HTML

<mat-nav-list>
    <mat-list-item (click)="onOpenMenu(menu)" *ngFor="let i of data">
        <div mat-line>
            {{ i.name }}
        </div>
        <p mat-line>
            {{ i.email }}
        </p>
        <button mat-icon-button [matMenuTriggerFor]="menu">
            <mat-icon>more_vert</mat-icon>
        </button>
    </mat-list-item>
    <mat-menu #menu="matMenu">
        <button mat-menu-item>View profile</button>
        <button mat-menu-item>Add contact</button>
    </mat-menu>
</mat-nav-list>

TS

onOpenMenu(menu: any): void {
   // menu doesn't have any openMenu() function 
   // which is of course not a trigger object but a menu itself.
   console.log(menu);
}

我一直试图看看这个更接近我情况的issue on github.但在我的情况下,我有一个动态的项目列表,我想每次点击打开一个菜单.

DEMO