How to set different ids' for dynamic buttons programmatically? (Kotlin)

Question

I have a button (add) that creates new buttons when pressed (up to 8). But when I try to refer to these buttons and add functionality, I am unable to find the ids' for them. How could I make and find ids' for these buttons?

Note: the button ids should be created automatically when (add) is pressed.

val LLayout: View = layout
    var currentId = 0


    add.setOnClickListener {
        val addedButton = Button(this)
        addedButton.text = written.text.toString()
        addedButton.id = currentId++
        addedButton.layoutParams = LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT)
        (LLayout as LinearLayout).addView(addedButton)
        //clearing text from EditText written
        written.text.clear()
    }

already asked stackoverflow.com/a/3217786/9181430

Rohit Kumar
– Rohit Kumar

2021-06-16 03:46:43 +00:00
Commented Jun 16, 2021 at 3:46 — Rohit Kumar
– Rohit Kumar, Commented Jun 16, 2021 at 3:46

Masoud Badrmiran · Accepted Answer · 2021-06-16 03:25:37Z

2

Instead of a unique id you can simply set tag property for each Button object and then find that button with that tag and define your functionality

answered Jun 16, 2021 at 3:25

Masoud Badrmiran

4512 gold badges4 silver badges11 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Ravi Kumar · Accepted Answer · 2021-06-16 03:58:35Z

1

You can generate an Id for each button using generateViewId() method.

 addedButton.id = generateViewId()

Also, Create a new Button every time the user clicks on add button. So you should do something like this:

add.setOnClickListener {
        val addedButton = Button(this)
        addedButton.text = written.text.toString()
        addedButton.id = generateViewId()
        addedButton.layoutParams = LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT)
        (LLayout as LinearLayout).addView(addedButton)
        //clearing text from EditText written
        written.text.clear()
    }

answered Jun 16, 2021 at 3:58

Ravi Kumar

4,5433 gold badges20 silver badges25 bronze badges

3 Comments

Shagufta Over a year ago

How can I reference the generated id later on. For example, if I want to make the button lead to a new activity, change color, Etc.

Ravi Kumar Over a year ago

You can save the generated id or button in an array or list and can reference it later.

Shagufta Over a year ago

Could you show how to do this in your answer please?

Krishnendu Nag · Accepted Answer · 2021-06-16 03:47:36Z

0

For unique id you can set the (number of child view + 1) as id to the newly created Button.

answered Jun 16, 2021 at 3:47

Krishnendu Nag

1

Collectives™ on Stack Overflow

How to set different ids' for dynamic buttons programmatically? (Kotlin)

3 Answers 3

Comments

3 Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

3 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related