Setting Focus to an Input in Ionic

Ionic Framework ionic-v3
22

Cool, Im gonna look into that, hoping that will take the animation time into acount. thnx, will post what I find here for reference

23

Yup, thats what i just thought! whether the event is fired before, during or after the transition! let us know!!
cheers!

24

Did you manage to find the solution?

25

hi, I am using ionic 3… I tried both solutions but it didn’t work, any advice ! thanx … the element ref method shows error cannot read property 'focus' of null TypeError

26

For people using WKWebView and having the focus issue, take a look at https://www.npmjs.com/package/cordova-plugin-wkwebview-inputfocusfix.

27

Thanks friend for your help its work to me

28

yes it didn’t work for me. I also get this error cannot read property ‘focus’ of null TypeError

29

There is NavController.isTransitioning(), not really a callback, but can be checked and used to delay actions until a transition is complete. In my experience though (Ionic 3.6.1), the setTimeout is required for setting input focus, but can use a 0 millisecond delay (which is the default if omitted). As I understand it, this is needed to queue an operation and trigger Angular change detection. I put it inside an ionViewDidEnter hook. There are also some Angular Lifecycle Hooks available, which might be more appropriate in certain cases.

1 Like
30

after that how do I move focus to next elemnt,sine the cursor is stuck there!

31

I found this possible solution:

.html

<ion-content>
  <ion-list>
    <ion-item>
      <ion-label>Name</ion-label>
      <ion-input #inputRef type="text"></ion-input>
    </ion-item>
    <button ion-button (click)="focusMyInput(inputRef)">Focus</button>
  </ion-list>
</ion-content>

.ts

import {Content} from 'ionic-angular';

@ViewChild(Content) content: Content;

  focusMyInput(inputRef) {

    let itemTop = inputRef._elementRef.nativeElement.getBoundingClientRect().top;
    let itemPositionY = this.content.getContentDimensions().scrollTop + itemTop -80;
   
    this.content.scrollTo(null, itemPositionY, 500, () => {
      inputRef.setFocus();
    });

  }

But you have to make sure you have enough space to scroll at bottom. Tested on iOS 11

1 Like
32

Content is not defined error

33

Make sure to “import {Content} from ‘ionic-angular’;” at the top of your .ts file. And of course your content musst be placed between tags.

I’ve edited my post.

1 Like
34

In my case, for some reason, ionViewLoaded() was not getting triggered. Tried ionViewDidLoad() and set the timer to 200 and it worked.

150 proved too early for me. Complete Solution:

import { Component, ViewChild } from '@angular/core';//No need to import Input

export class HomePage {

  @ViewChild('inputToFocus') inputToFocus;
  constructor(public navCtrl: NavController) {}

  ionViewDidLoad()
  {
    setTimeout(() => {
      this.inputToFocus.setFocus();
    },200)
  }  
}

And on the input tag:

<ion-input type="text" #inputToFocus></ion-input>

2 Likes
35

The best solution. Works great for me too! =) But in my case I used set.Blur() method for my own purposes.

1 Like
36

I found a solution as a Directive

import { Directive, Renderer, ElementRef} from '@angular/core';
 
@Directive({ 
    selector: '[focuser]' // Attribute selector
})
export class Focuser {

    constructor(private renderer:Renderer,
                private elementRef:ElementRef) {
    }

    ngAfterViewInit() { 
        // we need to delay our call in order to work with ionic ...
        setTimeout(() => {
            const element = this.elementRef.nativeElement.querySelector('input');
            this.renderer.invokeElementMethod(element, 'focus', []);
        }, 1000);
    }   
}

add to app.module

import { Focuser } from "../directives/focuser/focuser";

@NgModule({
  declarations: [ ... 
                         Focuser  ]

use the directive.

<ion-input focuser . . . >

1 Like
37

Does it work in mobile iOS safari?

38

Make sure to upload : cordova-plugin-ionic-webview

39

Hey Blaydator,
I am having the same issue here and couldn’t make input field focus on iPhone (Keyboard doesn’t appear too). Do you have a solution on this?

40

Mine is a little different.
On ios 10,
Using the old webkit
preference name=“CordovaWebViewEngine” value=“CDVUIWebViewEngine”

Trying to do a wizard in a modal. After a couple of screens we have a form for the users address. What is strange on iphone 7 with ios 10 the zip code (last value in the from) is what gets focused.

How can I change that to get focus on the first input?

41

I found that the solution provided by alchibaucha works, but I had to significantly increase the delay. So mine now works when it’s set to 600.

import { Component, ViewChild } from '@angular/core';//No need to import Input

export class HomePage {

  @ViewChild('inputToFocus') inputToFocus;
  constructor(public navCtrl: NavController) {}

  ionViewDidLoad()
  {
    setTimeout(() => {
      this.inputToFocus.setFocus();
    },600)
  }  
}