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Spectrum 2.4GHz is a standard Android project managed by Gradle. You can build it from source using Android Studio on any major operating system. The project targets API 34 (Android 14) while supporting devices running Android 6.0 (Marshmallow, API 23) and above, so both physical devices and modern AVD emulators work out of the box.

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Prerequisites

Before you begin, make sure the following tools are installed and configured on your machine:
  • Android Studio (latest stable release recommended — Hedgehog or newer)
  • JDK 8 or higher — Android Studio bundles its own JDK, but JavaVersion.VERSION_1_8 is required for source and target compatibility
  • Android SDK with API 34 installed via the SDK Manager (Settings → SDK Manager → Android 14.0 (Tiramisu))
  • USB debugging enabled on your physical Android device, or an AVD configured with Android 6.0+ (API 23+)

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Clone the Repository

Open a terminal and run: 
git clone https://github.com/anfegomezver/spectrum24ghz.git
cd spectrum24ghz

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Build Process

1

Open the project in Android Studio

Launch Android Studio, click Open from the Welcome screen (or File → Open if a project is already open), then navigate to and select the spectrum24ghz folder you just cloned. Android Studio will detect the Gradle build files automatically.
2

Wait for Gradle sync to complete

Android Studio will begin syncing immediately. During sync, Gradle downloads all declared androidx dependencies — core, appcompat, material, constraintlayout, recyclerview, and coordinatorlayout. This may take a minute or two on the first run. A green checkmark in the Build panel indicates success.
3

Connect a device or start an emulator

Connect a physical Android device via USB (ensure USB Debugging is turned on under Settings → Developer Options) or launch an AVD from the Device Manager panel. The app requires Android 6.0 (API 23) or higher.
4

Run the app

Press the green Run button in the toolbar, or use the keyboard shortcut Shift+F10 (Windows/Linux) / Control+R (macOS). Android Studio will compile the debug build and deploy it to the selected device.
5

Build a distributable APK

To produce an APK file for distribution, go to Build → Build Bundle(s)/APK(s) → Build APK(s). Gradle will assemble the release variant. When complete, a toast notification appears in the bottom-right corner with a locate link — click it to open the output directory. The APK will be at:
app/build/outputs/apk/release/app-release-unsigned.apk

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Gradle Configuration

The module-level build.gradle file defines all build settings for the app. Key values are shown below:
PropertyValue
namespacecom.spectrum24ghz
applicationIdcom.spectrum24ghz
minSdk23 (Android 6.0)
targetSdk34 (Android 14)
compileSdk34
versionCode1
versionName"1.0"
sourceCompatibilityJavaVersion.VERSION_1_8
targetCompatibilityJavaVersion.VERSION_1_8
viewBindingtrue
plugins {
    id 'com.android.application'
}

android {
    namespace 'com.spectrum24ghz'
    compileSdk 34

    defaultConfig {
        applicationId "com.spectrum24ghz"
        minSdk 23
        targetSdk 34
        versionCode 1
        versionName "1.0"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    buildFeatures {
        viewBinding true
    }
}

​
Dependencies

The app relies exclusively on stable AndroidX and Material Components libraries: 
dependencies {
    implementation 'androidx.core:core:1.12.0'
    implementation 'androidx.appcompat:appcompat:1.6.1'
    implementation 'com.google.android.material:material:1.11.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
    implementation 'androidx.recyclerview:recyclerview:1.3.2'
    implementation 'androidx.coordinatorlayout:coordinatorlayout:1.2.0'

    testImplementation libs.junit
    androidTestImplementation libs.ext.junit
    androidTestImplementation libs.espresso.core
}
The release build type has minifyEnabled false, which means ProGuard and R8 code shrinking are disabled. The proguard-rules.pro file is referenced but has no effect in the current configuration. If you plan to publish the app to the Play Store, consider enabling minification and adding appropriate keep rules for the com.spectrum24ghz.models package.

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