如何打開 MatDialog 並傳遞 MatDialogRef

Question

我正在開發一個 angular 應用程序。 我嘗試使用 MatDialog 打開一個對話框並嘗試將其關閉

我以這種方式打開對話框

openDialog(event) {
  const dialogConfig = new MatDialogConfig();
  dialogConfig.disableClose = true;
  dialogConfig.autoFocus = true;
  dialogConfig.position = {
    top:  bottom + 'px',
    right: '0px'
  };
  dialogConfig.width = '50%';
  dialogConfig.height = '590px';

  this.dialog.open(UserDialogComponent, dialogConfig);

  const dialogRef = this.dialog.open(UserDialogComponent, dialogConfig);

  dialogRef.beforeClose().subscribe((result: string) => {
    console.log('RIght before close,', result);
  });
  dialogRef.afterClosed().subscribe(result => {
    console.log('The dialog was closed', result);
  });
}

我在 UserDialogComponent 的構造函數中注入 MatDialogRef：

constructor(
    private formBuilder: FormBuilder,
    private dialogRef: MatDialogRef<UserDialogComponent>,
    @Inject(MAT_DIALOG_DATA) data) {
      console.log("Constructor UserDialogComponent START");
      console.log(dialogRef);
      this.dialogRef = dialogRef;
      console.log("Constructor UserDialogComponent END");
     }

並關閉對話框，我使用這個 function

  close() {
    console.log(this.dialogRef);
    console.log('CLOSE CLICKED');
    this.dialogRef.close(true);
  }

但是 this.dialogRef 是一個空的 object 並且當我調用這個 function 時收到以下錯誤

ERROR TypeError: "this.dialogRef.close is not a function"

你可以幫幫我嗎？

Answer 1

你讓我步入正軌

有這個代碼

@Component({
  selector: 'app-user-dialog',
  templateUrl: './user-dialog.component.html',
  styleUrls: ['./user-dialog.component.scss'],
  providers: [
    {provide: MAT_RADIO_DEFAULT_OPTIONS, useValue: { color: 'accent' }},
    { provide: MatDialogRef, useValue: {} }
  ]
})
export class UserDialogComponent implements OnInit {

我刪除了

{ provide: MatDialogRef, useValue: {} }

現在它工作正常

Answer 2

刪除this.dialogRef = dialogRef; 並嘗試

 @Inject(MAT_DIALOG_DATA) data) {
      console.log("Constructor UserDialogComponent START");
      console.log(dialogRef);
      this.dialogRef = dialogRef; // delete this line
      console.log("Constructor UserDialogComponent END");
     }