18+ Dev Tools in One App – Full Source Code

Andriod Studio source code of a fully functional offline developer toolkit with 18+ essential tools for mobile development.

Unlock the potential of the Developer Toolkit with this complete source code. This app features 18+ essential developer tools that work offline, making it the perfect solution for developers, programmers, testers, and engineers who need quick, reliable utilities without relying on internet access.

Included tools:

- JSON Formatter: Beautify and validate JSON data. - XML Beautifier: Format XML data for better readability. - HTML Viewer: View HTML content. - Base64 Encoder/Decoder: Encode and decode Base64 strings. - Hash Generator: Generate MD5, SHA-1, SHA-256, and SHA-512 hashes. - URL Encoder/Decoder: Encode and decode URLs. - Regex Tester: Test regular expressions against text. - Text Diff: Compare two texts to find differences. - UUID Generator: Generate universally unique identifiers. - Color Converter: Convert color codes between different formats (e.g., RGB, Hex). - Log Viewer: View application logs. - Clipboard Manager: Manage clipboard history. - App Info Viewer: View detailed information about installed applications. - JavaScript Tester: Execute JavaScript code snippets. - HTTP Header Viewer: Parse and view HTTP headers. - Network Packet Size Calculator: Calculate network packet sizes. - MAC Address Formatter: Format MAC addresses. - Offline Functionality: All core tools work without an internet connection.

The source code is clean, well-documented, and easy to customize. It is designed to work offline, offering a fast, secure, and seamless experience without the need for APIs or internet connectivity.

Features:

- Complete source code for 18+ offline developer tools - 100% native Android Studio Project (Java/Kotlin) - Works 100% offline – no data or APIs needed - AdMob Integration ready - Easy to modify and integrate into your projects - Detailed documentation included

Requirements:

- Android Studio (latest stable version recommended) - Gradle (configured automatically with Android Studio) - Minimum SDK 24 (Android 7.0 – Nougat) or higher​ - 50 MB free storage space

Follow these steps to set up, customize, and build the Offline Developer Toolkit:

1. Download & Open Project

- Download or clone the source code from your Codester purchase.

- Open in Android Studio (latest stable version recommended).

Wait for Gradle sync to complete automatically.

2. Run the Project

- Select a device or emulator running Android 7.0 – Nougat) or higher​

Click Run (Shift + F10) in Android Studio.

The app will build and install automatically.

3. Customize the App

- Change branding:

Replace app icons in app/src/main/res/mipmap-*.

Update splash screen images in app/src/main/res/drawable.

- Modify tools:

Add, remove, or edit tools in the app module source files.

- Enable AdMob:

Add your AdMob App ID to AndroidManifest.xml.

Add Ad Unit IDs in the code where ads are loaded.

- Change app name or package ID:

Update in app/src/main/AndroidManifest.xml and build.gradle.

4. Test the App

- Use a real device or high-performance emulator.

Ensure all 18+ tools function offline as intended.

5. Build Release APK

Go to Build → Generate Signed Bundle/APK in Android Studio.

- Create or use an existing keystore for signing.

Select APK → Release → Finish.

Your signed APK will be generated in app/release/.

6. Publish

- Ready to upload on Play Store, Codester, or any app marketplace.

Include screenshots, icons, and banners for a professional listing.