21⟩ Define Android application Content Providers components?
They handle data and database management issues.
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52 Mobile Developer Questions And Answers
22⟩ What are Activities?
An activity is a single, focused thing that the user can do. when ever user click on GUI the next Activity will be start and new GUI set base on coding.
23⟩ Define Android application Services components?
They handle background processing associated with an application.
24⟩ What are the advance features of Android OS?
★ Google now (voice assistant)
★ NFC (Near Field Communication)
★ Unlock your phone by your face
★ Use your phone with joystick to enjoy gaming experience
★ Connect your phone with LED TV via MHL or micro HDMI cable
★ Screen Capture
★ Multitasking Future (Task Switcher)
★ Data Usages (Check and also set limit from device)
25⟩ Define Android application Broadcast Receivers components?
They handle communication between Android OS and applications.
26⟩ Define Android application Activities components?
They dictate the UI and handle the user interaction to the smartphone screen.
27⟩ Which are the advantages of android?
★ Open-source
★ Platform-independent
★ Supports various technologies (having number of native application like: camera, bluetooth, wifi, speech, EDGE)
28⟩ SDK stands for?
Software Development Kit.
29⟩ Which language need to know to develop android apps?
★ Java
★ XML
30⟩ How Android allows you to store data?
Any of the following 5 possible options are acceptable:
1) SharedPreferences
2) Internal Storage
3) External Storage
4) SQLite Database
5) Network connection
31⟩ Which any other advice you have for the app developer?
Pick the platform you want to develop on wisely; focus only on one or two platforms in the beginning; and start simple. Focus on core functionality first and add features in subsequent versions as you gain insight and experience.
32⟩ What is manifest file and how we used?
Every Android app must have this manifest file in its root directory named 'AndroidManifest.xml'. The file includes critical information about the app, including the Java package name for the application.
33⟩ What is first element in AndroidManifest file, right after the encoding declaration?
'manifest' Note: The 'permissions' element is the next best answer if the developer assumed you meant the first element within the 'manifest' structure.
34⟩ Tell me which JSON framework is supported by iOS?
SBJson framework is supported by iOS. It is a JSON parser and generator for Objective-C. SBJson provides flexible APIs and additional control that makes JSON handling easier.
35⟩ Tell me does iOS support multitasking?
iOS 4 and above supports multi-tasking and allows apps to remain in the background until they are launched again or until they are terminated.
36⟩ Which data types does AIDL support?
AIDL supports charSequence, list, map, string, and all types of native java data types.
37⟩ Where test Apple iPhone apps if don't have the device?
iOS Simulator can be used to test mobile applications. Xcode tool that comes along with iOS SDK includes Xcode IDE as well as the iOS Simulator. Xcode also includes all required tools and frameworks for building iOS apps. However, it is strongly recommended to test the app on the real device before publishing it.
38⟩ Tell me the name of that application thread from where UIKit classes should be used?
UIKit classes should be used only from an application's main thread. Note: The derived classes of UIResponder and the classes which manipulate application's user interface should be used from application's main thread.
39⟩ Which API is used to write test scripts?
UI Automation API is used to automate test procedures. Tests scripts are written in JavaScript to the UI Automation API. This in turn simulates user interaction with the application and returns log information to the host computer.
40⟩ Which framework is used to construct application's user interface for iOS?
The UIKit framework is used to develop application's user interface for iOS. UIKit framework provides event handling, drawing model, windows, views, and controls specifically designed for a touch screen interface.
