package
android.os
Classes |
Description
Provides basic operating system services, message passing, and inter-process communication on the device. more...
Interfaces
| IBinder | 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. |
| IBinder.DeathRecipient | Interface for receiving a callback when the process hosting an IBinder has gone away. |
| IInterface | Base class for Binder interfaces. |
| IUsb | |
| MessageQueue.IdleHandler | Callback interface for discovering when a thread is going to block waiting for more messages. |
| Parcelable | Interface for classes whose instances can be written to and restored from a Parcel. |
| Parcelable.Creator |
Classes
| Base64Utils | |
| 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. |
| Bundle | A mapping from String values to various Parcelable types. |
| ConditionVariable | Class that implements the condition variable locking paradigm. |
| Debug | Provides various debugging functions for Android applications, including tracing and allocation counts. |
| Debug.InstructionCount | API for gathering and querying instruction counts. |
| Environment | Provides access to environment variables. |
| FileObserver | |
| Handler | A Handler allows you to send and process Message and Runnable objects associated with a thread's MessageQueue. |
| IUsb.Stub | Local-side IPC implementation stub class. |
| Looper | Class used to run a message loop for a thread. |
| Message | Defines a Message that can be placed in a MessageQueue for scheduled execution of a Runnable object. |
| MessageQueue | Low-level class holding the list of messages to be dispatched by a Looper. |
| 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 ParcelFileDescritor.close() for you when the stream is closed. |
| ParcelFileDescriptor.AutoCloseOutputStream | An OutputStream you can create on a ParcelFileDescriptor, which will take care of calling ParcelFileDescritor.close() for you when the stream is closed. |
| PowerManager | Class that lets you control the power state of the device. |
| PowerManager.WakeLock | Class lets you say that you need to have the device on. |
| Process | Tools for managing OS processes. |
| RemoteCallbackList | 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. |
| SystemClock | Core timekeeping facilities. |
| SystemProperties | Gives access to the system properties store. |
| TokenWatcher | Helper class that helps you use IBinder objects as reference counted tokens. |
| Vibrator | Class that operates the vibrator on the device. |
Exceptions
| BadParcelableException | The object you are calling has died, because its hosting process no longer exists. |
| DeadObjectException | The object you are calling has died, because its hosting process no longer exists. |
| ParcelFormatException | The contents of a Parcel (usually during unmarshalling) does not contain the expected data. |