在Android中,可以使用BluetoothGattServer类来实现GATT服务器功能。但是,如果你想在没有专用GATT服务器的情况下使用BLE,可以通过以下步骤实现:
BluetoothManager bluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
BluetoothAdapter bluetoothAdapter = bluetoothManager.getAdapter();
if (!bluetoothAdapter.isMultipleAdvertisementSupported()) {
// 如果不支持BLE,显示错误信息或采取其他适当的措施
}
if (!bluetoothAdapter.isEnabled()) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
}
if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE)) {
// 如果不支持BLE,显示错误信息或采取其他适当的措施
}
BluetoothLeScanner scanner = bluetoothAdapter.getBluetoothLeScanner();
ScanCallback scanCallback = new ScanCallback() {
@Override
public void onScanResult(int callbackType, ScanResult result) {
// 处理扫描结果
}
};
ScanFilter scanFilter = new ScanFilter.Builder().setDeviceAddress(deviceAddress).build();
List scanFilters = new ArrayList<>();
scanFilters.add(scanFilter);
ScanSettings scanSettings = new ScanSettings.Builder().setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY).build();
scanner.startScan(scanFilters, scanSettings, scanCallback);
// 当连接到设备时停止扫描
scanner.stopScan(scanCallback);
BluetoothGattCallback gattCallback = new BluetoothGattCallback() {
@Override
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
// 处理连接状态变化
}
@Override
public void onServicesDiscovered(BluetoothGatt gatt, int status) {
// 处理服务发现
}
@Override
public void onCharacteristicRead(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic, int status) {
// 处理特征读取
}
@Override
public void onCharacteristicWrite(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic, int status) {
// 处理特征写入
}
@Override
public void onCharacteristicChanged(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic) {
// 处理特征变化
}
};
BluetoothDevice device = bluetoothAdapter.getRemoteDevice(deviceAddress);
BluetoothGatt gatt = device.connectGatt(this, false, gattCallback);
这是一个简单的使用BLE的示例。你可以根据你的需求来扩展和修改这些代码。请注意,使用BLE需要权限和正确的设备支持。