Google Associate-Android-Developer Exam Practice Test Instant Access

Question 1

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.)

Aclick() : Clicks the center of the visible bounds of the UI element.

Btouch() : Touch the center of the visible bounds of the UI element.

CdragTo() : Drags this object to arbitrary coordinates.

DmoveTo() : Move this object to arbitrary coordinates.

EsetText() : Sets the text in an editable field, after clearing the field's content. Conversely, the
clearTextField() method clears the existing text in an editable field.

FswipeUp() : Performs the swipe up action on the UiObject. Similarly, the swipeDown(), swipeLeft(), and swipeRight() methods perform corresponding actions.

Answer : A, C, E, F

Question 2

LiveData.postValue() and LiveData.setValue() methods have some differences. So if you have a following code executed in the main thread:

liveData.postValue("a"); liveData.setValue("b");

What will be the correct statement?

AThe value 'b' would be set at first and later the main thread would override it with the value 'a'.

BThe value 'a' would be set at first and later the main thread would override it with the value 'b'.

CThe value 'b' would be set at first and would not be overridden with the value 'a'.

DThe value 'a' would be set at first and would not be overridden with the value 'b'.

Answer : B

Question 3

What statements about InputStreamReader (java.io.InputStreamReader) are correct? (Choose two.)

AAn InputStreamReader is a bridge from byte streams to character streams: It reads bytes and decodes them into characters using a specified charset. The charset that it uses may be specified by name or may be given explicitly, or the platform's default charset may be accepted.

BAn InputStreamReader is a bridge from character streams to byte streams: It reads characters using a specified charset and encodes them into bytes. The charset that it uses may be specified by name or may be given explicitly, or the platform's default charset may be accepted.

CEach invocation of one of an InputStreamReader's read() methods may cause one or more bytes to be read from the underlying byte-input stream. To enable the efficient conversion of bytes to characters, more bytes may be read ahead from the underlying stream than are necessary to satisfy the current read operation.

DNo any invocation of one of an InputStreamReader's read() methods can cause some bytes to be read from the underlying byte-input stream.

Answer : A, C

Question 4

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.)

ATo run a single test, open the Project window, and then right-click a test and click Run .

BTo test all methods in a class, right-click a class or method in the test file and click Run .

CTo run all tests in a directory, right-click on the directory and select Run tests .

DTo run all tests in Project, open the Project window, and then right-click a test and click Run .

Answer : A, B, C

Question 5

The following code snippet shows an example of an Espresso test:

A@Rule
fun greeterSaysHello() {
onView(withId(R.id.name_field)).do(typeText('Steve'))
onView(withId(R.id.greet_button)).do(click())
onView(withText('Hello Steve!')).check(matches(isDisplayed()))
}

B@Test
fun greeterSaysHello() {
onView(withId(R.id.name_field)).perform(typeText('Steve'))
onView(withId(R.id.greet_button)).perform(click())
onView(withText('Hello Steve!')).check(matches(isDisplayed()))
}

C@Test
fun greeterSaysHello() {
onView(withId(R.id.name_field)).do(typeText('Steve'))
onView(withId(R.id.greet_button)).do(click())
onView(withText('Hello Steve!')).compare(matches(isDisplayed()))
}

Answer : B

Question 6

Android Tests. You can use the childSelector() method to nest multiple UiSelector instances. For example, the following code example shows how your test might specify a search to find the first ListView in the currently displayed UI, then search within that ListView to find a UI element with the text property Apps.

What is the correct sample?

Aval appItem: UiObject = device.findObject( UiSelector().className(ListView.class)
.instance(1)
.childSelector(
UiSelector().text('Apps')
)
)

Bval appItem: UiObject = device.findObject( UiSelector().className('android.widget.ListView')
.instance(0)
.childSelector(
UiSelector().text('Apps')
)
)

Cval appItem: UiObject = device.findObject( UiSelector().className('android.widget.ListView')
.instance(
UiSelector().text('Apps')
)
)

Answer : B

Question 7

For example, we have a file in our raw folder app/src/main/res/raw/sample_teas.json. To get an

InputStream for reading it, from out Context context, we can do this:

AInputStream input = context.openRawResource(R.raw.sample_teas);

BInputStream input = context.getRawResource(R.raw.sample_teas);

CInputStream input = context.getResources().openRawResource(R.raw.sample_teas);

Answer : C

Google Associate-Android-Developer Associate Android Developer Exam Practice Test