Ezeiatech Systems Android Developer Interview Questions, Process, and Tips

HashMap is unordered while LinkedHashMap maintains insertion order.

• HashMap provides faster access and retrieval of elements while LinkedHashMap maintains the order of insertion.

• LinkedHashMap is useful when we need to maintain the order of insertion of elements.

• HashMap is preferred when order is not important and faster access is required.

• Example: HashMap is used in caching while LinkedHashMap is used in LRU cache imple

Foreground services are services that have a higher priority and are visible to the user.

• Foreground services are used to perform tasks that are noticeable to the user, such as playing music or downloading files.

• They require a notification to be displayed to the user, indicating that the service is running.

• To implement a foreground service, you need to create a service class and call startForeground() method in it.

• You a...read more

Intent Service is a subclass of Service that performs a single operation on a separate thread.

• Intent Service is used for long-running operations that do not require user interaction.

• It is started with an Intent and runs on a separate thread.

• It stops itself automatically when the operation is complete.

• It can be used for tasks like downloading a file or uploading data to a server.

• Intent Service is useful for performing b

No, a final class in Java cannot be inherited.

• Final classes are those classes which cannot be extended or inherited.

• If a class is declared as final, it means that it cannot be subclassed.

• Final classes are used to prevent modification of a class's implementation.

• Final classes are also used to improve performance and security.

• For example, the String class in Java is a final class and cannot be inherited.

MVP and MVVM are architectural patterns used in software development for separating concerns and improving maintainability.

• MVP stands for Model-View-Presenter and is a pattern where the presenter acts as a mediator between the view and the model.

• MVVM stands for Model-View-ViewModel and is a pattern where the view model acts as a mediator between the view and the model.

• In MVP, the view is responsible for updating the pr...read more

Bitrate can be set using DefaultTrackSelector in ExoPlayer

• Create a DefaultTrackSelector instance

• Create a TrackSelection.Factory instance

• Set the bitrate using the factory

• Set the track selector to the player