How to use Android libraries e.g. androidx.documentfile or com.android.support:support-v4 or com.android.support:support-v4?

[ctoabidmaqbool]

I am creating custom Attach plugin, but I am not sure how to use Android native libraris while developming the plugins native coding e.g. DalvikPdfViewerService.java.

I am trying to create custom Attach plugin e.g. pdfViewer.

I have added the lib depedency in modules/pdfviewer/build.gradle e.g.

implementation 'com.android.support:support-v4:28.0.0'

but still i can't use imports form this library e.g. import android.support.v4.provider.DocumentFile;

show how can i use native libs e.g. containing .aar files.

in previous javafxmobile-plugin i can simply use

project.afterEvaluate {
    explodeAarDependencies(project.configurations.androidCompile)
    explodeAarDependencies(project.configurations.compile)
}

now how can i use while creating attach plugin or in project which is using attach plugins.

[ctoabidmaqbool]

I think, only way to copy and past lib's codding directly, which is still not better way to doing things.
like xzing lib is directly copy & past without importing xzing lib.

https://github.com/gluonhq/attach/tree/master/modules/barcode-scan/src/main/native/android/dalvik/zxing

[ctoabidmaqbool]

I’ve identified a solution based on the implementation in the attach plugins, specifically:

• Store Review Plugin
• Push Notifications Plugin

Here’s what worked for me:

Steps to Resolve:

1️⃣ Update the necessary files under the dalvik directory:
src/main/resources/META-INF/substrate/dalvik:

• build.gradle: Defines Android-specific configurations.
• android-dependencies.txt: Specifies required dependencies for the Android project.

Updated Files:

build.gradle:

apply plugin: 'com.android.library'

android {
    namespace 'com.gluonhq.helloandroid'
    compileSdkVersion 34

    defaultConfig {
        minSdkVersion 24
        targetSdkVersion 34
    }

    buildFeatures {
        buildConfig = false
        resValues = false
    }
}

repositories {
    google()
}

dependencies {
    compileOnly fileTree(dir: '../libs', include: '*.jar')
    implementation 'androidx.documentfile:documentfile:1.0.1'
}

android-dependencies.txt:

implementation 'androidx.documentfile:documentfile:1.0.1'

2️⃣ Execute the build commands:

./gradlew -i :pdfviewer:nativeBuild
./gradlew :pdfviewer:publishToMavenLocal

This process ensures that all required files, such as android-dependencies.txt, AndroidManifest.xml, and build.gradle, are properly copied and configured in the Android project directory.

Directory Structure After Build:

The resulting aar directory can be opened in Android Studio or IntelliJ IDEA for further development:

.
└── aar
    ├── build.gradle
    ├── gradle
    │   └── wrapper
    │       ├── gradle-wrapper.jar
    │       └── gradle-wrapper.properties
    ├── library
    │   ├── build.gradle
    │   └── src
    │       └── main
    │           ├── AndroidManifest.xml
    │           └── java
    │               └── com
    │                   └── gluonhq
    │                       └── helloandroid
    │                           └── DalvikPdfViewerService.java
    ├── libs
    │   └── util_classes.jar
    ├── local.properties
    └── settings.gradle

This approach allows the project to be natively integrated and customized further.