AsyncTask<Params, Progress, Result> |
AsyncTask enables proper and easy use of the UI thread.
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BaseBundle |
A mapping from String values to various types.
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BatteryManager |
The BatteryManager class contains strings and constants used for values
in the ACTION_BATTERY_CHANGED Intent, and
provides a method for querying battery and charging properties.
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Binder |
Base class for a remotable object, the core part of a lightweight
remote procedure call mechanism defined by IBinder .
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Build |
Information about the current build, extracted from system properties.
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Build.VERSION |
Various version strings.
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Build.VERSION_CODES |
Enumeration of the currently known SDK version codes.
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Bundle |
A mapping from String values to various Parcelable types.
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CancellationSignal |
Provides the ability to cancel an operation in progress.
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ConditionVariable |
Class that implements the condition variable locking paradigm.
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CountDownTimer |
Schedule a countdown until a time in the future, with
regular notifications on intervals along the way.
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Debug |
Provides various debugging methods for Android applications, including
tracing and allocation counts.
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Debug.InstructionCount |
API for gathering and querying instruction counts.
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Debug.MemoryInfo |
This class is used to retrieved various statistics about the memory mappings for this
process.
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DropBoxManager |
Enqueues chunks of data (from various sources -- application crashes, kernel
log records, etc.).
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DropBoxManager.Entry |
A single entry retrieved from the drop box.
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Environment |
Provides access to environment variables.
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FileObserver |
Monitors files (using inotify)
to fire an event after files are accessed or changed by by any process on
the device (including this one).
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Handler |
A Handler allows you to send and process Message and Runnable
objects associated with a thread's MessageQueue .
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HandlerThread |
Handy class for starting a new thread that has a looper.
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Looper |
Class used to run a message loop for a thread.
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MemoryFile |
MemoryFile is a wrapper for the Linux ashmem driver.
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Message |
Defines a message containing a description and arbitrary data object that can be
sent to a Handler .
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MessageQueue |
Low-level class holding the list of messages to be dispatched by a
Looper .
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Messenger |
Reference to a Handler, which others can use to send messages to it.
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Parcel |
Container for a message (data and object references) that can
be sent through an IBinder.
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ParcelFileDescriptor |
The FileDescriptor returned by readFileDescriptor() , allowing
you to close it when done with it.
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ParcelFileDescriptor.AutoCloseInputStream |
An InputStream you can create on a ParcelFileDescriptor, which will
take care of calling ParcelFileDescriptor.close() for you when the stream is closed.
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ParcelFileDescriptor.AutoCloseOutputStream |
An OutputStream you can create on a ParcelFileDescriptor, which will
take care of calling ParcelFileDescriptor.close() for you when the stream is closed.
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ParcelUuid |
This class is a Parcelable wrapper around UUID which is an
immutable representation of a 128-bit universally unique
identifier.
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PatternMatcher |
A simple pattern matcher, which is safe to use on untrusted data: it does
not provide full reg-exp support, only simple globbing that can not be
used maliciously.
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PersistableBundle |
A mapping from String values to various types that can be saved to persistent and later
restored.
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PowerManager |
This class gives you control of the power state of the device.
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PowerManager.WakeLock |
A wake lock is a mechanism to indicate that your application needs
to have the device stay on.
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Process |
Tools for managing OS processes.
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RecoverySystem |
RecoverySystem contains methods for interacting with the Android
recovery system (the separate partition that can be used to install
system updates, wipe user data, etc.)
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RemoteCallbackList<E extends IInterface> |
Takes care of the grunt work of maintaining a list of remote interfaces,
typically for the use of performing callbacks from a
Service to its clients.
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ResultReceiver |
Generic interface for receiving a callback result from someone.
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StatFs |
Retrieve overall information about the space on a filesystem.
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StrictMode |
StrictMode is a developer tool which detects things you might be
doing by accident and brings them to your attention so you can fix
them.
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StrictMode.ThreadPolicy |
StrictMode policy applied to a certain thread.
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StrictMode.ThreadPolicy.Builder |
Creates StrictMode.ThreadPolicy instances.
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StrictMode.VmPolicy |
StrictMode policy applied to all threads in the virtual machine's process.
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StrictMode.VmPolicy.Builder |
Creates StrictMode.VmPolicy instances.
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SystemClock |
Core timekeeping facilities.
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TokenWatcher |
Helper class that helps you use IBinder objects as reference counted
tokens.
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Trace |
Writes trace events to the system trace buffer.
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UserHandle |
Representation of a user on the device.
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UserManager |
Manages users and user details on a multi-user system.
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Vibrator |
Class that operates the vibrator on the device.
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WorkSource |
Describes the source of some work that may be done by someone else.
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