Google Associate-Android-Developer Exam Questions Instant Access

Question 1

What happens when you create a DAO method and annotate it with @Insert?

Example:

@Dao

interface MyDao {

@Insert(onConflict = OnConflictStrategy.REPLACE)

fun insertUsers(vararg users: User)

}

ARoom generates an implementation that inserts all parameters into the database in a single transaction.

BRoom modifies a set of entities, given as parameters, in the database. It uses a query that matches against the primary key of each entity.

CRoom removes a set of entities, given as parameters, from the database. It uses the primary keys to find the entities to delete.

Answer : A

Question 2

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 User WHERE id = ? LIMIT 1",

new Object[]{userId});

User user = rawDao.getUserViaQuery(query);

...

AA method in a Dao annotated class as a raw query method where you can pass the query as a
SupportSQLiteQuery.

BA method in a Dao annotated class as a query method.

CA method in a RoomDatabase class as a query method.

Answer : A

Question 3

For example, our preferences.xml file was added by addPreferencesFromResource (R.xml.preferences). Our preferences.xml file contains such item:

android:title="@string/pref_notification_title" android:summary="@string/pref_notification_summary" android:defaultValue="@bool/pref_notification_default_value" app:iconSpaceReserved="false"/>

In our Fragment, we can dynamically get current notification preference value in this way:

Aval isNotificationOn = PreferenceManager.getDefaultSharedPreferences (context).getBoolean(
context!!.getString(R.string.pref_notification_key), context!!.resources.getBoolean(R.bool.pref_notification_default_value)
)

Bval isNotificationOn = PreferenceManager.getSharedPreferences (context).getBoolean(
context!!.getString(R.string.pref_notification_default_value), context!!.getString(R.string.pref_notification_key),
)

Cval isNotificationOn = PreferenceManager.getSharedPreferences (context).getBoolean(
context!!.resources.getBoolean(R.bool.pref_notification_default_value), context!!.getString(R.string.pref_notification_key)
)

Answer : A

Question 4

When your code execution reaches the breakpoint, Android Studio pauses execution of your app. You can then use the tools in the Debugger tab to identify the state of the app. With Step Into you can

Aexamine the object tree for a variable, expand it in the Variables view. If the Variables view is not visible

Bevaluate an expression at the current execution point

Cadvance to the next line in the code (without entering a method)

Dadvance to the first line inside a method call

Eadvance to the next line outside the current method

Fcontinue running the app normally

Answer : D

Question 5

When using an EditTexts or editable TextViews, or other editable View. What attribute to use to provide a content label for that View?

Aandroid:contentDescription

Bandroid:hint

Candroid:labelFor

Answer : B

https://support.google.com/accessibility/android/answer/7158690?hl=en

Question 6

What is a correct part of an Implicit Intent for sharing data implementation?

Aval sendIntent = Intent(this, UploadService::class.java).apply { putExtra(Intent.EXTRA_TEXT, textMessage)
...

Bval sendIntent = Intent().apply { type = Intent.ACTION_SEND;
...

Cval sendIntent = Intent(this, UploadService::class.java).apply { data = Uri.parse(fileUrl)
...

Dval sendIntent = Intent().apply { action = Intent.ACTION_SEND
...

Answer : D

Create the text message with a string

val sendIntent = Intent().apply { action = Intent.ACTION_SEND

putExtra(Intent.EXTRA_TEXT, textMessage) type = 'text/plain'

}

https://developer.android.com/guide/components/fundamentals

Question 7

For example, we have a BufferedReader reader, associated with the json file through

InputStreamReader. To get a file data we can do this:

Avar line: String? try {
while (reader.readLine().also { line = it } != null) { builder.append(line)
}
val json = JSONObject(builder.toString())
return json
} catch (exception: IOException) {
exception.printStackTrace()
} catch (exception: JSONException) {
exception.printStackTrace()
}

Bvar line: JSONObject ? try {
while (reader.readJSONObject ().also { line = it } != null) {
builder.append(line)
}
val json = JSONObject(builder.toString())
return json
} catch (exception: IOException) {
exception.printStackTrace()
} catch (exception: JSONException) {
exception.printStackTrace()
}

Cvar line: String? try {
while (reader.readLine().also { line = it } != null) { builder.append(line)
}
val json = JSONObject(builder.toString())
return json
} catch (exception: RuntimeException) {
exception.printStackTrace()
} catch (exception: ArrayIndexOutOfBoundsException) {
exception.printStackTrace()
}

Answer : A

Google Associate Android Developer Associate-Android-Developer Exam Questions