Setting Android Theme background color

Question

I m trying to modify the default background theme color  which should be easy but surprisingly I can t get it working  Please note that I want the change to be across the entire app  not just for a single activity  Here is my code    styles xml   lt resources gt        lt color name  white opaque  gt  FFFFFFFF lt  color gt       lt color name  pitch black  gt  FF000000 lt  color gt        lt style name  AppTheme  parent  android Theme Light  gt           lt item name  android background  gt  color white opaque lt  item gt           lt item name  android windowBackground  gt  color white opaque lt  item gt           lt item name  android colorBackground  gt  color white opaque lt  item gt       lt  style gt    lt  resources gt    and of course in the manifest   lt application                       android theme   style AppTheme   gt    lt  application gt    Android doc which I consulted on modifying themes  http   developer android com guide topics ui themes html  I ve tried switching between white opaque and pitch black for all the xml attributes but it doesn t change a thing  Any suggestions

User · Answer

lt resources gt        lt  -- Base application theme  -- gt       lt style name  AppTheme  parent  android Theme Holo NoActionBar  gt           lt item name  android windowBackground  gt  android color black lt  item gt       lt  style gt    lt  resources gt

User · Answer

Okay turned out that I made a really silly mistake  The device I am using for testing is running Android 4 0 4  API level 15   The styles xml file that I was editing is in the default values folder  I edited the styles xml in values-v14 folder and it works all fine now

User · Answer

Open res - gt  values - gt  styles xml and to your  lt style gt  add this line replacing with your image path  lt item name  android windowBackground  gt  drawable background lt  item gt   Example    lt resources gt        lt  -- Base application theme  -- gt       lt style name  AppTheme  parent  Theme AppCompat Light NoActionBar  gt           lt  -- Customize your theme here  -- gt           lt item name  colorPrimary  gt  color colorPrimary lt  item gt           lt item name  colorPrimaryDark  gt  color colorPrimaryDark lt  item gt           lt item name  colorAccent  gt  color colorAccent lt  item gt           lt item name  android windowBackground  gt  drawable background lt  item gt       lt  style gt    lt  resources gt    There is a  lt item name   android colorBackground  gt  color black lt  item gt  also  that will affect not only your main window background but all the component in your app  Read about customize theme here   If you want version specific styles      If a new version of Android adds theme attributes that you want to   use  you can add them to your theme while still being compatible with   old versions  All you need is another styles xml file saved in a   values directory that includes the resource version qualifier  For   example   res values styles xml          themes for all versions res values-v21 styles xml      themes for API level 21  only       Because the styles in the values styles xml file are available for all   versions  your themes in values-v21 styles xml can inherit them  As   such  you can avoid duplicating styles by beginning with a  base    theme and then extending it in your version-specific styles    Read more here doc in theme

[android] Setting Android Theme background color

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