android.os

Listens for cancellation.

Listener that is called periodically as progress is made.

Callback interface you can use when instantiating a Handler to avoid having to implement your own subclass of Handler.

Base interface for a remotable object, the core part of a lightweight remote procedure call mechanism designed for high performance when performing in-process and cross-process calls.

Base class for Binder interfaces.

Callback interface for discovering when a thread is going to block waiting for more messages.

A listener which is invoked when file descriptor related events occur.

Callback interface intended for use when an asynchronous operation may result in a failure.

Interface for classes whose instances can be written to and restored from a Parcel.

Callback indicating that a ParcelFileDescriptor has been closed.

Listener passed to android.

A listener interface to get notified when the wakelock is enabled/disabled.

Interface definition for a callback to be invoked regularly as verification proceeds.

When #ThreadPolicy.Builder#penaltyListener is enabled, the listener is called on the provided executor when a Thread violation occurs.

When #VmPolicy.Builder#penaltyListener is enabled, the listener is called on the provided executor when a VM violation occurs.

AsyncTask was intended to enable proper and easy use of the UI thread.

A mapping from String keys to values of various types.

The BatteryManager class contains strings and constants used for values in the android.content.Intent#ACTION_BATTERY_CHANGED Intent, and provides a method for querying battery and charging properties.

Base class for a remotable object, the core part of a lightweight remote procedure call mechanism defined by IBinder.

Class that provides a privileged API to capture and consume bugreports.

Information about the current build, extracted from system properties.

A mapping from String keys to various Parcelable values.

Provides the ability to cancel an operation in progress.

A CombinedVibration describes a combination of haptic effects to be performed by one or more Vibrators.

Class that implements the condition variable locking paradigm.

Schedule a countdown until a time in the future, with regular notifications on intervals along the way.

CPU usage information per core.

Provides various debugging methods for Android applications, including tracing and allocation counts.

Enqueues chunks of data (from various sources -- application crashes, kernel log records, etc.).

Provides access to environment variables.

Monitors files (using inotify) to fire an event after files are accessed or changed by any process on the device (including this one).

Utility methods useful for working with files.

A Handler allows you to send and process Message and Runnable objects associated with a thread's MessageQueue.

A Thread that has a Looper.

The HardwarePropertiesManager class provides a mechanism of accessing hardware state of a device: CPU, GPU and battery temperatures, CPU usage per core, fan speed, etc.

LocaleList is an immutable list of Locales, typically used to keep an ordered list of user preferences for locales.

Class used to run a message loop for a thread.

MemoryFile is a wrapper for SharedMemory which can optionally be set to purgeable.

Defines a message containing a description and arbitrary data object that can be sent to a Handler.

Low-level class holding the list of messages to be dispatched by a Looper.

Reference to a Handler, which others can use to send messages to it.

Container for a message (data and object references) that can be sent through an IBinder.

The FileDescriptor returned by Parcel.readFileDescriptor, allowing you to close it when done with it.

This class is a Parcelable wrapper around UUID which is an immutable representation of a 128-bit universally unique identifier.

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.

The PerformanceHintManager allows apps to send performance hint to system.

A mapping from String keys to values of various types.

This class lets you query and request control of aspects of the device's power state.

A PowerMonitor represents either an ODPM rail (on-device power rail monitor) or a modeled energy consumer.

A collection of energy measurements from Power Monitors.

Tools for managing OS processes.

This class allows the caller to request profiling and listen for results.

Encapsulates results of a single profiling request operation.

Callback that handles file system requests from ProxyFileDescriptor.

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.)

Takes care of the grunt work of maintaining a list of remote interfaces, typically for the use of performing callbacks from a android.app.Service to its clients.

Generic interface for receiving a callback result from someone.

SecurityStateManager provides the functionality to query the security status of the system and platform components.

SharedMemory enables the creation, mapping, and protection control over anonymous shared memory.

Retrieve overall information about the space on a filesystem.

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.

Core timekeeping facilities.

Blocks a looper from executing any messages, and allows the holder of this object to control when and which messages get executed until it is released.

A TokenWatcher watches a collection of IBinders.

Writes trace events to the system trace buffer.

Representation of a user on the device.

Manages users and user details on a multi-user system.

Encapsulates a collection of attributes describing information about a vibration.

A VibrationEffect describes a haptic effect to be performed by a Vibrator.

Class that operates the vibrator on the device.

Provides access to all vibrators from the device, as well as the ability to run them in a synchronized fashion.

WorkDuration contains the measured time in nano seconds of the workload in each component, see PerformanceHintManager.Session#reportActualWorkDuration(WorkDuration).

Describes the source of some work that may be done by someone else.

Exception thrown when a Parcelable is malformed or otherwise invalid.

The object you are calling has died, because its hosting process no longer exists, or there has been a low-level binder error.

The core Android system has died and is going through a runtime restart.

The exception that is thrown when an application exposes a file:// android.net.Uri to another app.

Indicates that the app has exceeded a limit set by the System.

The exception that is thrown when an application attempts to perform a networking operation on its main thread.

An exception type that is thrown when an operation in progress is canceled.

The contents of a Parcel (usually during unmarshalling) does not contain the expected data.

Parent exception for all Binder remote-invocation errors Note: not all exceptions from binder services will be subclasses of this.

The Binder transaction failed because it was too large.