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Android, How To Program 3rd Edition By Deitel – Test Bank

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Q1. Media files (such as the sounds we used in the Cannon Game app), are placed in the app’s resource folder ________. 1. res/media 2. res/sounds 3. res/raw 4. res/multimedia Answer: c. res/raw  Activity and Fragment Lifecycle Methods Q1. Which of the following statements is false? 1. When an Activity is shut down, its onDestroy method is called, which in turn calls the onDestroy methods of all the Fragments hosted by the Activity. 2. We used the onDestroy method in the MainActivityFragment to release the CannonView’s sound resources. 3. Method onDestroy is guaranteed to be called, so it can be used to release resources and to save critical data. 4. The Android documentation recommends that you save data in methods onPause or onSaveInstanceState. Answer: c. Method onDestroy is guaranteed to be called, so it can be used to release resources and to save critical data. Actually, method onDestroy is not guaranteed to be called, so it should be used only to release resources, not to save critical data.  Overriding View Method onTouchEvent Q1. 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. 1. Event 2. MotionEvent 3. Motion 4. View Answer: b. MotionEvent  Adding Sound with SoundPool and AudioManager Q1. An app’s sound effects are managed with a(n) ________ (package android.media), which can be used to load, play and unload sounds. 1. Effects 2. SoundPool 3. EffectsPool 4. SoundManager Answer: SoundPool Q2. Sounds are played using one of Android’s audio- ________ for alarms, music, notifications, phone rings, system sounds, phone calls and more. 1. streams 2. players 3. tools 4. None of the above Answer: a. streams Q3. 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. 1. phone audio stream 2. alarm audio stream 3. notifications audio stream 4. music audio stream Answer: d. music audio stream Q4. Which of the following statements is false? 1. You configure and create a SoundPool object using a SoundPool.Builder object. 2. You use an AudioAttributes.Builder object to create an AudioAttributes object that will be associated with the SoundPool. 3. AudioAttributes’s setGameAudio method is used to designate the audio as game audio. 4. Activity’s setVolumeControlStream method allows the game’s volume to be controlled with the device’s volume buttons. Answer: c. AudioAttributes’s setGameAudio method is used to designate the audio as game audio. Actually, AudioAttributes’s setUsage method is used to designate the audio as game audio.  Frame-by-Frame Animation with Threads, SurfaceView and SurfaceHolder

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