If you want to build the keyple android components (aar plugins), you need :

• Java JDK 1.6, 1.7 or 1.8 (Java 11 is not supported yet)
• Intellij 2018+ community version or Android Studio 3.0
• Android sdk 26 should be installed on your machine follow those instructions
• Gradle (any version as we use the gradle wrapper) available here

To setup where is installed you Android SDK, you need to create a file local.properties in the /android, /android/example/calypso/nfc, /android/example/calypso/omapi folders with the following content sdk.dir=absolut/path/to/where/your/android/sdk/is

For instance sdk.dir=/Users/user/Library/Android/sdk

First, you need to build and install locally the java component keyple-core (see above) To build the plugins, execute the following commands :

On Windows :

cd android
.\gradlew.bat installPlugin

On Linux, macOS :

cd android
./gradlew installPlugin

To build the example app NFC and OMAPI, first, you need to build and install locally the java component keyple-core, keyple-calypso and keyple-android-plugin (see above)

On Windows :

.\gradlew.bat -b ./example/generic/android/nfc/build.gradle assembleDebug 
.\gradlew.bat -b ./example/generic/android/omapi/build.gradle assembleDebug

On Linux, macOS :

./gradlew -b ./example/generic/android/nfc/build.gradle assembleDebug 
./gradlew -b ./example/generic/android/omapi/build.gradle assembleDebug