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You need Android Studio 3.3.x, or later. You may either start with a new project or an existing project.

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Start with an

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Existing Project

Goto Tools|Kotlin|Configure Kotin in Project.
You will present with a dialog with two options. Choose "Android with Gradle":
Choose the "app" to enable Kotlin integration (choose the latest version corresponding to the plugin on your IDE):

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Code Block

language	groovy
theme	Confluence
title	build.gradle (app)
linenumbers	true

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-android'

// omitted... 

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
}

Start with a New Project

Start with the new project wizard on Android studio.
Choose "Kotlin" language:

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Follow the initial setup as described the Android Integration documentation, take especially care of:
1. Dependencies
2. The handling of native libraries.
3. Upgrading pro-guard.

Implement the GreenIDListener interface on your activity, for example:

Code Block

language	java
theme	Confluence
title	GreenIDActivity.kt

class GreenIDActivity :  AppCompatActity(), GreenIDListener {
	
	override fun onGreenIDSuccess(resultCode: Int, verificatationToken: String?, verificationStatus: String?) {
    	// Your business logic here 
	}	

	override fun onGreenIDFailed(resultCode: Int, message: String?, description: String?) {
		// Handle all failures
		when (result) {
			ResultCode.NO_NETWORK -> noNetwork()
			ResultCode.BACK -> userPressedBack()
			else -> handleGeneralGreenIDError(resultCode,message)
		}
	}
}

Note
Override is a required keyword in Kotlin. When overriding a function, you do not have specify the access scope: Public stays public, Protected stays protected!

Write a function to start the GreenID™ SDK:

Code Block

language	java
title	GreenActivity.kt

// In GreenActivity.kt

private fun startGreenID() {

	val configBundle = Bundle().apply {
		putString("accountId", "account-id-as-provided")
		putString("baseUrl", "https://simpleui-test-uat1au.vixverify.com/") // Change this
		putString("apiCode", "api-code-as-provided")          
		putString("countryCode", "XX")
		putString("mode", "onboarding")         
	}

    try {
    	GreenID.getInstance(applicationContext).start(configBundle, this)	
    catch(e: GreenIDConfigException) {
		// You have to handle this!
	}
}

Start the GreenID™, for example on a button/view click:

Code Block
// onCreate: startGreenIdBtn.setOnClickListener { startGreenID() }

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