName: string = data.data.values[0]; 
    if (customValueName) {
        let indexFound = this.importQuestions[this.index].values.findIndex((item: string) => item === customValueName)
        if (indexFound === -1) {
        this.importQuestions[this.index].values.push({value: customValueName});
        let importQuestion = selectedValue;
        importQuestion.push(customValueName);
        let passData = importQuestion;
        let newArray = Array.from(passData);
        // inserts new text into input field
        this.importQuestions[this.index].input = newArray; 
        } else {
        console.log("else");
        };
    }; 
    })
};

Answer 1

let passData = importQuestion.filter(e => e !== "other");

现在方法不再在ionChange上看到“其他”。