E. Answers to Quiz Questions
Chapter 1
1. False
2. onPreExecute()
3. executeOnExecutor(AsyncTask.SERIAL_EXECUTOR)
4. The Loader class
5. False
Chapter 2
1. False
2. bindService()
3. A remote interface
4. False
5. IntentService
Chapter 3
1. False
2. ContentValues
3. setTransactionSuccessful()
4. True
5. Store the location as a file path or URI
Chapter 4
1. onCreate(), delete(), getType(), insert(), query(), update()
2. content://
3. False
4. False
Chapter 5
1. Normal and ordered
2. False
3. Register to receive broadcasts and implement a broadcast receiver class
4. ACTION_MY_PACKAGE_REPLACED
5. True
Chapter 6
1. getSystemService(Context.NOTIFICATION_SERVICE);
2. False
3. True
4. setNumber()
5. Causes notifications to be canceled when the user clicks them
Chapter 7
1. False
2. always, ifRoom, never, and withText
3. setDisplayHomeAsUpEnabled(true)
4. hide()
5. setTheme(R.style.themeToSet)
Chapter 8
1. True
2. ViewTreeObserver
3. GestureDetector and ScaleGestureDetector
4. onScroll()
5. False
Chapter 9
1. False
2. android.speech.RecognizerIntent
3. LANGUAGE_MODEL_WEB_SEARCH
4. False
5. shutdown()
Chapter 10
1. True
2. Use flexible layouts; use dimension values; provide alternative resources; use various resource types to your advantage; adjust the UI when hardware features aren’t present on the device; use Fragment-based layouts
3. False
4. Chrome web apps and native Android apps
5. Stack them
Chapter 11
1. False
2. java.net.HttpURLConnection
3. True
4. ConnectivityManager
5. android.permission.ACCESS_NETWORK_STATE
Chapter 12
1. True
2. android.permission.INTERNET
3. WebChromeClient
4. @JavascriptInterface
5. True
Chapter 13
1. True
2. SurfaceView
3. getSupportedFocusModes()
4. True
5. android.permission.RECORD_AUDIO
Chapter 14
1. android.permission.READ_PHONE_STATE
2. TelephonyManager telManager = (TelephonyManager)
getSystemService(Context.TELEPHONY_SERVICE);
3. False
4. You must add an Activity, an SMS BroadcastReceiver, an MMS BroadcastReceiver, and a Service, each with special options
5. False
Chapter 15
1. False
2. getSystemService(Context.SENSOR_SERVICE)
3. sensorManagerObj.getDefeaultSensor(Sensor.TYPE_STEP_COUNTER)
4. onSensorChanged()
5. False
Chapter 16
1. False
2. android.permission.BLUETOOTH and android.permission.BLUETOOTH_ADMIN respectively
3. UsbManager
4. NFC Data Exchange Format
5. startScan()
Chapter 17
1. False
2. ACCESS_FINE_LOCATION
3. getLastLocation()
4. False
5. getMap()
Chapter 18
1. False
2. 4096 bytes
3. False
4. A broadcast receiver
5. True
Chapter 19
1. Where apps are published free of charge but contain content for purchase
2. A role-playing game with a shop where users can purchase items; wallpaper, ringtone, music, or video download application, pay per download; photo filter app, pay per filter; for more see all the options as detailed earlier in the “What Is In-App Billing?” section
3. False
4. False
Chapter 20
1. False
2. UA
3. google-play-services_lib
4. INTERNET, ACCESS_NETWORK_STATE
5. False
Chapter 21
1. Google Play Developer Console
2. False
3. CLIENT_PLUS
4. If a particular achievement builds on another required achievement
5. Four-byte arrays each worth 256 kilobytes for a total of 1024 kilobytes
6. False
Chapter 22
1. True
2. getHeight() and getWidth()
3. Anti-aliasing makes a graphic look smoother, and use the Paint.ANTI_ALIAS_FLAG
4. True
5. Application, Activity, Window, View
Chapter 23
1. Frame-by-frame animation
2. Alpha, rotate, scale, translate
3. False
4. AnticipateInterpolator
5. android.transition
Chapter 24
1. <uses-feature android:glEsVersion=”0x00020000” />
2. False
3. SurfaceView and GLSurfaceView
4. False
5. True
Chapter 25
1. False
2. C and C++
3. ndk-gdb
4. ndk-build
5. False
Chapter 26
1. Provide an XML App Widget configuration, determine whether the App Widget requires a configuration Activity, provide an AppWidgetProvider class implementation, provide a Service class implementation to handle App Widget content updates (as needed), and update the application Android manifest file to register the App Widget provider information and any information about the update service
2. minWidth and minHeight
3. False
4. (70 * n) – 30, where n is the number of cells you want the App Widget to occupy
5. False
6. Provide an XML wallpaper configuration, provide a WallpaperService implementation, and update the application Android manifest file to register the wallpaper Service with the appropriate permissions
7. android.permission.BIND_WALLPAPER
8. <uses-feature android:name=”android.software.live_wallpaper” />
Chapter 27
1. True
2. searchSuggestThreshold
3. android:voiceSearchMode="showVoiceSearchButton|launchWebSearch"
4. False
5. android:includeInGlobalSearch="true"
Chapter 28
1. True
2. android:requiredAccountType
3. AbstractThreadedSyncAdapter
4. onBackup() and onRestore()
5. False
Chapter 29
1. True
2. /res/layout-fr
3. /res/drawable-fr-rCA
4. False
5. Add android:supportsRtl=true to the <application> tag in the Android manifest file
Chapter 30
1. Use secure coding practices, obfuscate your binary code using ProGuard, and leverage the LVL
2. False
3. Add the line proguard.config=proguard.cfg to the file project.properties
4. False
5. mapping.txt
Chapter 31
1. True
2. Android Runtime
3. <uses-feature android:glEsVersion=”0x00030001” />
4. False
5. elevation
Appendix A
1. adb devices
2. False
3. -d
4. False
5. bmgr backup <package>
Appendix B
1. /data/data/<application package name>/databases/<databasename>
2. False
3. .schema <tablename>
4. INTEGER, REAL, TEXT, BLOB
5. False
Appendix C
1. False
2. for (;;) {/* Loop infinitely */}
3. for (String str : aStrs) {/* Loop over str */}
4. int value = 0; value += 1;
5. bool value = true ? true : false; // one possibility
Appendix D
1. Windows, Mac OS X, and Linux
2. False
3. Groovy
4. True
5. ALT + ENTER