在Android Studio中,处理蓝牙连接问题可以按照以下步骤进行:
private BluetoothAdapter bluetoothAdapter;
private BluetoothDevice bluetoothDevice;
private BluetoothSocket bluetoothSocket;
private UUID uuid = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"); // 默认的UUID,用于与蓝牙设备进行通信
private static final int REQUEST_ENABLE_BT = 1; // 请求用户打开蓝牙的请求码
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (bluetoothAdapter == null) {
// 设备不支持蓝牙
return;
}
if (!bluetoothAdapter.isEnabled()) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_ENABLE_BT) {
if (resultCode == RESULT_OK) {
// 用户已打开蓝牙
} else if (resultCode == RESULT_CANCELED) {
// 用户未打开蓝牙
}
}
}
private void scanAndConnectBluetooth() {
if (bluetoothAdapter.isDiscovering()) {
bluetoothAdapter.cancelDiscovery();
}
// 开始扫描蓝牙设备
bluetoothAdapter.startDiscovery();
}
// 在BroadcastReceiver中处理扫描到的蓝牙设备
private final BroadcastReceiver bluetoothReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
if (device.getName().equals("Your Bluetooth Device Name")) {
bluetoothDevice = device;
// 连接蓝牙设备
new ConnectBluetoothTask().execute();
}
}
}
};
// 异步任务用于连接蓝牙设备
private class ConnectBluetoothTask extends AsyncTask {
protected Void doInBackground(Void... params) {
try {
bluetoothSocket = bluetoothDevice.createRfcommSocketToServiceRecord(uuid);
bluetoothSocket.connect();
} catch (IOException e) {
// 处理连接错误
}
return null;
}
protected void onPostExecute(Void result) {
if (bluetoothSocket.isConnected()) {
// 连接成功
} else {
// 连接失败
}
}
}
这是一个简单的使用蓝牙连接的示例,你可以根据你的具体需求进行修改和扩展。