Learn how to test activities in isolation using Espresso and androidx.test in this 28-minute tutorial video. Explore the differences between ActivityScenario and ActivityScenarioRule, practice matching with text in views, and master checking visibility of UI elements. Dive into a step-by-step guide covering dependencies, activity creation, app testing, UI testing, and running tests. Gain hands-on experience with generating test functions, launching activities, and working with secondary activities. Access the accompanying code repository and free course materials to enhance your Android UI testing skills.