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r2generator

R2generator is a gradle plugin that generate R2.java for android library.

Overview

Inside android library, we usually usegetResources().getIdentifier("res_name", "res_type", "package_name")to access resources.

This plugin provide an easier way to handle the "res_name" above by generating R2.java file during build time.

Here's a sample of auto generated R2.java :

public final class R2 {
  public static final class anim {
    @AnimRes
    public static final String abc_fade_in = "abc_fade_in";
  }
  //...
}

After applying this gradle plugin, you can simply use R2.anim.abc_fade_in to replace your hardcoded "abc_fade_in".

If you take a look at the source code, you may find out that this library is nothing but a Butterknife Library project copycat. But it does make some difference : ) .

Usage

Add this to your bulidscript:

buildscript {
    repositories {
        maven { url 'https://jitpack.io' }
    }
    dependencies {
        classpath 'com.github.nichbar:r2generator:1.0.5'
    }
}

then apply it in your module:

apply plugin: 'r2generator-plugin'

Development

If you wanna modify this plugin, you may follow these procedure.

  1. Clone this project.
  2. Remove maven { url 'https://jitpack.io' } from root build.gradle file.
  3. Apply your changes to r2generator library.
  4. Execute ./gradlew publish to generate plugin.
  5. Run the demo project to check your changes.

License

Apache-2.0

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A gradle plugin that generate R2.java for android library.

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