ResourcesPlaceholders

Gradle plugin which adds support for ${placeholder} manifestPlaceholders in Android resource files

Installation

Add the following to your build.gradle:

buildscript {
    repositories {
        // ...
        maven { url "https://jitpack.io" }
    }
    dependencies {
        classpath 'com.github.timfreiheit:ResourcePlaceholdersPlugin:X.X.X'
    }
}

apply plugin: 'com.android.application'

// Make sure to apply this plugin *after* the Android plugin
apply plugin: 'de.timfreiheit.resourceplaceholders.plugin'

Usage

A common use case is using the ${applicationId} when defining App Shortcuts. The android:targetPackage must be set statically and can not easily be used with different build variants or types.
Using placeholders the shortcuts.xml file could look something like:

<shortcuts xmlns:android="http://schemas.android.com/apk/res/android">
    <shortcut ...>
        <intent
            android:action="android.intent.action.VIEW"
            android:targetClass="com.test.MainActivity"
            android:targetPackage="${applicationId}"/>
    </shortcut>
</shortcuts>

Register the file in your apps build.gradle to the plugin:

resourcePlaceholders {
    files = ['xml/shortcuts.xml']
}

Every file in which the placeholders should be supported must be listed. This improves incremental builds and avoid unnecessary work.