writeData method
使用设备的write特征值去向设备发送数据
Implementation
void writeData(String serviceUuid, String characteristicUuid,
bool isNoResponse, Uint8List data) {
if (_state != DeviceState.destroyed && _state == DeviceState.connected) {
//已连接才能去向设备写入数据
FlutterBlueElves.instance._channel.invokeMethod('writeData', {
"id": _id,
"serviceUuid": serviceUuid,
"characteristicUuid": characteristicUuid,
"isNoResponse": isNoResponse,
"data": data
}); //去向设备发送数据
}
}