Exam 6: Cannon Game App

Which of the next three statements is false?

Each SurfaceView subclass should implement the interface ________, which contains methods that are called when the SurfaceView is created, changed (e.g., its size or orientation changes) or destroyed.

View method onTouchEvent determines when the user touches the screen. The MotionEvent parameter contains information about the event that occurred. If the user touched the screen, the parameter’s value is ________.

Pass ________ to an AudioAttributes.Builder object’s setUsage method to indicate that the audio is being used as game audio.

Only one thread at a time can draw to a SurfaceView. To ensure this, you must first lock the SurfaceHolder by ________.

To process simple touch events in an app, override View method onTouchEvent, then use constants from class ________ (package android.view) to test which type of event occurred and process it accordingly.

All updates to an app's user interface must be performed in the GUI thread of execution, because GUI components are not ________.

A dialog must be displayed from the GUI thread. You call Activity method ________ to specify a Runnable that should execute in the GUI thread.

Games, often require complex logic that should be performed in separate threads of execution, and those threads often need to draw to the screen. For such cases, Android provides class ________—a subclass of View that provides a dedicated drawing area in which other threads can display graphics on the screen in a thread-safe manner.

Game developers often use full-screen themes, such as Theme.Material.Light.NoActionBar.Fullscreen That display only the bottom system bar, which in landscape orientation appears at the screen's ________.

Which of the following statements is false?

Canvas's ________ method draws a circle.

The Android documentation recommends that games use the ________ to play sounds, because that stream’s volume can be controlled via the device’s volume buttons.

You can terminate a Thread by calling its setRunning method with the argument ________.

Class SoundPool's ________ method gives the resources associated with a SoundPool back to the system.

Game-development frameworks typically provide sophisticated ________ collision-detection capabilities.

Which of the following statements is false?

Class View’s onSizeChanged method is called whenever the View’s size chang-es, including when the View is first added to the View hierarchy as the layout is inflated. The method receives the View’s new width and height and its old width and height. The first time this method is called, the old width and height are ________ and ________.

Which of the next three statements is false?

Method surfaceCreated is called when the SurfaceView is created-e.g., ________.