| 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. |
| 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 | Class lets you say that you need to have the device 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 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. |
| Vibrator | Class that operates the vibrator on the device. |
| WorkSource | Describes the source of some work that may be done by someone else. |