android蓝牙连接三部曲

// 连接蓝牙的线程
private class AcceptThread extends Thread {
	private final BluetoothServerSocket mmServerSocket;

	public AcceptThread() {
		BluetoothServerSocket tmp = null;
		try {
			tmp = BlueToothService.this.adapter.listenUsingRfcommWithServiceRecord("BTPrinter",
					BlueToothService.MY_UUID);
		} catch (IOException e) {
			Log.e(BlueToothService.this.TAG, "listen() failed", e);
		}
		this.mmServerSocket = tmp;
	}

	public void run() {
		if (BlueToothService.this.D.booleanValue())
			Log.d(BlueToothService.this.TAG, "BEGIN mAcceptThread" + this);
		setName("AcceptThread");
		BluetoothSocket socket = null;

		while (BlueToothService.this.mState != 3) {
			try {
				socket = this.mmServerSocket.accept();
			} catch (IOException e) {
				break;
			}

			if (socket != null)
				synchronized (BlueToothService.this) {
					switch (BlueToothService.this.mState) {
					case 1:
					case 2:
						BlueToothService.this.connected(socket, socket.getRemoteDevice());
						break;
					case 0:
					case 3:
						try {
							socket.close();
						} catch (IOException localIOException1) {
						}
					}
				}
		}
	}

	public void cancel() {
		if (BlueToothService.this.D.booleanValue())
			Log.d(BlueToothService.this.TAG, "cancel " + this);
		try {
			this.mmServerSocket.close();
		} catch (IOException e) {
			Log.e(BlueToothService.this.TAG, "close() of server failed", e);
		}
	}
}

// 连接中的线程
private class ConnectThread extends Thread {
	private final BluetoothSocket mmSocket;
	private final BluetoothDevice mmDevice;

	public ConnectThread(BluetoothDevice device) {
		this.mmDevice = device;
		BluetoothSocket tmp = null;
		try {
			tmp = device.createRfcommSocketToServiceRecord(BlueToothService.MY_UUID);
		} catch (IOException e) {
			Log.e(BlueToothService.this.TAG, "create() failed", e);
		}
		this.mmSocket = tmp;
	}

	public void run() {
		Log.i(BlueToothService.this.TAG, "BEGIN mConnectThread");
		setName("ConnectThread");

		BlueToothService.this.adapter.cancelDiscovery();
		BlueToothService.this.SetScanState(1);
		try {
			this.mmSocket.connect();
			BlueToothService.this.connectionSuccess();
		} catch (IOException e) {
			BlueToothService.this.connectionFailed();
			try {
				this.mmSocket.close();
			} catch (IOException e2) {
				Log.e(BlueToothService.this.TAG, "unable to close() socket during connection failure", e2);
			}

			BlueToothService.this.start();
			return;
		}

		synchronized (BlueToothService.this) {
			BlueToothService.this.mConnectThread = null;
		}

		BlueToothService.this.connected(this.mmSocket, this.mmDevice);
	}

	public void cancel() {
		try {
			this.mmSocket.close();
		} catch (IOException e) {
			Log.e(BlueToothService.this.TAG, "close() of connect socket failed", e);
		}
	}
}

// 连接之后的线程
private class ConnectedThread extends Thread {
	private final BluetoothSocket mmSocket;
	private final InputStream mmInStream;
	private final OutputStream mmOutStream;
	private boolean isCancle = false;

	public ConnectedThread(BluetoothSocket socket) {
		Log.d(BlueToothService.this.TAG, "create ConnectedThread");
		this.mmSocket = socket;
		InputStream tmpIn = null;
		OutputStream tmpOut = null;
		this.isCancle = false;
		try {
			tmpIn = socket.getInputStream();
			tmpOut = socket.getOutputStream();
		} catch (IOException e) {
			Log.e(BlueToothService.this.TAG, "temp sockets not created", e);
		}
		this.mmInStream = tmpIn;
		this.mmOutStream = tmpOut;
	}

	public void run() {
		Log.i(BlueToothService.this.TAG, "BEGIN mConnectedThread");
		while (!this.isCancle)
			try {
				byte[] buffer = new byte[1];

				int bytes = this.mmInStream.read(buffer);
				if (bytes > 0) {
					BlueToothService.this.SetPrinterType(2);

					if (buffer[0] != 17) {
						BlueToothService.this.SetWriteState(3);
					} else {
						BlueToothService.this.SetWriteState(2);
					}

				} else {
					Log.e(BlueToothService.this.TAG, "disconnected1");
					BlueToothService.this.connectionLost();
					this.isCancle = true;
				}

			} catch (IOException e) {
				Log.e(BlueToothService.this.TAG, "disconnected2", e);
				BlueToothService.this.connectionLost();
				this.isCancle = true;
			}
	}

	public void write(byte[] buffer) {
		try {
			this.mmOutStream.write(buffer);
			Log.i("BTPWRITE", new String(buffer, "GBK"));

			BlueToothService.this.mHandler.obtainMessage(3, -1, -1, buffer).sendToTarget();
		} catch (IOException localIOException) {
		}
	}

	public void cancel() {
		try {
			this.isCancle = true;
			this.mmSocket.close();
			Log.d(BlueToothService.this.TAG, "562cancel suc");
			BlueToothService.this.setState(1);
		} catch (IOException e) {
			Log.d(BlueToothService.this.TAG, "565cancel failed");
		}
	}
}

评论

1 楼 518七哥 2014-11-14  

我想问下，我的代码跟你的一样，安卓手机蓝牙能连接成功蓝牙打印机，但是打印好像没反应啊，是什么原因呢，求大神指导，我的QQ1024473555，希望大神有时间指导一下，我用的打印机是LW-600P，是爱普生的一款便携蓝牙打印机，我不知道这些代码能不能通用，应该要注意什么