(True/False) By default, animations in an animation set are applied sequentially (i.e.,
one after the other).
(True/False) Activity is an indirect subclass of Context.
(True/False) High-resolution images do not scale well.
(True/False) You must define Drawables in the project’s drawable folders for all device
sizes and resolutions to be used with your app.
(True/False) Like an Activity, a Fragment can place items in the app’s action bar and
options menu. To do so, the Fragment must call its setHasOptionsMenu method with
the argument true.
(True/False) The android:fromXDeltaattribute is the View’s offset when a translate
animation starts and the android:toXDeltaattribute is the View’s offset when the
animation ends.
(True/False) According to Google, apps that use in-app billing earn profoundly more
revenue than paid apps alone.
(True/False) Once a database is opened successfully, it will be cached by the operating
system to improve the performance of future database interactions.
(True/False) A Toast displays a message that remains on the screen until the user
dismisses it. Toasts are often used to display minor error messages or informational
messages.
SQLite is one of the world’s most widely deployed database engines. Database queries
are performed with Structured Query Language (SQL) and query results are managed
via a ________ (package android-.database).
As you build your app’s GUI and add resources (such as strings in the strings.xml file or
views in the activity_main.xml file) to your app, the IDE generates a class named
________ that contains nested classes representing each type of resource in your
project’s res folder.
To sell your apps on Google Play, you”ll need a ________ merchant account, available
to Google Play developers in 32 countries.
Class ________ of package android.content is used to manipulate persistent key”value
pairs that are stored in files associated with the app.
If the Activity needs to interact with a Fragment that’s declared in the Activity’s layout
and has an Id, the Activity can call FragmentManager method ________ to obtain a
reference to the specified Fragment.
A List Preference’s items are ________, whereas any number of items can be selected in
a Multi Select List Preference.
When you first create a project, the IDE opens the app’s ________ file in the Graphical
Layout editor.
When you call setContentView and pass the constant R.layout.activity_main, Android
________the GUI from activity_main.xml.
You can use a ________ object to perform an action after a delay.
Resource subfolder names that begin with animator contain XML files that define
________, which change the value of a property of an object over time.
Class DialogInterface of package android.content contains the nested interface
________. We implement this interface, for example, to handle the events that occur
when the user touches a button on an AlertDialog.
The Android design guidelines specify that the minimum recommended size for a
touchable item on the screen is ________.
You can create a customview by extending class ________ or one of its subclasses.
Unlike many Java apps, Android apps don”t have a main method. Instead, they have
four types of executable components________, ________, ________ and ________.
________ method getDefaultSharedPreferences returns a reference to the
SharedPreferences object representing the app’s preferences, and SharedPreferences
method registerOnSharedPreferenceChangeListener registers the listener.
It’s good practice to define all your literal strings values in the ________ file (located in
the app’s res/values folder).