无法更改 Angular2 Material MatChip 选择状态 [英] Can't change Angular2 Material MatChip selected state

问题描述

如何更改MatChip 选定的属性?我不想点击选择/取消选择芯片(它也必须改变芯片颜色.)我试过的:

How to change MatChip selected property? I wan't on click to select/deselect chip (also it have to change chip color.) What I tried:

html:

<mat-chip-list>
   <mat-chip *ngFor="let label of item.labels" 
             #lbl (click)="selectChip(lbl)">
      {{label}}
   </mat-chip>
</mat-chip-list>

ts:

selectChip(item: MatChip) {
   item.selected ? item.deselect() : item.select();
}

点击它会抛出

ERROR TypeError: item.select 不是函数

ERROR TypeError: item.select is not a function

如何解决?

推荐答案

没有 select() 或 deselect() 方法，只有选中的 getter 和 setter 函数，所以你可以这样解决:

There isn't a select() or deselect() method, there is just the selected getter and setter functions, so you can solve it like this:

selectChip(item: MatChip) {
   item.selected = !item.selected;
}

希望这会有所帮助.

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