Associate-Android-Developer Practice Exam Questions and Answers

Move the major components of the Android platform to correct places in diagram.

In Android 8.0, API level 26, some APIs regarding notification behaviors were moved from Notification to NotificationChannel. For example, what should we use instead of NotificationCompat.Builder.setPriority() for Android 8.0 and higher?

What is demonstrated by the code below?

// RawDao.java

@Dao

interface RawDao {

@RawQuery

User getUserViaQuery(SupportSQLiteQuery query);

}

// Usage of RawDao

...

SimpleSQLiteQuery query =

new SimpleSQLiteQuery("SELECT * FROM UserWHERE id = ? LIMIT 1",

new Object[]{userId});

User user = rawDao.getUserViaQuery(query);

...

We have a custom view that extends android.widget.ProgressBar. Our progress bar is not touchable, focusable, etc.: it just shows progress. Style for our custom progress bar extends

“Widget.AppCompat.ProgressBar.Horizontal”. An item, named “progressDrawable”, in our style, is a xml file . What we usually can see as a main single element in this xml file:

Android uses adapters (from the Adapter class) to connect data with View items in a list. There are many different kinds of adapters available, and you can also write custom adapters. To connect data with View items, the adapter needs to know about the View items. From what is extended the entity that is usually used in an adapter and describes a View item and its position within the RecyclerView?

In our TeaViewModel class, that extends ViewModel, we have such method:

public LiveData getTea() { return mTea;

}

An observer in our Activity (type of mViewModel variable in example is TeaViewModel) is set in this way:

mViewModel.getTea().observe(this, this::displayTea);

What will be a correct displayTea method definition?

Select correct statements about Hardware Abstraction Layer (HAL). (Choose two.)

If content in a PagedList updates, the PagedListAdapter object receives:

Working with Custom View. Once you define the custom attributes, you can use them in layout XML files just like built-in attributes. The only difference is that your custom attributes belong to a different namespace. Instead of belonging to the http://schemas.android.com/apk/res/android namespace, they belong to:

What method should we use with Notification.Builder to supply a PendingIntent to be sent when the notification is clicked?

A class that you create for managing multiple data sources. In addition to a Room database, this class could manage remote data sources such as a web server. It is about:

The Layout Inspector in Android Studio allows you to compare your app layout with design mockups, display a magnified or 3D view of your app, and examine details of its layout at runtime. When this is especially useful?

To run your local unit tests, follow these steps:

1.Be sure your project is synchronized with Gradle by clicking Sync Project in the toolbar.

2.Run your test in one of the following ways (select possible): (Choose three.)

Select 3 major components of the Room. (Choose three.)

@Query is the main annotation used in DAO classes. It allows you to perform read/write operations on a database. Each @Query method is verified at compile time, so what happens if there is a problem with the query?

Once your test has obtained a UiObject object, you can call the methods in the UiObject class to perform user interactions on the UI component represented by that object. You can specify such actions as: (Choose four.)

To create a basic JUnit 4 test class, create a class that contains one or more test methods. A test method begins with the specific annotation and contains the code to exercise and verify a single functionality in the component that you want to test. What is the annotation?

Room can export your database's schema information into a JSON file at compile time. What annotation processor property you should set in your app/build.gradle file to export the schema?

For example, we have a file in our assets folder app/src/main/assets/sample_teas.json. To get an InputStream for reading it, from out Context context, we can try do this: