1. Add this as a submodule to your Git repository with local path 'ionclient'. Folder 'ionclient' must be in the same directory as your app module. (If your code is not in a Git repository clone this repository into folder ' ionclient'.) Carefully select a branch:
   • develop: Contains the latest version of ION
   • develop-old-ion-structure: Older version before breaking API changes, might contain some recent bugfixes
2. In settings.gradle: include ':ionclient'
3. In build.gradle of your app module add module dependency

implementation project(':ionclient')

TBD: Make ION client available as a dependency.

The main entry point is the class IonClient. Create one or multiple instance of IonClient (the latter can be done by using the copy constructor on an already created instance). Try to re-use/share the OkHttpClient instance to use a common thread pool for network calls.

IonClient requires an instance of CollectionProperties, which contains the essential configuration data.

IonClient.loadImage() was removed. This call used Picasso under the hood. Replace these calls with an image loading library of your choice (e.g. Coil or Glide) and configure that library by setting a custom OkHttpClient instance, which is best obtained by calling OkHttpClient.withIonFileCache().

• Replace BasicAuth.getAuthHeaderValue(username, password) with Credentials.basic(username, password)
• IonClient.getInstance() was removed, use the constructor. If multiple instances are created (which is the case for Bayern International) you might want to remember the different instances in your app.
• Log level ist set via IonLog.logLevel (before: IonConfig.logLevel)
• IonConfig: authorization(), additionalHeaders(), and networkTimeout() were removed.
  • Headers (incl. Authorization Header) must be defined in the OkHttpClient instance passed to the IonClient constructor.
  • There are okhttp helper classes in the androidkit (module: jvm-core)
• IonConfig renamed to CollectionProperties