ionic3 带参数反向传值

实现带参数反向传值，要在push跳转的页面添加一个回调函数

push方式跳转

getData = (data) =>
{
  return new Promise((resolve, reject) => {
    console.log(data);

    this.data.industryTxt= data.name;
    this.data.industryId = data.id;
    resolve();
  });
};

/**
 * 页面跳转
 */
selectIndustry(tb:any) {
  this.navCtrl.push(SettingCategoryPage, {
    tb : tb,
    callback: this.getData
  });
}

SettingCategoryPage:(跳转到的页面)

public callback:any;
constructor(
    public navCtrl: NavController,
    public navParams: NavParams,
    public httpPost: HttpService
) {
  this.callback   = this.navParams.get('callback');
}

sendData(event: any): void
{
  this.callback(this.data).then(()=>{ this.navCtrl.pop() });
}

参考：https://www.jianshu.com/p/147f44e0fe80