Android Interview Questions
Android Interview Questions
Android Interview Question for Freshers
What is Android ?
Android is the name of mobile operating system which is owned by Google. It is an open-source, Linux-based operating system that is used in mobiles, tablets, televisions etc.
Founder of Android ?
Founder of android is Andy Rubin.
Version of android ?
Below are all versions of android.
- Aestro
- Blender
- Cupcake
- Donut
- Eclair
- Froyo
- Gingerbread
- Honycomb
- Ice Cream Sandwitch
- Jelly Bean
- Kitkat
- Lollipop
- Marshmallow
- Nougat
Which kernal is used in android ?
Android is customized Linux 3.6 kernel
What is the APK format ?
APK stand for Android packaging key. It is compressed with classes, UI's, supportive assets and manifest. All files are compressed to a single file is called APK.
What are the advantages of android ?
The main advantage of android is; it Open-source so no need to pay for use this.
- Open-source
- Platform-independent
- Supports various technologies
- Highly optimized Virtual Machine
Does android support other language than java ?
Yes, you can develop android app in C and C++ also using android NDK (Native Development Kit).
Which database used in android ?
SQLite.
What is service in android ?
A service is a component that runs in the background. It is used to play music, handle network transaction etc.
What is ADB in android ?
ADB stands for Android Debug Bridge. It is a command line tool that is used to communicate with the emulator instance.
What is ANR ?
.Full form of ANR is; Application Not Responding. It is a dialog box that appears if the application is no longer responding.
What do you mean by NDK ?
NDK stands for Native Development Kit. By using NDK, you can develop a part of app using native language such as C/C++ to boost the performance..
Give basic tools used to develop an android app ?
- JDK
- Eclipse+ADT plugin
- SDK Tools
What is adapter in android
The Adapter is used to create child views to represent the parent view items.
What is a portable wi-fi hotspot ?
The portable wi-fi hotspot is used to share internet connection to other wireless devices.
What is AAPT ?
It handles the packaging process. AAPT is an acronym for android asset packaging tool.
What is ADB in android ?
It is acts as bridge between emulator and IDE, it executes remote shell commands to run applications on an emulator.
What is sleep mode in android ?
Sleep mode mean CPU will be sleeping and it doe not accept any commands from android device except Radio interface layer and alarm.