如何在angular material datepicker中更改日期格式？

const MY_FORMATS = {
  parse: {
    dateInput: 'YYYY/MM/DD',
  },
  display: {
    dateInput: 'YYYY/MM/DD',
    monthYearLabel: 'YYYY MMM',
    dateA11yLabel: 'LL',
    monthYearA11yLabel: 'MMMM YYYY',
  },
};

import { DateAdapter, MAT_DATE_FORMATS } from '@angular/material';

constructor(private dateAdapter: DateAdapter<Date>) { }

ngOnInit() {
  this.dateAdapter.setLocale('en-US'); // 设置日期适配器的区域设置
  this.dateAdapter.setDateFormat(MY_FORMATS); // 设置日期适配器的日期格式
}

<mat-form-field>
  <input matInput [matDatepicker]="picker" [matDatepickerParse]="MY_FORMATS.parse.dateInput">
  <mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
  <mat-datepicker #picker></mat-datepicker>
</mat-form-field>