AsyncTask<Params, Progress, Result> |
AsyncTask enables proper and easy use of the UI thread. |
BatteryManager |
The BatteryManager class contains strings and constants used for values
in the ACTION_BATTERY_CHANGED Intent. |
Binder |
Base class for a remotable object, the core part of a lightweight
remote procedure call mechanism defined by IBinder . |
Build |
Information about the current build, extracted from system properties. |
Build.VERSION |
Various version strings. |
Build.VERSION_CODES |
Enumeration of the currently known SDK version codes. |
Bundle |
A mapping from String values to various Parcelable types. |
CancellationSignal |
Provides the ability to cancel an operation in progress. |
ConditionVariable |
Class that implements the condition variable locking paradigm. |
CountDownTimer |
Schedule a countdown until a time in the future, with
regular notifications on intervals along the way. |
Debug |
Provides various debugging functions for Android applications, including
tracing and allocation counts. |
Debug.InstructionCount |
API for gathering and querying instruction counts. |
Debug.MemoryInfo |
This class is used to retrieved various statistics about the memory mappings for this
process. |
DropBoxManager |
Enqueues chunks of data (from various sources -- application crashes, kernel
log records, etc.). |
DropBoxManager.Entry |
A single entry retrieved from the drop box. |
Environment |
Provides access to environment variables. |
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). |
Handler |
A Handler allows you to send and process Message and Runnable
objects associated with a thread's MessageQueue . |
HandlerThread |
Handy class for starting a new thread that has a looper. |
Looper |
Class used to run a message loop for a thread. |
MemoryFile |
MemoryFile is a wrapper for the Linux ashmem driver. |
Message |
Defines a message containing a description and arbitrary data object that can be
sent to a Handler . |
MessageQueue |
Low-level class holding the list of messages to be dispatched by a
Looper . |
Messenger |
Reference to a Handler, which others can use to send messages to it. |
Parcel |
Container for a message (data and object references) that can
be sent through an IBinder. |
ParcelFileDescriptor |
The FileDescriptor returned by readFileDescriptor() , allowing
you to close it when done with it. |
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. |
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. |
ParcelUuid |
This class is a Parcelable wrapper around UUID which is an
immutable representation of a 128-bit universally unique
identifier. |
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. |
PowerManager |
This class gives you control of the power state of the device. |
PowerManager.WakeLock |
A wake lock is a mechanism to indicate that your application needs
to have the device stay on. |
Process |
Tools for managing OS processes. |
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.)
|
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. |
ResultReceiver |
Generic interface for receiving a callback result from someone. |
StatFs |
Retrieve overall information about the space on a filesystem. |
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. |
StrictMode.ThreadPolicy |
StrictMode policy applied to a certain thread. |
StrictMode.ThreadPolicy.Builder |
Creates StrictMode.ThreadPolicy instances. |
StrictMode.VmPolicy |
StrictMode policy applied to all threads in the virtual machine's process. |
StrictMode.VmPolicy.Builder |
Creates StrictMode.VmPolicy instances. |
SystemClock |
Core timekeeping facilities. |
TokenWatcher |
Helper class that helps you use IBinder objects as reference counted
tokens. |
UserHandle |
Representation of a user on the device. |
UserManager |
Manages users and user details on a multi-user system. |
Vibrator |
Class that operates the vibrator on the device. |
WorkSource |
Describes the source of some work that may be done by someone else. |