India App Developer Android App Developer Interview Questions, Process, and Tips

Android architecture features include Linux kernel, libraries, runtime, application framework, and apps.

• Linux kernel provides hardware abstraction layer

• Libraries include SQLite, OpenGL, and SSL

• Runtime includes Dalvik or ART virtual machine

• Application framework provides building blocks for app development

• Apps are the end-user applications

• Modularity and flexibility are key features

AAPT stands for Android Asset Packaging Tool. It is used to package and compile Android app resources.

• AAPT is a command-line tool that is included in the Android SDK.

• It is used to compile resources such as images, layouts, and strings into a binary format that can be used by the Android system.

• AAPT also generates the R.java file, which contains references to all the resources in an Android app.

• It can be used to package...read more

The life cycle of an Android activity refers to the different states an activity goes through during its lifetime.

• onCreate() is called when the activity is first created

• onStart() is called when the activity becomes visible to the user

• onResume() is called when the activity starts interacting with the user

• onPause() is called when the activity is partially obscured by another activity

• onStop() is called when the activity i...read more

Broadcast receivers are components that allow the app to receive and respond to system-wide broadcast announcements.

• Broadcast receivers are registered in the app manifest or dynamically in code.

• They can receive broadcasts from the system or from other apps.

• Broadcasts can be sent as ordered or unordered.

• Broadcast receivers can perform actions such as updating UI, starting a service, or sending a notification.

• Examples of...read more