Application Development Questions

Q:

What JSON framework is supported by iOS (iPhone OS) ?

Answer

  • SBJson framework is supported by iOS.

  • It is a JSON parser and generator for Objective-C (Objective-C is the primary programming language you use when writing software for OS X and iOS. It is a superset of the C-programming language and provides object-oriented capabilities and a dynamic runtime).

  • SBJson provides flexible API's and additional control that makes JSON handling easy.

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Q:

What are the features added in iOS 9 ?

Answer

  • Intelligent Search and Siri- Intelligent Search is an excellent mechanism to learn user habits and act on that information- open apps before we need them, make recommendations on places we might like and guide us through our daily lives to make sure we’re where we need to be at the right time.
    Siri is a personal assistant to the users, able to create contextual reminders and search through photos and videos in new ways. Swiping right from the home screen also brings up a new screen that houses “Siri Suggestions,” putting favorite contacts and apps right on your fingertips, along with nearby restaurant and location information and important news.

  • Deeper search capabilities can show results like sports scores, videos, and content from third-party apps, and you can even do simple conversions and calculations using the search tools on your iPhone or iPad.

  • Many of the built-in apps have been updated.
    ✓ Notes includes new checklists and sketching features
    ✓ Maps now offers transit directions
    ✓ Mail allows for file attachments
    ✓ Apple Pay is being improved with the addition of store credit cards and loyalty cards
    ✓ Leading “Passbook” to be renamed to “Wallet” in iOS 9.

  • San Francisco font, wireless CarPlay support

  • An optional iCloud Drive app, built-in two-factor authentication and optional longer passwords for better security.

  • Performance improvements

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Q:

What items are important in every Android project?

Answer

 These are the essential items that are present each time an Android project is created:


- AndroidManifest.xml


- build.xml


- bin/


- src/


- res/


- assets/

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Q:

What is the importance of having an emulator within the Android environment?

Answer

The emulator lets developers “play” around an interface that acts as if it were an actual mobile device. They can write and test codes, and even debug. Emulators are a safe place for testing codes especially if it is in the early design phase.

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Q:

What are new Media Elements in HTML5?

Answer

Following are the New Media Elements are present in HTML5:


<audio> tag: for playing audio.


<video> tag: for playing video.


<source> tag: For media resources for media elements.


<embed> tag: For embedded content


<track> tag: For text tracks used in media players

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Q:

What is the purpose of canvas in HTML?

Answer

Canvas is an element that is used for the graphics for the web page. It uses JavaScript to bring the graphics functionality live. It allows easy way to draw the graphics and use different types of tools to create drawing on the web page. Canvas is just a rectangular area that controls the pixel of every element that is used in the web page. Canvas uses methods like paths, circles, etc. The canvas element will be used as follows:


<canvas id="can" width="200" height="100"></canvas>


The canvas element includes id, width and height settings and with the javascript it gets used like:


<script type="text/javascript">


var c=document.getElementById("can");


var ctx=c.getContext("2d");


ctx.fillStyle="#FF0000";


ctx.fillRect(0,0,150,75);


</script>

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Q:

What are three ways to reduce page load time?

Answer

There are many answers here: Reduce image sizes, remove unnecessary widgets, HTTP compression, put CSS at the top and script references at the bottom or in external files, reduce lookups, minimize redirects, caching, etc.

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Q:

What is ADB in Android ?

Answer

Adb is short for Android Debug Bridge. It allows developers the power to execute remote shell commands. Its basic function is to allow and control communication towards and from the emulator port.

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