Lahori Zeera Interview Questions and Answers

A Service is a component that runs in the background to perform long-running operations. A Foreground Service is a Service that has a notification to show the user that it is running.

• A Service is used to perform long-running operations in the background, such as playing music in a music player app.

• A Foreground Service is a type of Service that has a notification to indicate to the user that it is running and to give it higher priority, making it less likely to be killed by th...read more

The data structure used to store views in a layout is a tree structure.

• Views in a layout are stored in a hierarchical tree structure.

• Each view is a node in the tree, with parent-child relationships defining the layout.

• Examples include LinearLayout, RelativeLayout, and ConstraintLayout.

Functions to add in an Image Loader library for Senior Android Developer role

• Support for loading images from different sources like network, local storage, and resources

• Caching mechanism to improve performance and reduce network calls

• Ability to handle image loading in different formats like JPEG, PNG, GIF, etc.

• Support for placeholder images while the actual image is being loaded

• Error handling for failed image loading requests

• Option to customize image loading behavior like res...read more

ConstraintLayout is preferred for its flexibility, efficiency, and ease of use in creating complex layouts.

• Allows for creating complex layouts with a flat view hierarchy, improving performance

• Supports responsive design with constraints that adapt to different screen sizes

• Easier to use and understand compared to other layout options like RelativeLayout

• Provides tools like Layout Editor in Android Studio for visual editing of layouts

Content providers are components in Android that manage access to a structured set of data. They are used to share data between apps.

• Content providers allow apps to securely share data with other apps

• They provide a standard interface for querying and modifying data

• Content providers are often used to access data from databases or files

• Examples include the Contacts Provider for accessing contact information and the Media Provider for accessing media files