The focus() function fails to execute properly in Vue for NativeScript when v-for is used

One of the challenges I'm facing involves setting focus on the first textfield when a button is pressed.

I found a code snippet in the playground without using v-for and it works perfectly fine.

However, as soon as I introduce v-for into the code, everything crashes. I tried another example in the playground with v-for, and the program crashes when the button is pressed.

I am unable to pinpoint where I went wrong and how to fix this issue to make the code function correctly.

<template>
    <Page>
        <ActionBar title="Home" />
        <ScrollView>
            <StackLayout class="home-panel">
                <Label textWrap="true" text="Test focus()!"
                    class="h2 description-label" />

                <TextField v-for="(item, index) in array"
                    v-model="array[index]" :key="'key'+index"
                    :ref="'ref' + index" />

                <Button text="Button" @tap="onButtonTap" />
            </StackLayout>
        </ScrollView>
    </Page>
</template>

<script>
    export default {
        methods: {
            onButtonTap() {
                console.log("Button was pressed");
                this.$refs["ref0"].nativeView.focus();
            }
        },

        data() {
            return {
                array: ["Hello", "World!"]
            };
        }
    };
</script>

Answer №1

When utilizing the v-for directive, it is possible to set a fixed ref and retrieve elements by their index.

<InputField v-for="(element, idx) in myList"
     v-model="myList[idx]" :key="'item'+idx" ref="inputRef" />

  .....

  onClick() {
     console.log("Button clicked");
     this.$refs.inputRef[0].nativeView.focus();
  }

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