如何在静态屏幕尺寸上动态更改 Angular5 中的 fxFlex 值? [英] How to dynamically change fxFlex value in Angular5 on a static screen-size?

问题描述

我有如下两列，我想在单击按钮时动态交换/更改 fxFlex 值.我知道如果您调整屏幕大小，fxFlex.md/lg 等将启动我能够完成的工作.但我试图了解如何在按钮单击等事件中更改静态屏幕大小上的 fxFlex 值.

<div fxFlex="fxFlexForCol1" style="background-color: green"><button mat-raised-button (click)="swapViewableArea()">点击放大查看{{fxFlexForCol1}}</button>
<div fxFlex="fxFlexForCol2" style="background-color: red"><button mat-raised-button (click)="swapViewableArea()">点击放大查看{{fxFlexForCol2}}</button>

 swapViewableArea() {const temp = this.fxFlexForCol1;this.fxFlexForCol1 = this.fxFlexForCol2;this.fxFlexForCol2 = 温度；}

单击按钮时，我看到 fxFlexForCol1 和 fxFlexForCol2 值交换了，但 flexLayout 在 UI 布局中没有反映相同

请提供任何建议.

解决方案

您需要将 fxFlex 绑定到您的属性.

用 [fxFlex]="property" 替换 fxFlex

I have two columns as below and I wanted to dynamically swap/change fxFlex value onClick of a button. I know that if you resize screen, fxFlex.md/lg etc will kick-in which I was able to accomplish. But am trying to understand how to change the fxFlex values on a static screen-size on some event like button-click.

<div flexLayout="row">
  <div fxFlex="fxFlexForCol1" style="background-color: green">
    <button mat-raised-button (click)="swapViewableArea()">Click to enlarge view {{fxFlexForCol1}}</button>
  </div>
  <div fxFlex="fxFlexForCol2" style="background-color: red">
      <button mat-raised-button (click)="swapViewableArea()">Click to enlarge view {{fxFlexForCol2}}</button>
    </div>

  swapViewableArea() {
    const temp = this.fxFlexForCol1;
    this.fxFlexForCol1 = this.fxFlexForCol2;
    this.fxFlexForCol2 = temp;
  }

On button-click I see that fxFlexForCol1 and fxFlexForCol2 values are swapped but flexLayout doesn't reflect the same in the UI-layout

Any advise please.

解决方案

You need to bind fxFlex to your property.

Replaced fxFlex with [fxFlex]="property"

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