How to apply button style on runtime in android kotlin

Question

How to apply runtime button style in android kotlin?

My Style (themes.xml):

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="WhiteButtonLightTheme" parent="ThemeOverlay.AppCompat.Light">
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorWhite</item>
        <item name="colorButtonNormal">@color/colorWhite</item>
        <item name="colorControlHighlight">@color/colorGray</item>
    </style>

    <style name="RedButtonLightTheme" parent="ThemeOverlay.AppCompat.Light">
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorRed</item>
        <item name="colorButtonNormal">@color/colorWhite</item>
        <item name="colorControlHighlight">@color/colorGray</item>
    </style>

    <style name="GreenButtonLightTheme" parent="ThemeOverlay.AppCompat.Light">
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorGreen</item>
        <item name="colorButtonNormal">@color/colorWhite</item>
        <item name="colorControlHighlight">@color/colorGray</item>
    </style>
</resources>

My Kotlin Code:

var btnOpt4 = Button(con)
btnOpt4 = rv.findViewById(R.id.btnOption4) as Button

Please post activity class. can you apply theme to whole activity — Pankaj Kant Patel, Mar 11 '18 at 08:07

abhilasha Yadav · Answer 1 · 2018-05-23T07:23:51.780

3

You can directly call by id to button ( by using apply plugin: 'kotlin-android-extensions')

in your activity and set style by this:

 button.setTextAppearance(R.style.AlertDialog_AppCompat)

edited May 23 '18 at 07:23

answered May 23 '18 at 06:48

abhilasha Yadav

217
1
9

Welcome to StackOverflow! Although this might answer the question, consider supporting your answer with references and links on why/how it will work. – Rick M. May 23 '18 at 07:21

score 1 · Answer 2 · answered Mar 04 '20 at 11:36

1

use below code

btn.setTextAppearance(this, android.R.style.TextAppearance_DeviceDefault_Medium);

answered Mar 04 '20 at 11:36

rahul khurana

188
1
9

2

Code only answers can almost always benefit from the addition of some explanation. In this case explain why you think this will fix the problem and where this code should be inserted. – Jason Aller Mar 04 '20 at 15:55

godot · Answer 3 · 2018-03-11T10:58:33.997

0

btnOpt4 = rv.findViewById<Button>(R.id.btnOption4)
btnOpt4.setTextAppearance(R.style.RedButtonLightTheme)

also you can use setBackgroundResource method to change background style of button in runtime:

btnOpt4.setBackgroundResource(R.drawable.some_drawable)

edited Mar 11 '18 at 10:58

answered Mar 11 '18 at 10:47

godot

3,422
6
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How to apply button style on runtime in android kotlin

3 Answers3