sendEvent method
调用原生方法 发送消息 Call native methods to send messages
Implementation
Future<bool> sendEvent(dynamic arguments) async {
assert(_channel != null, 'You must call setMethodChannel() first');
if (!_supportPlatform ||
_eventChannel == null ||
_streamSubscription == null ||
_channel == null ||
_streamSubscription!.isPaused) return false;
final bool? state =
await _channel!.invokeMethod<bool?>('sendEvent', arguments);
return state ?? false;
}