Which way of launching a Service keeps it alive until it explicitly stops, regardless of whether any UI is still connected to it?

Two cooperating apps from different vendors want to share data deliberately despite the application sandbox. What is the sanctioned route?

You are adding a “Call the office” button. Per the lecture’s “check whether an Intent already does the job” guidance, the best first move is to:

A counter Text changes from 4 to 5 and you want the old number to slide out while the new one slides in. Which API is designed for this?

Placed on a class’s constructor, what does @Inject tell Hilt?

In which file does an app declare its Activities, Services, and ContentProviders so the operating system knows they exist and can activate them?

Quotes move from an in-memory list to a Room database. With the repository pattern and Hilt already in place, what has to change?

The block passed to Modifier.pointerInput is a suspending block: detectDragGestures runs as a loop over pointer events for as long as the element is on screen, rather than being a callback you invoke repeatedly.

Which MediaStore operation requires no permission at all on modern Android?

How should a small piece of data — say, a note’s title string — travel from the launching activity to the activity it starts?