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Frequently called with: [Clear]
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| java.lang.Object | |
| ↳ | android.bluetooth.BluetoothSocket |
A connected or connecting Bluetooth socket.
The interface for Bluetooth Sockets is similar to that of TCP sockets: Socket and ServerSocket. On the server side, use a BluetoothServerSocket to create a listening server socket. When a connection is accepted by the BluetoothServerSocket, it will return a new BluetoothSocket to manage the connection. On the client side, use a single BluetoothSocket to both initiate an outgoing connection and to manage the connection.
The most common type of Bluetooth socket is RFCOMM, which is the type supported by the Android APIs. RFCOMM is a connection-oriented, streaming transport over Bluetooth. It is also known as the Serial Port Profile (SPP).
To create a BluetoothSocket for connecting to a known device, use BluetoothDevice.createRfcommSocketToServiceRecord(). Then call connect() to attempt a connection to the remote device. This call will block until a connection is established or the connection fails.
To create a BluetoothSocket as a server (or "host"), see the BluetoothServerSocket documentation.
Once the socket is connected, whether initiated as a client or accepted as a server, open the IO streams by calling getInputStream() and getOutputStream() in order to retrieve InputStream and OutputStream objects, respectively, which are automatically connected to the socket.
BluetoothSocket is thread safe. In particular, close() will always immediately abort ongoing operations and close the socket.
Note: Requires the BLUETOOTH permission.
For more information about using Bluetooth, read the Bluetooth developer guide.
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Closes the object and release any system resources it holds.
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Attempt to connect to a remote device.
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Get the input stream associated with this socket.
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Get the output stream associated with this socket.
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Get the remote device this socket is connecting, or connected, to.
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Get the connection status of this socket, ie, whether there is an active connection with remote device.
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Inherited Methods
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 From class java.lang.Object
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| From interface java.io.Closeable
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Closes the object and release any system resources it holds.
Although only the first call has any effect, it is safe to call close multiple times on the same object. This is more lenient than the overridden AutoCloseable.close(), which may be called at most once.
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Attempt to connect to a remote device.
This method will block until a connection is made or the connection fails. If this method returns without an exception then this socket is now connected.
Creating new connections to remote Bluetooth devices should not be attempted while device discovery is in progress. Device discovery is a heavyweight procedure on the Bluetooth adapter and will significantly slow a device connection. Use cancelDiscovery() to cancel an ongoing discovery. Discovery is not managed by the Activity, but is run as a system service, so an application should always call cancelDiscovery() even if it did not directly request a discovery, just to be sure.
close() can be used to abort this call from another thread.
| IOException | on error, for example connection failure |
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Get the input stream associated with this socket.
The input stream will be returned even if the socket is not yet connected, but operations on that stream will throw IOException until the associated socket is connected.
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Get the output stream associated with this socket.
The output stream will be returned even if the socket is not yet connected, but operations on that stream will throw IOException until the associated socket is connected.
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Get the remote device this socket is connecting, or connected, to.
Get the connection status of this socket, ie, whether there is an active connection with remote device.