Download DU (University of Delhi) B-Tech 8th Semester 2341802 Mobile Applications on Android Platform Question Paper

[This question paper contains 7 printed pages]

Your Roll No. : ........................

Sl. No. of Q. Paper : 1740A F-8

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Unique Paper Code : 2341802

Name of the Course : B.Tech. Computer Science

Name of the Paper : Mobile Applications on Android Platform

Semester : VIII

Time: 3 Hours Maximum Marks : 75

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Instructions for Candidates:

1. Write your Roll No. on the top immediately on receipt of this question paper.
2. Section - A is Compulsory.
3. Attempt any four questions from Section - B.
4. Parts of a question must be answered together.

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SECTION - A

1. (a) Describe the requirement of Kernel layer in Android architecture. 2

P.T.O.

1. (b) Define the purpose of start Activity For Result () method in Android application. 2
2. (c) Briefly explain virtual device and SDK manager. 2

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3. (d) How is the menu resource (defined in XML file, say "my_menu") inflated in the function on Create Options Menu () ? 3
4. (e) Explain Delegation Event Model in JAVA. 3
5. (f) How is the data fetched from SQLite database using Cursor? 3
6. (g) Describe the use of intent in Android ? Write a code to view the webpage. 4
7. (h) Briefly explain the following classes : 4
   1. Check Box

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   2. Image View
8. (i) Explain the following layouts : 4
   1. Relative Layout
   2. Frame Layout

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9. (j) Differentiate between 'Inner Class' and 'Anonymous Class' with suitable examples. 4
10. (k) Differentiate between 'throw' and Throws in JAVA with a suitable example (s). 4

SECTION - B

2. (a) Briefly describe On Item Selected Listener () used by the Spinner class. 4
3. (b) Consider the following intent present in : 6

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Activity Q:

Intent intent = new Intent (Intent. ACTION_VIEW);

Intent. set Data (Uri. parse ("http://du.ac.in"));

Check the compatibility of the following activities (Activity A, Activity B and Activity C with action and data of Activity Q, given above ? Justify your answer.

P.T.O.

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2. Activity A:
   <activity android:name=".Activity A">
   <intent-filter>
   <action android: name="android.intent.action. WEB_SEARCH"/>
   <action android: name="android.intent.action. MAIN" />
   

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   < category android:name="android.intent. category. LAUNCHER"/>
   <data android:scheme="http"/>
   </intent-filter>
   </activity>
3. Activity B:
   

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   <activity android:name=".ActivityB">
   <intent-filter>
   <action android:name="android.intent.action. WEB_SEARCH" />
   <action android:name="android.intent.action. MAIN" />

2. <category android:name="android.intent. category. DEFAULT"/>
   

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   <data android:mime Type="text/plain"/>
   </intent-filter>
   </activity>
3. Activity C:
   <activity android:name=".Activity C">
   

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   <intent-filter>
   <action android:name="android.intent.action. VIEW"/>
   <action android:name="android. intent.action. MAIN" />
   < category android:name="android. intent. category.DEFAULT"/>
   <category android:name="android. intent.category.LAUNCHER"/>
   

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   <data android:scheme="http"/>
   <intent-filter>
   </activity>

P.T.O.

3. (a) Explain grid view with the examples. 4

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4. (b) Briefly explain runtime polymorphism and dynamic binding with appropriate examples. 6

3. (b) Describe SQ Lite database. Write code for adding and removing data from SQ Lite database. 6
4. (a) Differentiate between Abstract class and Interfaces in JAVA. 4
5. (b) Create a simple registration form (including e-mail id, password with appropriate input type and a button). On clicking the button, pass the details to another activity and display the data. 6
6. (a) Explain activity lifecycle of Android application. 6

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7. (b) Write a code snippet to create a dialog box. 6
8. (a) Briefly describe the features (any four) of Android Application. 4

7. Write short note on any five of the following: 10
   1. ART
   2. Density independent pixel
   3. R.java file

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   4. Ninepatch bitmaps
   5. Array adapter
   6. Finally Block (JAVA)
   7. Static Class in JAVA

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