Mobile Programming Android Developer Interview Questions and Answers

Activity lifecycle in Android refers to the series of states an activity goes through from creation to destruction.

• An activity is created when it is launched by the user or another application.

• It goes through onStart(), onResume(), onPause(), onStop(), and onDestroy() methods during its lifecycle.

• Activities can also be paused, stopped, or restarted based on user interactions or system events.

• The onSaveInstanceState() m...read more

Launch modes determine how a new instance of an activity is associated with the current task.

• Launch modes include standard, singleTop, singleTask, and singleInstance.

• Standard mode creates a new instance of the activity in the current task.

• SingleTop mode checks if the activity instance already exists at the top of the stack.

• SingleTask mode creates a new task and adds the activity to the task as the root.

• SingleInstance m...read more

Answering questions related to Android development concepts.

• Interface is a contract that defines the behavior of a class

• MVP and MVVM are architectural patterns used in Android development

• MVP separates the presentation layer from the business logic layer

• MVVM separates the presentation layer from the business logic layer and provides data binding

• Coroutines are a way to perform asynchronous operations in a sequential mann