ASSOCIATE-ANDROID-DEVELOPER Online Practice Questions and Answers
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()))
}
For example, our preferences.xmlfile was added by addPreferencesFromResource(R.xml.preferences). Our preferences.xmlfile contains such item:
In our Fragment, we can dynamically get current notification preference value in this way:
A. val sortBy = PreferenceManager.getDefaultSharedPreferences(context).getString(context!!.getString(R.string.pref_sort_key),context!!.resources.getBoolean(R.bool.pref_default_sort_value)
)
B. val sortBy = PreferenceManager.getSharedPreferences(context).getString(context!!.getString(R.string.pref_default_sort_value),context!!.getString(R.string.pref_sort_key),
)
C. val sortBy = PreferenceManager.getSharedPreferences(context).getBoolean(context!!.resources.getBoolean(R.bool.pref_default_sort_value),context!!.getString(R.string.pref_sort_key)
)
D. val sortBy = PreferenceManager.getDefaultSharedPreferences(context).getString(context!!.getString(R.string.pref_sort_key),context!!.getString(R.string.pref_default_sort_value)
)
The Testing Pyramid, shown in the Figure, illustrates how your app should include the three categories of tests: small, medium, and large. Small tests are unit tests that :
A. validate your app's behavior one class at a time.
B. validate either interactions between levels of the stack within a module, or interactions between related modules.
C. validate user journeys spanning multiple modules of your app.
Filter logcat messages. If in the filter menu, a filter option "Show only selected application"? means:
A. Display the messages produced by the app code only (the default). Logcat filters the log messages using the PID of the active app.
B. Apply no filters. Logcat displays all log messages from the device, regardless of which process you selected.
C. Create or modify a custom filter. For example, you could create a filter to view log messages from two apps at the same time.
SharedPreferences.Editor is an interface used for modifying values in a SharedPreferences object. All changes you make in an editor are batched, and not copied back to the original SharedPreferences until you call:
A. commit()
B. apply() C. commit() or apply()
The following code snippet shows an example of an Espresso test:
A. @Rule
public void 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
public void 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
public void 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()));
}
Assume that an app includes a default set of graphics and two other sets of graphics, each optimized for a different device setup:
res/drawable/
Contains default graphics. res/drawable-small-land-stylus/
Contains graphics optimized for use with a device that expects input from a stylus and has a QVGA low-density screen in landscape orientation. res/drawable-ja/
Contains graphics optimized for use with Japanese.
What happens if the app runs on a device that is configured to use Japanese and, at the same time, the device happens to be one that expects input from a stylus and has a QVGA low-density screen in landscape orientation?
A. Android loads graphics from res/drawable/
B. Android loads graphics from res/drawable-small-land-stylus/
C. Android loads graphics from res/drawable-ja/
Custom views and directional controller clicks. In general, you should send an AccessibilityEvent whenever the content of your custom view changes. For example, if a text value was changed in your custom view, you should emit an event of this type:
A. TYPE_WINDOWS_CHANGED
B. TYPE_VIEW_CONTEXT_CLICKED
C. TYPE_WINDOWS_CHANGED
D. TYPE_VIEW_TEXT_CHANGED
Content labels. What attribute to use to indicate that a View should act as a content label for another View?
A. android:contentDescription
B. android:hint
C. android:labelFor
In application theme style, flag windowDrawsSystemBarBackgrounds (
A. whether this window should have an Action Bar in place of the usual title bar.
B. whether there should be no title on this window.
C. that this window should not be displayed at all.
D. whether this is a floating window.
E. whether this Window is responsible for drawing the background for the system bars.