20 Essential Android Interview Questions
4 min read4 days ago
As Android continues to dominate the mobile market, developers need to be well-prepared for technical interviews. Here’s a curated list of commonly asked Android interview questions along with detailed answers that will help you ace your next interview.
1. What are the core components of an Android application?
The four fundamental components of an Android app are:
- Activities: Single screens that handle user interaction
- Services: Background processes that run without user interface
- Broadcast Receivers: Components that respond to system-wide broadcasts
- Content Providers: Components that manage shared application data
2. Explain the Android Activity Lifecycle
The Activity lifecycle consists of the following callback methods:
-onCreate(): Called when activity is first created
- onStart(): Called when activity becomes visible
- onResume(): Called when activity starts interacting with user
- onPause(): Called when activity is partially hidden
- onStop(): Called when activity is no longer visible
- onDestory(): Called when activity is destroyed
- onRestart(): Called after stopping, before starting again
