plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<plugin xmlns="http://apache.org/cordova/ns/plugins/1.0" id="cordova-plugin-android-window-background" version="1.0.1">
    <name>Android Window Background</name>
    <description>Plugin to set Android window background for Cordova/Ionic applications</description>
    <license>MIT</license>
    <author>WINTER</author>
    <keywords>cordova,ionic,android,window background,color,background,window,theme,styles.xml</keywords>
	
	<engines>
	  <engine name="cordova-android" version=">=7.0.0" />
	</engines>

  	<platform name="android">
  		<preference name="WINDOW_BACKGROUND_COLOR" />

  		<edit-config file="AndroidManifest.xml" target="/manifest/application/activity[@android:name='MainActivity']" mode="merge">
  			<activity android:name="MainActivity" android:theme="@style/CordovaWindowBackgroundTheme"/>
  		</edit-config>

  		<source-file src="cordova-window-background-strings.xml" target-dir="app/src/main/res/values" />
  		<source-file src="cordova-window-background-styles.xml" target-dir="app/src/main/res/values" />

  		<config-file target="app/src/main/res/values/cordova-window-background-strings.xml" parent="/*">
  			<color name="cordova_window_background">$WINDOW_BACKGROUND_COLOR</color>
  		</config-file>

  		<config-file target="app/src/main/res/values/cordova-window-background-styles.xml" parent="/*">
  			<style name="CordovaWindowBackgroundTheme" parent="@android:style/Theme.NoTitleBar">
  				<item name="android:windowBackground">@color/cordova_window_background</item>
  			</style>
  		</config-file>
  	</platform>
</plugin>