Android App Development Masterclass

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Which of these methods are called when the screen changes orientation from portrait to landscape in Android?(Select all acceptable answers.)

15 points

onCreate()

onStop()

onRestart()

onActivityResult()

onRestoreInstanceState()

Choose all possible options to fill in the blanks, so that changes in the shared preferences are saved:

20 points

edit , commit

commit , edit

edit , apply

apply , commit

Which statements are true for the Parcelable interface?(Select all acceptable answers.)

15 points

Parcelable can be used to serialize data into JSON.

Parcelable is used to marshal and unmarshal Java objects.

Parcelable relies on Java Reflection API for marshaling operations.

Any data type can be passed to another intent through the Parcelable interface.

Parcelable creates a large number of temporary objects.

Consider the following code and Select the statements that are correct if the wave file sound is 3 seconds long.(Select all acceptable answers.)

30 points

MainActivity will be started after 4 seconds.

finish() will close the current activity.

While MediaPlayer is playing, startActivity(main) is blocked.

MediaPlayer will play only the first second of the song.

Removing the call to startActivity(main) will close the application if there are no other activities in the application's back stack.

Android content provider architecture, component that does not resides on data layer is

10 points

Internet

SQLite

Files

content provider

Clear selection

In android studio, each new activity created must be defined in

10 points

res/layout

res/values

Build.gradle

AndroidManifest.xml

Clear selection

Android component that controls external elements of file is called

10 points

intent

resource

view

manifest

Clear selection

In android studio, a service that is started and cannot be stopped even calling activity is destroyed is

10 points

startService()

onStop()

onDestroy()

bindService()

Clear selection

consider the options to fill in the blanks

10 points

"vertical", "vertical" , 'vertical"

"vertical", "horizontal" , 'horizontal"

"horizontal", "horizontal" , 'horizontal"

None of the above

Clear selection

To create a unit of code within a method signature that can be extend or shrink is enclosed by

10 points

[]

{}

()

Clear selection

In Java, blueprint created for an object is called

10 points

an object

a function

a program

a class

Clear selection

In android studio, tab in which memory usage of app is shown is called

10 points

CPU

memory

ADB logs

logcat

Clear selection

One of application component, that manages application's background services is called

10 points

Activities

Broadcast Receivers

Services

Content Providers

Clear selection

Element of palette that holds multiple elements of specific purpose is called

10 points

widgets

containers

textfields

layouts

Clear selection

Definition of Loader?

10 points

A. loaders make it easy to asynchronously load data in an activity or fragment

B. loaders make it easy to synchronously load data in an activity or fragment

C. loaders does not make it easy to asynchronously load data in an activity or fragment

D. None of the above

Clear selection

Which layer is not included in the architecture diagram of an Android Platform?

10 points

a)Application

b)Application framework

c)Linux kernel

d)Data interchange

e)Libraries

Clear selection

During the initialization of your Activity, _________ might be used to set the layout resources to define the UI of your Activity.

10 points

a)addContentView(View view, ViewGroup.LayoutParams params)

b)getLayoutInflater()

c)setContentView(int layoutResID)

d)startActivity(Intent intent)

Clear selection

From the structure point of view, which of the following is correct?

10 points

a)BaseGameActivity > Engine > Scene = Camera > Textures > Entities

b)BaseGameActivity > Engine > Entities > Scene = Camera > Textures

c)BaseGameActivity > Camera > Engine > Scene = Entities > Textures

d)BaseGameActivity > Engine > Scene = Camera > Entities > Textures

e)BaseGameActivity > Engine > Camera >Scene > Entities > Textures

Clear selection

A type of service provided by android that allows sharing and publishing of data to other applications is

10 points

View System

Content Providers

Activity Manager

Notifications Manager

Clear selection

Android component that manages app's configuration file is called

10 points

manifest

fragment

view

intent

Clear selection

A type of class that will be responsible to design main screen activity on first time launch of application is called

10 points

Activity class

Parent class

Child class

Inherited class

Clear selection

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