Advanced Android: Create a Real-REST API Client Application

Learn to import Retrofit, Gson, and Glide into your Android project, configure OkHttp and the logging interceptor, and add the Gson converter for Retrofit 2, while resolving Glide version conflicts.

Open android studio and configure fragment_collections_progressBar and fragment_collections_gridview with 2dp horizontal space to build the collections view. Create item_collections xml for the gridview item, featuring a square image Beautiful Mountain.

Create a collection view layout in Android Studio, including a fragment with a recycler view, progress bar, and user avatar, displaying the collection title, description, and user.

build a fullscreen photo activity by extending AppCompatActivity, removing action bar and status bar for fullscreen, using ButterKnife for binding, and retrieving a photo by id from Unsplash via intent.

Fetch a photo by id from Unsplash in FullscreenPhotoActivity, update the UI with the retrieved bitmap via getPhoto, and handle errors with try-catch.

Implement the set wallpaper function with required AndroidManifest permissions, handle bitmap scaling to centerCrop, and confirm wallpaper set status in the FullScreenPhotoActivity.

Handle favorite button interactions by using realmController and photoID to track saved photos, update the favorite icon via setFabFavorite, and manage two cases: photo stored or not stored.