Android 6

All layout classes are the subclasses of

• android.view.View
• android.view.ViewGroup
• android.widget
• None of the above

Action Bar can be associated to

• Only Fragments
• Only Activities
• Both Activities and Fragments
• None of the above

Fill in the blank space in the following sentence with the correct choice: The ………………………… is a layout that arranges other views either horizontally in a single column or vertically in a single row.

• LinearLayout
• RelativeLayout
• ConstraintLayout
• Frame Layout

Your app receives location updates from NETWORK_PROVIDER or from GPS_PROVIDER. If your app receives location information from either of these location provider sources, you need to declare that the app uses these hardware features in your app manifest. Which of the following tags gives the location information to your app?

• <uses-permission android:name=”android.permission.ACCESS_FINE_GPS” />
• <uses-permission android:name=”android.permission.INTERNET” />
• <uses-permission android:name=”android.permission.ACCESS_FINE_LOCATION” />
• <uses-permission android:name=”android.permission.ACCESS_GPS_LOCATION” />

What is commit() and apply() in SharedPreferences?

• - commit() returns a boolean value of success or failure immediately by writing data synchronously. - B28:M28.
• - apply() returns a boolean value of success or failure immediately by writing data synchronously. commit() is asynchronous and it won't return any boolean response.
• Both apply and commit returns a boolean value of success or failure immediately by writing data synchronously.
• Both apply and commit are asynchronous and it won't return any boolean response

The ... uses composition in place of inheritance to extend the functionality of an object at runtime. BufferedReader and BufferedWriter are some excellent examples of... in Java.

• Composite pattern
• Decorator pattern
• Template pattern
• State pattern

...makes it easy to create loosely coupled components, which typically means that components consume functionality defined by interfaces without having any first-hand knowledge of which implementation classes are being used

• Bridge
• Decorator
• Dependency injection
• None

How to run into Runnable in this code using Mockito? public void test() { mHandler.post(new Runnable() { @Override public void run() { Log.d(TAG, "This is test function"); } }); }

• Use doAnser
• Use when
• Use ReflectionHelpers.getField
• Use ReflectionHelpers.setField

Which component helps implement pagination from network and database

• PagingSource
• PagingDataAdapter
• PagingData
• RemoteMediator

Which of sentences are true about Kotlin?

• LESS CODE: It has a much shorter code than Java’s code, but more complexible synctax for the same proplem.
• DATA CLASSES: In simple terms, ‘data classes’ are containers for data. If If you come from a Java background, you’ll know how much code you have to write to get these set up
• CO-ROUTINES: Kotlin’s coroutines help us write async code in a blocking fashion. This way we can just focus on the data rather than how to fetch it. Coroutines are lightweight threads
• NULL SAFETY: there is the concept of nullable and non-nullable variables. For non-nullable variables, you have to specify a value immediately upon creating an object (the exception is the late init var modifier). There is no way to have a null pointer exception and there is no need for null checks. The rule of thumb is this: If you know something may be null (such as data coming from a network call), use nullable variables to protect yourself from null pointer exception.