How can I add the new android chips dynamically in Android?

Question

I have a class called Question which contains a String array of tags. I'm trying to show every question in a Recyclerview using Kotlin and every tag in a new chip. These chips will be included inside a ChipGroup.

My question is:

How can I add every tag element of the array into a new Chip? I'm trying to do this but It's obviously not working.

if (tags != null) {
    for (tag in tags) {
        val chip = Chip(itemView.context)
    }
}

Is this your entire code so far? You're not adding the new `Chip` instances to a parent `View` anywhere. It's also half Kotlin and half Java. — zsmb13, May 23 '18 at 17:48

score 46 · Accepted Answer · edited Nov 09 '21 at 05:12

46

You can add Chips the same way as any other ViewGroup like so:

for (index in tags.indices) {
  val chip = Chip(chipGroup.context)
  chip.text= "Item ${tags[index]}"

  // necessary to get single selection working
  chip.isClickable = true
  chip.isCheckable = true
  chipGroup.addView(chip)
}

for singleSelection don't forget to add to your chipGroup:

chipGroup.isSingleSelection = true

or in xml

app:singleSelection="true"

edited Nov 09 '21 at 05:12

Nimantha

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answered Jun 12 '18 at 18:00

kandroidj

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14

@Choletski the question was asked in kotlin so it was answered in kotlin. The same thing can be applied for Java. It should be a very straightforward change – kandroidj Dec 03 '18 at 13:16
@kandroidj How to get selected value of dynamic chips – Vinodh Kumar Dec 05 '19 at 04:45
@kandroidj How to change background color of the chip and stroke color dynamically ? – Yesha Shah May 24 '23 at 09:41

score 5 · Answer 2 · answered Aug 03 '19 at 15:22

I always got the following error when trying to create a new Chip:

IllegalArgumentException: This component requires that you specify a valid android:textAppearance attribute

This could be fixed by instead inflating a custom R.layout.chip with the following line: android:textAppearance="@style/TextAppearance.MaterialComponents.Chip"

How can I add the new android chips dynamically in Android?

2 Answers2

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