Thursday, 27 August 2015

android, change background color of all activities

1. add "android:background="#ffffffff"" to the root xml of all your layouts.

2. use code to change programmatically in all activities.

3. use style:

In you AndroidManifest.xml file, most of you should have this:

And you should have a styles.xml file under res/values:

It should have nothing, but just:

<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">

So that's why you got a black action bar...

Then change it to:

    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <item name="android:windowBackground">@color/background</item>

Then add this into your strings.xml:

<color name="background">#bbff2a</color>

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