Ionic 2 Slides LOCK

Question

I would like to lock the sliding feature (by swiping the screen) it should only work when i click the button.

Since im pretty new to typescript i can't explain how i should get this to work. I found some docs on the ionic page.

"lockSwipes(shouldLockSwipes)" I think this is the code i need but i have no clue how i can include it into my IonicApp.

HTML

<ion-slide>
  <ion-item>
    <img src="img/question.png (click)="goToSlide1()">
  </ion-item>
</ion-slide>

<ion-slide>
  <ion-item>
    <img src="img/clue.png (click)="goToSlide2()">
  </ion-item>
</ion-slide>

<ion-slide>
  <ion-item>
    <img src="img/answer.png (click)="Finish()">
  </ion-item>
</ion-slide>

TS

        import {Component} from '@angular/core';
        import {NavController} from 'ionic-angular';
        import {Finish} from '../finish/finish';
        import { Slides } from 'ionic-angular';
        import { ViewChild } from '@angular/core';


        @Component({
            templateUrl: 'build/pages/slider/slider.html'
        })
        export class Slider {
            @ViewChild(Slides) slides: Slides;
            value = '';
            changeText(value: string) { this.value = value; }
            constructor(private navController: NavController) {

            goToSlide1() {
                this.slides.slideTo(1, 500);
            }
            goToSlide2() {
                this.slides.slideTo(2, 500);
            }
            goToFinish() {
                this.navController.setRoot(Finish);
            }
    }
}

I hope someone can help me out! Thanks.

Answer 1

Let's start from the begin.

First of all your HTML should look something like this:

<ion-slides>
    <ion-slide>
    <ion-item>
        <img src="img/question.png (click)="goToSlide1()">
    </ion-item>
    </ion-slide>

    <ion-slide>
    <ion-item>
        <img src="img/clue.png (click)="goToSlide2()">
    </ion-item>
    </ion-slide>

    <ion-slide>
    <ion-item>
        <img src="img/answer.png (click)="Finish()">
    </ion-item>
    </ion-slide>
</ion-slides>

Then in your TS file you should use the ngAfterViewInit hook, because ViewChild components will be ready here and not before.

So your TS should look like this:

import {Component} from '@angular/core';
import {NavController} from 'ionic-angular';
import {Finish} from '../finish/finish';
import { Slides } from 'ionic-angular';
import { ViewChild } from '@angular/core';


@Component({
    templateUrl: 'build/pages/slider/slider.html'
})
export class Slider {
    @ViewChild(Slides) slides: Slides;
    value = '';
    changeText(value: string) { this.value = value; }

    constructor(private navController: NavController) {
    }

    ngAfterViewInit() {
        // child is set
        this.slides.lockSwipes(true);
    }

    goToSlide1() {
        this.slides.slideTo(1, 500);
    }

    goToSlide2() {
        this.slides.slideTo(2, 500);
    }

    goToFinish() {
        this.navController.setRoot(Finish);
    }    
}

Check the angular 2 hooks

That will do the job, happy coding.