How to create array by providing size in Kotlin

Question

I have the following method in java and works well in my code. But I just want to rewrite my activity to kotlin. My java methods:

private void testFunction() {
    ImageView[] pics;
    int count = 6;

    pics = new ImageView[count];
}

By converting it automatically with Android studio the following fun is produced but with error:

private fun testFunction() {
    val pics: Array<ImageView>
    val count = 6

    pics = arrayOfNulls(count)
}

How can I archive the same result?

Error

CommonsWare · Accepted Answer · 2019-01-19 21:51:07Z

2

private fun testFunction() {
    val pics: Array<ImageView?> = arrayOfNulls(6)

    // TODO the rest of your test
}

answered Jan 19, 2019 at 21:51

CommonsWare

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Comments

Willi Mentzel · Accepted Answer · 2019-01-20 14:42:57Z

1

Or even shorter:

val pics = arrayOfNulls<ImageView?>(6)

This takes advantage of Kotlin's type inference and avoids redundancy.

answered Jan 20, 2019 at 9:29

Willi Mentzel

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