Android 建立蓝牙连接

1. 申请蓝牙使用权限

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<uses-permission android:name="android.permission.BLUETOOTH"/>
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>

2. 请求打开蓝牙

   1 2	Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(intent,1);

3. 获取蓝牙适配器

   1	mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();

4. 通过蓝牙设备地址构造 Device

   1	mDevice = mBlueToothAdapter.getRemoteDevice("XX:XX:XX:XX:XX:XX");

5. 创建 RFCOMM socket，连接到对端蓝牙指定服务

   UUID mUUID = UUID.fromString("c7f94713-891e-496a-a0e7-983a0946126e");
   mBluetoothSocket = mDevice.createRfcommSocketToServiceRecord(mUUID);
   mBluetoothSocket.connect();
   

6. 使用 socket 进行数据收发

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   // 获取连接 socket 的输入流 inputStream = mBluetoothSocket.getInputStream(); // 读取数据 inputStream.read(buffer); // 获取连接 socket 的输出流 outputStream = mBluetoothSocket.getOutputStream(); // 写入数据 outputStream.write(buffer);

7. 关闭 socket

   1	mBluetoothSocket.close();