Android SDK

Android SDK allows you to add an 2GIS map to your Android application. Using the SDK, you can display a map on the screen, get information about map objects, use the navigator, build routes, and so on.

See SDK usage examples in the Examples section. For a detailed description of all classes and methods, see API Reference.

Geodata complies with OGC standards.

SDK versions

Android SDK packages are available in two versions:

• Full is a full version that allows you to:
  • Add a map to the application and manage it: add markers and geometric shapes, control the camera movement, display layers (for example, traffic), work with map styles, etc.
  • Search for objects in the directory: organizations, buildings, places, and others.
  • Work with the navigator in the application in one of the three modes: free-drive, turn-by-turn, or simulated navigation.
  • Build optimal routes on ​​the map, including routes inside buildings.
  • Use offline data.
• Map is a lightweight version that allows you to:
  • Add a map to the application and manage it: add markers and geometric shapes, control the camera movement, display layers (for example, traffic), work with map styles, etc.
  • Search for objects in the directory: organizations, buildings, places, and others.

Important

You cannot use Full and Map simultaneously. It causes an assembly error.

Getting API keys

To work with the SDK, you need to get a key file dgissdk.key. It allows connecting to 2GIS servers and retrieving the geographical data, as well as using offline data and the navigator. To obtain the key file, fill in the form at dev.2gis.com and specify the appId of the application for which the key is created.

After you receive the key, initialize the SDK. Follow the requirements:

• You can initialize the SDK only once per application. Only one key can be used for each application. Different keys are required in the following cases:
  • If the application is available for different operating systems.
  • If the application has several alternatives for a single OS (for example, one application for the driver and another for the passenger).
  • If different SDK versions are used (Full and Map).
• The appId value of the application must match the app_id value in the key file.
• Changing the key file while the application is running is not supported.

System requirements

• Android 5.0 (Lollipop) and later
• Supported architectures: x86_64, x86, armeabi-v7a, arm64-v8a
• OpenGL ES 3.1

Installation

To install Android SDK:

1. Declare a custom repository in your build.gradle file:

   repositories {
       maven {
           url "http://artifactory.2gis.dev/sdk-maven-release"
       }
   }
   

2. Add one of the following build dependencies.

   • For the Full SDK version:

     dependencies {
         implementation 'ru.dgis.sdk:sdk-full:latest.release'
     }
     

   • For the Map SDK version:

     dependencies {
         implementation 'ru.dgis.sdk:sdk-map:latest.release'
     }
     

Demo project

You can find a demo app with the source code in the GitHub repository.

Application size

The size of your application may increase noticeably after adding the SDK to your project. See a description of the cause and possible strategies for dealing with this increase below.

Processor architectures

Modern Android devices can have different types of processors: x86-64, x86, ARMv7, and ARMv8. For code written in Java or Kotlin, this is not an issue, as it is executed in a virtual machine and abstracted from the specific hardware. However, for native code, processor type plays an important role.

Therefore, our library contains 4 versions for all ABI (Application Binary Interface) types to provide support for all these processor types.

Size optimization

To reduce the size of your application, you can use splitting APKs by ABI type. This will ensure that only the necessary libraries for a specific user device are built and loaded. See the Android documentation for instructions on building and uploading. Also, if you are using an Android App Bundle, Google Play can automatically rebuild the app for the required processor types of specific user devices.

Size check

To see the actual size of the APK that will be downloaded by the user, it is recommended to use the bundletool tool. This will help to get an APK containing only the required libraries for a particular device:

1. Build an app bundle, selecting this build option in Gradle.
2. Get APK with necessary criteria (for example, only for arm64-v8a) from the app bundle using bundletool.

The resulting APK will reflect the actual size the user gets when downloading the app from Google Play.