Android Button background color not changing on xml

Question

Android Stidio 4.1.1
- SDK 29 (Android 10)

I trying to change button background color on xml, but it doesn't changed.

here's my code

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:orientation="vertical">

<Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="#ff0000"/>

</LinearLayout>

enter image description here

I think it might be work fine, but it still purple color :(

You have a custom theme named 'Test' applied in the editor. What is the parent of that theme? — Zankrut Parmar, Dec 28 '20 at 12:42
Does this answer your question? [Having an issue coloring custome xml button](https://stackoverflow.com/questions/65202859/having-an-issue-coloring-custome-xml-button) — David Kroukamp, Dec 28 '20 at 13:04

Ma Jeed · Accepted Answer · 2020-12-28T13:04:12.547

8

if you are using Android Studio 4.1.1 you are probably using Theme.MaterialComponents check your themes.xml file

so you have to use this attribute

android:backgroundTint="#ff0000"

read this documentation for more information:

https://material.io/components/buttons

If you insist on using android:background you can change your button xml code like this to force it using appcompat :

<androidx.appcompat.widget.AppCompatButton
    android:id="@+id/button1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="#ff0000"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent" />

or you can change the theme of all your project by changing the theme in themes.xml like this:

I hope this is useful.

edited Dec 28 '20 at 13:04

answered Dec 28 '20 at 12:16

Ma Jeed

832
1
4
12

it work, but i really doest need backgroundTint option. there's any way to use only background ? – LEE Dec 28 '20 at 12:19
if you are using android studio 4.1.1 you probably using Theme.MaterialComponents "check the themes.xml in your project" if you use background attribute it will use the default color. read this documentation https://material.io/components/buttons – Ma Jeed Dec 28 '20 at 12:28
thx for the great answer, I think It would be better to use a different kind of theme. or downgrade Android Studio version :( – LEE Dec 28 '20 at 13:27

score 1 · Answer 2 · answered Dec 28 '20 at 12:42

1

Use this in your java code.

button1.setBackgroundTintList(ColorStateList.valueOf(Color.parseColor("#ff0000")));

answered Dec 28 '20 at 12:42

Mrudul Tora

715
8
14

score 0 · Answer 3 · answered Dec 28 '20 at 12:12

0

May be Android Studio is showing you the cached view for xml. Try changing Emulator from above where it is selected Custom as per your image. If it doesn't update the colour, try Invalidate Cache and Restart you Android Studio

answered Dec 28 '20 at 12:12

Monim Kaiser

65
1
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thx for the answer :D but it still doest work ... :( – LEE Dec 28 '20 at 12:16
Is your theme **Theme.MaterialComponents** or **Theme.AppCompat**? Try to make your style **Theme.MaterialComponents** – Monim Kaiser Dec 28 '20 at 12:17

score 0 · Answer 4 · answered Feb 04 '21 at 11:08

Ensure all your app dependencies in your build.gradle(app) file are latest.

The latest as of 4th Feb 2021 in android studio 4.1.1 are the following

implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'com.google.android.material:material:1.2.1'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
testImplementation 'junit:junit:4.+'
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'

score 0 · Answer 5 · answered Jun 15 '22 at 10:29

0

if it's not much important, change Button to TextView and set background, it's working as magicially ;))

answered Jun 15 '22 at 10:29

Đức Lê Công

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Android Button background color not changing on xml

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