How to set background color of an Activity to white programmatically?
Add this single line in your activity, after setContentView() call
getWindow().getDecorView().setBackgroundColor(Color.WHITE);
Get a handle to the root layout used, then set the background color on that. The root layout is whatever you called setContentView with.
setContentView(R.layout.main); // Now get a handle to any View contained // within the main layout you are using View someView = findViewById(R.id.randomViewInMainLayout); // Find the root view View root = someView.getRootView(); // Set the color root.setBackgroundColor(getResources().getColor(android.R.color.red));
I prefer coloring by theme
<style name="CustomTheme" parent="android:Theme.Light"> <item name="android:windowBackground">@color/custom_theme_color</item> <item name="android:colorBackground">@color/custom_theme_color</item></style>