角度材料2步进器-下一步

import {Component, ViewChild} from '@angular/core';
import {MatStepper} from '@angular/material';
import {FormBuilder, FormGroup, Validators} from '@angular/forms';

/**
 * @title Stepper overview
 */
@Component({
  selector: 'stepper-overview-example',
  templateUrl: 'stepper-overview-example.html',
  styleUrls: ['stepper-overview-example.css']
})
export class StepperOverviewExample {
  isLinear = true;
  firstFormGroup: FormGroup;

  @ViewChild('stepper') stepper: MatStepper;

  constructor(private _formBuilder: FormBuilder) { }

  ngOnInit() {
    this.firstFormGroup = this._formBuilder.group({
      firstCtrl: ['', Validators.required]
    });

    this.firstFormGroup.statusChanges.subscribe(
            status => {
              if (status === 'VALID') {
                this.stepper.next();
              }
        console.log(status);
      }
    )
  }
}