Android SharedPreferences
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Questions and Answers

In Android, which method is used to send a broadcast to all apps that have registered to receive it?

  • sendBroadcast (correct)
  • unregisterReceiver
  • registerReceiver
  • sendOrderedBroadcast
  • What is necessary to use a feature that requires user permission?

  • Requesting the permission at runtime
  • Adding a permission to the AndroidManifest.xml file
  • Declaring the permission in the build.gradle file
  • Both a and b (correct)
  • What is the main purpose of the Android NDK?

  • To implement native code in Android apps (correct)
  • To develop native apps for Android
  • To develop cross-platform apps for Android and iOS
  • To develop games for Android
  • How can you switch between Day and Night themes in an Android app?

    <p>Using a DayNight theme</p> Signup and view all the answers

    What is the purpose of the Places API?

    <p>To provide location-based services in an Android app</p> Signup and view all the answers

    What is the purpose of using a BroadcastReceiver in an Android app?

    <p>To receive notifications from the system</p> Signup and view all the answers

    In Android, which permission is necessary to use the device's camera?

    <p>android.permission.CAMERA</p> Signup and view all the answers

    What is the purpose of the getPreferences() method in an Android app?

    <p>To get a SharedPreferences object</p> Signup and view all the answers

    In Android, what is the purpose of the Intent class?

    <p>To start an Activity</p> Signup and view all the answers

    What is the purpose of the gradle build system in an Android app?

    <p>To build and package the app</p> Signup and view all the answers

    What is the purpose of Setup Android Studio in Section 2.1 of Chapter 2?

    <p>To view and add shortcuts in Android Studio</p> Signup and view all the answers

    What is the purpose of the Spannable TextView in Section 4.1 of Chapter 4?

    <p>To create a TextView with styled text</p> Signup and view all the answers

    What is the purpose of the AutoCompleteTextView in Section 5.1 of Chapter 5?

    <p>To create a Custom ArrayAdapter with a ClickListener and Filter</p> Signup and view all the answers

    What is the purpose of the Granularity in Section 6.1 of Chapter 6?

    <p>To customize the autosizing of a TextView</p> Signup and view all the answers

    What is the purpose of the CoordinatorLayout in Section 8.11 of Chapter 8?

    <p>To create a layout that can coordinate with other views</p> Signup and view all the answers

    What is the purpose of the TextInputLayout in Section 10.1 of Chapter 10?

    <p>To wrap an EditText in a floating label and error message</p> Signup and view all the answers

    What is the purpose of the SwipeDismissBehavior in Section 11.2 of Chapter 11?

    <p>To create a behavior that can dismiss a view with a swipe gesture</p> Signup and view all the answers

    What is the purpose of the TabLayout in Section 12.1 of Chapter 12?

    <p>To create a layout with multiple tabs</p> Signup and view all the answers

    What is the purpose of the ViewPager in Section 13.1 of Chapter 13?

    <p>To create a layout that can swipe between multiple pages</p> Signup and view all the answers

    What is the purpose of the CardView in Section 14.1 of Chapter 14?

    <p>To create a layout that can display a card with a shadow</p> Signup and view all the answers

    Study Notes

    Here are the study notes for the provided text:

    • SharedPreferences*
    • Store, retrieve, remove, and clear data from SharedPreferences
    • Can be used to store primitive data types
    • Intent*
    • Can be used to start an activity, service, or broadcast receiver
    • Can be used to pass data between activities
    • Supports various request codes for different operations
    • Fragments*
    • Can be used to pass data from an activity to a fragment
    • newInstance() pattern is used to pass data to a fragment
    • Gradle*
    • Used for building and managing Android projects
    • Supports various build types and product flavors
    • Can be used to manage dependencies and libraries
    • FileIO*
    • Can be used to read and write files to internal and external storage
    • Supports various file formats and compression algorithms
    • Camera and Gallery*
    • Supports various camera and gallery APIs
    • Can be used to take photos, select images, and perform image processing
    • Bluetooth and BLE API*
    • Supports various Bluetooth and BLE operations
    • Can be used to connect, discover, and communicate with devices
    • Runtime Permissions*
    • Introduced in Android 6.0 (API 23)
    • Used to request permissions at runtime
    • Supports various permission types and request codes
    • Alert Dialog and Dialog Fragment*
    • Supports various dialog types and styles
    • Can be used to display alerts, prompts, and confirmations
    • Glide*
    • A popular image loading library for Android
    • Supports various image formats, caching, and transformations
    • GreenDAO*
    • A popular ORM (Object-Relational Mapping) library for Android
    • Supports various database operations, caching, and relationships
    • Handler and BroadcastReceiver*
    • Supports various messaging and event handling mechanisms
    • Can be used to handle messages, broadcasts, and intents
    • UI Lifecycle*
    • Supports various UI lifecycle events and callbacks
    • Can be used to manage UI state and resources
    • HttpURLConnection*
    • A built-in HTTP client for Android
    • Supports various HTTP methods, headers, and caching
    • Callback URL*
    • Used for redirecting users to a callback URL after authorization
    • Supports various OAuth and authentication flows
    • Snackbar and Toast*
    • Supports various UI feedback and notification mechanisms
    • Can be used to display messages, alerts, and confirmations
    • Widgets*
    • Supports various UI components and layout mechanisms
    • Can be used to create custom widgets and layouts
    • MediaPlayer and MediaStore*
    • Supports various media playback and management mechanisms
    • Can be used to play, pause, and control media playback
    • MediaSession*
    • Supports various media session and playback mechanisms
    • Can be used to control media playback and volume
    • Multidex and Dex Method Limit*
    • Supports various multidex and method counting mechanisms
    • Can be used to manage method count and prevent method limit errors
    • Data Synchronization with Sync Adapter*
    • Supports various data synchronization mechanisms
    • Can be used to synchronize data between devices and services
    • PorterDuff Mode*
    • Supports various image processing and masking mechanisms
    • Can be used to apply effects, filters, and transformations to images
    • Menu*
    • Supports various menu and navigation mechanisms
    • Can be used to create custom menus and navigation flows
    • Picasso*
    • A popular image loading library for Android
    • Supports various image formats, caching, and transformations
    • RoboGuice*
    • A popular injection framework for Android
    • Supports various injection mechanisms and scopes
    • ACRA*
    • A popular crash reporting and error tracking library for Android
    • Supports various error reporting and tracking mechanisms
    • Parcelable*
    • Supports various serialization and deserialization mechanisms
    • Can be used to pass data between activities and components
    • Retrofit2*
    • A popular REST client library for Android
    • Supports various HTTP methods, headers, and caching
    • ButterKnife*
    • A popular view injection library for Android
    • Supports various view binding and injection mechanisms
    • Volley*
    • A popular network and HTTP client library for Android
    • Supports various HTTP methods, caching, and request queueing### Android Notes for Professionals

    Chapter 1: Getting Started with Android

    • Creating a new project in Android Studio
    • Setting up Android Studio
    • Android programming without an IDE
    • Application fundamentals
    • Setting up an Android Virtual Device (AVD)

    Chapter 2: Android Studio

    • Setting up Android Studio
    • View and add shortcuts in Android Studio
    • Useful Android Studio shortcuts
    • Improving Android Studio performance
    • Enabling or disabling blank line copy
    • Filtering logs from UI
    • Creating filters configuration
    • Creating an assets folder

    Chapter 4: TextView

    • Spannable TextView
    • Strikethrough TextView
    • TextView with an image
    • Making RelativeSizeSpan align to top
    • Pinch zoom on TextView
    • TextView with different text sizes
    • Theme and style customization
    • Customizing TextView

    Chapter 5: AutoCompleteTextView

    • Using an AutoCompleteTextView with a custom adapter and click listener
    • Simple, hard-coded AutoCompleteTextView

    Chapter 6: Autosizing TextViews

    • Autosizing TextView granularity
    • Preset sizes for autosizing TextViews

    Chapter 7: ListView

    • Custom ArrayAdapter for ListView
    • Basic ListView with an ArrayAdapter
    • Filtering with CursorAdapter

    Chapter 8: Layouts

    • LayoutParams in Android
    • Gravity and layout gravity
    • CoordinatorLayout scrolling behavior
    • Percent layouts in Android
    • View weight in Android
    • Creating a LinearLayout programmatically
    • Using a LinearLayout
    • RelativeLayout
    • FrameLayout
    • GridLayout

    Chapter 9: ConstraintLayout

    • Adding ConstraintLayout to a project
    • Chains in ConstraintLayout

    Chapter 10: TextInputLayout

    • Basic usage of TextInputLayout
    • Password visibility toggles
    • Adding character counting
    • Handling errors
    • Customizing TextInputLayout appearance
    • TextInputEditText

    Chapter 11: CoordinatorLayout and Behaviors

    • Creating a simple behavior
    • Using SwipeDismissBehavior

    Chapter 12: TabLayout

    • Using TabLayout without a ViewPager

    Chapter 13: ViewPager

    • ViewPager with a dots indicator
    • Basic ViewPager usage with fragments
    • ViewPager with a PreferenceFragment

    Chapter 14: CardView

    • Getting started with CardView
    • Adding a ripple animation
    • Customizing CardView
    • Using images as backgrounds on pre-Lollipop devices
    • Animating CardView background color

    Chapter 15: NavigationView

    • Adding a NavigationView
    • Adding underlines to menu elements
    • Adding separators to a menu
    • Using a DividerItemDecoration

    Chapter 16: RecyclerView

    • Adding a RecyclerView
    • Smoother loading of items
    • RecyclerView with DataBinding
    • Animating data changes
    • Popup menu with RecyclerView
    • Using multiple ViewHolders
    • Filtering items in RecyclerView
    • Dragging and dropping in RecyclerView
    • Showing a default view until items load

    Chapter 17: RecyclerView Decorations

    • Adding dividers to RecyclerView
    • Drawing a separator
    • Using DividerItemDecoration
    • Item offsets with ItemDecoration
    • ItemOffsetsDecoration for GridLayoutManager

    Chapter 18: RecyclerView onClickListeners

    • Kotlin and RxJava example
    • RecyclerView click listener
    • Another way to implement Item Click Listener

    Chapter 19: RecyclerView and LayoutManagers

    • Adding a header view to RecyclerView with a GridLayout manager
    • GridLayoutManager with dynamic span count
    • Simple list with LinearLayoutManager
    • StaggeredGridLayoutManager

    Chapter 20: Pagination in RecyclerView

    • MainActivity pagination example

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    Test your knowledge of SharedPreferences in Android development, including reading, writing, and retrieving values.

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