在Android中,可以使用BluetoothAdapter类来实现蓝牙传输数据的功能。以下是实现蓝牙传输数据的基本步骤:
BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (bluetoothAdapter == null) {
// 设备不支持蓝牙功能
}
if (!bluetoothAdapter.isEnabled()) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
}
bluetoothAdapter.startDiscovery();
// 在BroadcastReceiver中处理扫描到的设备
private final BroadcastReceiver receiver = 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);
// 连接设备
device.connectGatt(context, false, gattCallback);
}
}
};
// 在BluetoothGattCallback中处理数据传输
private final BluetoothGattCallback gattCallback = new BluetoothGattCallback() {
...
@Override
public void onServicesDiscovered(BluetoothGatt gatt, int status) {
if (status == BluetoothGatt.GATT_SUCCESS) {
BluetoothGattService service = gatt.getService(SERVICE_UUID);
BluetoothGattCharacteristic characteristic = service.getCharacteristic(CHARACTERISTIC_UUID);
// 发送数据
characteristic.setValue(data);
gatt.writeCharacteristic(characteristic);
// 接收数据
gatt.setCharacteristicNotification(characteristic, true);
}
}
...
};
以上是基本的蓝牙传输数据的实现步骤,具体实现还需根据需求进行进一步处理。