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title description type page_title slug position tags teampulseid ticketid pitsid
How to Obfuscate Java Code With ProGuard Obfuscating the Java Code of an AppBuilder Apache Cordova app how-to Java Obfuscation for AppBuilder applications obfuscate-java-code obfuscate, cordova, proguard 1077265

Environment

Service Code (AppBuilder), Third-party product
Feature Security
Mobile development type Hybrid (Cordova app)
Mobile OS Android

Description

Application packages cannot be completely secured from reverse-engineering. Instead, it is recommended to use tools for code obfuscation and secure any proprietary code on a server. This article shows how to create a small custom plugin that enables ProGuard and obfuscates all Java code that is present in your {{site.ab}} {{site.ac}} application.

Solution

  1. Create an empty folder.

  2. Inside the folder, create three files - package.json, plugin.xml, enable-proguard.gradle.

  3. The package.json file contains only the most basic information required by a {{site.ac}} plugin. For example:

    {
  "name": "proguardplugin",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC"
}

  4. The plugin.xml file is used to reference the enable-proguard.gradle file and include it in your app. For example:

    <?xml version="1.0" encoding="UTF-8"?>
<plugin xmlns="http://apache.org/cordova/ns/plugins/1.0"
        xmlns:android="http://schemas.android.com/apk/res/android"
        id="proplugin"
        version="0.0.1">

    <name>proplugin</name>

    <framework src="enable-proguard.gradle" custom="true" type="gradleReference"/>
</plugin>

  5. The enable-proguard.gradle file contains the logic required to enable ProGuard and obfuscate your code.

    android {
    buildTypes {
        release {
            minifyEnabled true
            proguardFile getDefaultProguardFile('proguard-android.txt')
        }
    }
}

  6. The last step is to archive the folder containing those files and import it to your app as a custom plugin.

Notes

Obfuscation with ProGuard in {{site.ab}} can also be achieved by modifying an already existing custom plugin. This can be accomplished by adding the enable-proguard.gradle file to the plugin folder and referencing it in plugin.xml.

See Also