Hello SDK

In this guide you will learn how to create a Hello World app using the Maps SDK for Android.

Setup

First, get an API key token, see the Getting Started guide.

Download the Maps & Navigation SDK for Android archive file

Download the HelloSDK project archive file or clone the project with Git

See the Configure Android Example guide.

Run the example

In Android Studio, from the File menu, select Sync Project with Gradle Files

An android device should be connected via USB cable.

Press SHIFT+F10 to compile, install and run the example on the android device.

How it works

You can open the MainActivity.kt file to see how to create an empty app and import the Maps SDK for Android.

package com.generalmagic.sdk.examples.hellosdk

import android.os.Bundle
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import com.generalmagic.sdk.core.GemSdk
import com.generalmagic.sdk.core.SdkSettings
import kotlin.system.exitProcess

class MainActivity : AppCompatActivity() {
 override fun onCreate(savedInstanceState: Bundle?) {
     super.onCreate(savedInstanceState)
     setContentView(R.layout.activity_main)
     SdkSettings.onApiTokenRejected = {
         Toast.makeText(this, "TOKEN REJECTED", Toast.LENGTH_LONG).show()
     }
     if (!GemSdk.initSdkWithDefaults(this)) {
         // The SDK initialization was not completed.
         finish()
     }
 }
 override fun onDestroy() {
     super.onDestroy()
     // Release the SDK.
     GemSdk.release()
 }
 override fun onBackPressed() {
     finish()
     exitProcess(0)
 }
}

Note the 2 import statements at the top:

import com.generalmagic.sdk.core.GemSdk

import com.generalmagic.sdk.core.SdkSettings

The MainActivity overrides the onCreate function which

explicitly initializes the SDK:

GemSdk.initSdkWithDefaults(this)

setContentView(R.layout.activity_main) then displays a “Hello World!” message on a blank viewport, as defined in res/layout/activity_main.xml in the project.

Android Examples

Maps SDK for Android Examples can be downloaded or cloned with Git