Contains high-level classes encapsulating the overall Android application model.
An Android application is defined using one or more of Android's four core application
components. Two such application components are defined in this package: Activity and Service. The other two components are from the android.content package: BroadcastReceiver and ContentProvider.
An Activity is an application component that provides a screen with which
users can interact in order to do something, such as dial the phone, take a photo, send an email, or
view a map. An activity can start other activities, including activities that live in separate
applications.
A Service is an application component that can perform
long-running operations in the background without a user interface. For example, a service
can handle network transactions, play music, or work with a content provider without the user being
aware of the work going on.
The Fragment class is also an important part of an application's
design—especially when designing for large screen devices, such as tablets. A fragment defines
a distinct part of an activity's behavior, including the associated UI. It has its own lifecycle
that is similar to that of the activity and can exist alongside other fragments that are embedded in
the activity. While an activity is running, you can add and remove fragments and include each
fragment in a back stack that's managed by the activity—allowing the user to navigate
backwards through the fragment states, without leaving the activity.
This package also defines application utilities, such as dialogs, notifications, and the action bar.
For information about using some the classes in this package, see the following documents: Activities, Services, Fragments, Using the Action Bar, Creating Dialogs, and Notifying the User.
| ActionBar.OnMenuVisibilityListener | Listener for receiving events when action bar menus are shown or hidden. |
| ActionBar.OnNavigationListener | Listener interface for ActionBar navigation events. |
| ActionBar.TabListener | Callback interface invoked when a tab is focused, unfocused, added, or removed. |
| Application.ActivityLifecycleCallbacks | |
| Application.OnProvideAssistDataListener | Callback interface for use with registerOnProvideAssistDataListener(Application.OnProvideAssistDataListener)
and unregisterOnProvideAssistDataListener(Application.OnProvideAssistDataListener). |
| AppOpsManager.OnOpChangedListener | Callback for notification of changes to operation state. |
| DatePickerDialog.OnDateSetListener | The callback used to indicate the user is done filling in the date. |
| FragmentBreadCrumbs.OnBreadCrumbClickListener | Interface to intercept clicks on the bread crumbs. |
| FragmentManager.BackStackEntry | Representation of an entry on the fragment back stack, as created
with FragmentTransaction.addToBackStack(). |
| FragmentManager.OnBackStackChangedListener | Interface to watch for changes to the back stack. |
| KeyguardManager.OnKeyguardExitResult | Callback passed to exitKeyguardSecurely(KeyguardManager.OnKeyguardExitResult) to notify
caller of result. |
| LoaderManager.LoaderCallbacks<D> | Callback interface for a client to interact with the manager. |
| PendingIntent.OnFinished | Callback interface for discovering when a send operation has completed. |
| SearchManager.OnCancelListener | See setOnCancelListener(SearchManager.OnCancelListener) for configuring your activity to monitor
search UI state. |
| SearchManager.OnDismissListener | See setOnDismissListener(SearchManager.OnDismissListener) for configuring your activity to monitor
search UI state. |
| TimePickerDialog.OnTimeSetListener | The callback interface used to indicate the user is done filling in the time (they clicked on the 'Set' button). |
| UiAutomation.AccessibilityEventFilter | Listener for filtering accessibility events. |
| UiAutomation.OnAccessibilityEventListener | Listener for observing the AccessibilityEvent stream. |
| ActionBar | A window feature at the top of the activity that may display the activity title, navigation modes, and other interactive items. |
| ActionBar.LayoutParams | Per-child layout information associated with action bar custom views. |
| ActionBar.Tab | A tab in the action bar. |
| Activity | An activity is a single, focused thing that the user can do. |
| ActivityGroup |
This class was deprecated
in API level 13.
Use the new Fragment and FragmentManager APIs
instead; these are also
available on older platforms through the Android compatibility package.
|
| ActivityManager | Interact with the overall activities running in the system. |
| ActivityManager.MemoryInfo | Information you can retrieve about the available memory through
getMemoryInfo(ActivityManager.MemoryInfo). |
| ActivityManager.ProcessErrorStateInfo | Information you can retrieve about any processes that are in an error condition. |
| ActivityManager.RecentTaskInfo | Information you can retrieve about tasks that the user has most recently started or visited. |
| ActivityManager.RunningAppProcessInfo | Information you can retrieve about a running process. |
| ActivityManager.RunningServiceInfo | Information you can retrieve about a particular Service that is currently running in the system. |
| ActivityManager.RunningTaskInfo | Information you can retrieve about a particular task that is currently "running" in the system. |
| ActivityOptions | Helper class for building an options Bundle that can be used with
Context.startActivity(Intent, Bundle) and related methods. |
| AlarmManager | This class provides access to the system alarm services. |
| AlertDialog | A subclass of Dialog that can display one, two or three buttons. |
| AlertDialog.Builder | |
| AliasActivity | Stub activity that launches another activity (and then finishes itself) based on information in its component's manifest meta-data. |
| Application | Base class for those who need to maintain global application state. |
| ApplicationErrorReport | Describes an application error. |
| ApplicationErrorReport.AnrInfo | Describes an application not responding error. |
| ApplicationErrorReport.BatteryInfo | Describes a battery usage report. |
| ApplicationErrorReport.CrashInfo | Describes an application crash. |
| ApplicationErrorReport.RunningServiceInfo | Describes a running service report. |
| AppOpsManager | API for interacting with "application operation" tracking. |
| DatePickerDialog | A simple dialog containing an DatePicker. |
| Dialog | Base class for Dialogs. |
| DialogFragment | A fragment that displays a dialog window, floating on top of its activity's window. |
| DownloadManager | The download manager is a system service that handles long-running HTTP downloads. |
| DownloadManager.Query | This class may be used to filter download manager queries. |
| DownloadManager.Request | This class contains all the information necessary to request a new download. |
| ExpandableListActivity | An activity that displays an expandable list of items by binding to a data source implementing the ExpandableListAdapter, and exposes event handlers when the user selects an item. |
| Fragment | A Fragment is a piece of an application's user interface or behavior
that can be placed in an Activity. |
| Fragment.SavedState | State information that has been retrieved from a fragment instance
through FragmentManager.saveFragmentInstanceState. |
| FragmentBreadCrumbs | Helper class for showing "bread crumbs" representing the fragment stack in an activity. |
| FragmentManager | Interface for interacting with Fragment objects inside of an
Activity
Developer GuidesFor more information about using fragments, read the Fragments developer guide. |
| FragmentTransaction | API for performing a set of Fragment operations. |
| Instrumentation | Base class for implementing application instrumentation code. |
| Instrumentation.ActivityMonitor | Information about a particular kind of Intent that is being monitored. |
| Instrumentation.ActivityResult | Description of a Activity execution result to return to the original activity. |
| IntentService | IntentService is a base class for Services that handle asynchronous
requests (expressed as Intents) on demand. |
| KeyguardManager | Class that can be used to lock and unlock the keyboard. |
| KeyguardManager.KeyguardLock |
This class was deprecated
in API level 13.
Use FLAG_DISMISS_KEYGUARD
and/or FLAG_SHOW_WHEN_LOCKED
instead; this allows you to seamlessly hide the keyguard as your application
moves in and out of the foreground and does not require that any special
permissions be requested.
Handle returned by newKeyguardLock(String) that allows
you to disable / reenable the keyguard.
|
| LauncherActivity | Displays a list of all activities which can be performed for a given intent. |
| LauncherActivity.IconResizer | Utility class to resize icons to match default icon size. |
| LauncherActivity.ListItem | An item in the list |
| ListActivity | An activity that displays a list of items by binding to a data source such as an array or Cursor, and exposes event handlers when the user selects an item. |
| ListFragment | A fragment that displays a list of items by binding to a data source such as an array or Cursor, and exposes event handlers when the user selects an item. |
| LoaderManager | Interface associated with an Activity or Fragment for managing
one or more Loader instances associated with it. |
| LocalActivityManager |
This class was deprecated
in API level 13.
Use the new Fragment and FragmentManager APIs
instead; these are also
available on older platforms through the Android compatibility package.
|
| MediaRouteActionProvider | The media route action provider displays a media route button
in the application's ActionBar to allow the user to select routes and
to control the currently selected route. |
| MediaRouteButton | |
| NativeActivity | Convenience for implementing an activity that will be implemented purely in native code. |
| Notification | A class that represents how a persistent notification is to be presented to
the user using the NotificationManager. |
| Notification.Action | Structure to encapsulate a named action that can be shown as part of this notification. |
| Notification.BigPictureStyle | Helper class for generating large-format notifications that include a large image attachment. |
| Notification.BigTextStyle | Helper class for generating large-format notifications that include a lot of text. |
| Notification.Builder | Builder class for Notification objects. |
| Notification.InboxStyle | Helper class for generating large-format notifications that include a list of (up to 5) strings. |
| Notification.Style | An object that can apply a rich notification style to a Notification.Builder
object. |
| NotificationManager | Class to notify the user of events that happen. This is how you tell the user that something has happened in the background. |
| PendingIntent | A description of an Intent and target action to perform with it. |
| Presentation | Base class for presentations. |
| ProgressDialog | A dialog showing a progress indicator and an optional text message or view. |
| SearchableInfo | Searchability meta-data for an activity. |
| SearchManager | This class provides access to the system search services. |
| Service | A Service is an application component representing either an application's desire to perform a longer-running operation while not interacting with the user or to supply functionality for other applications to use. |
| TabActivity |
This class was deprecated
in API level 13.
New applications should use Fragments instead of this class;
to continue to run on older devices, you can use the v4 support library
which provides a version of the Fragment API that is compatible down to
DONUT.
|
| TaskStackBuilder | Utility class for constructing synthetic back stacks for cross-task navigation on Android 3.0 and newer. |
| TimePickerDialog | A dialog that prompts the user for the time of day using a TimePicker. |
| UiAutomation | Class for interacting with the device's UI by simulation user actions and introspection of the screen content. |
| UiModeManager | This class provides access to the system uimode services. |
| WallpaperInfo | This class is used to specify meta information of a wallpaper service. |
| WallpaperManager | Provides access to the system wallpaper. |
| Fragment.InstantiationException | Thrown by instantiate(Context, String, Bundle) when
there is an instantiation failure. |
| PendingIntent.CanceledException | Exception thrown when trying to send through a PendingIntent that has been canceled or is otherwise no longer able to execute the request. |