<button ion-button color="danger" class="button-block button-round-ios" (click)="myAlert()">alert提示</button>

import { Component } from '@angular/core';

import { AlertController } from 'ionic-angular';

@Component({

  selector: 'page-home',

  templateUrl: 'home.html'

})

export class HomePage {

  constructor(public navCtrl: NavController,public alertCtrl: AlertController,public toastCtrl: ToastController) {

  }

  myAlert(){

    let myalert=this.alertCtrl.create({});

      myalert.setTitle('项目分类列表');

      myalert.addButton('OK');

    myalert.present();

  }

}