三种主要通信方式
- MethodChannel：与原生相互进行方法调用，用于方法调用（双向）
- BasicMessageChannel：与原生相互发送消息，用于数据传输（双向）
- EventChannel：原生发送消息，Flutter接收，用于数据流通信（单向）
具体实现
1. MethodChannel
使用方式以及交互流程，请查看截图中代码以及注释
OC初始化相关代码
@interface ViewController ()<FlutterStreamHandler>
@property(strong, nonatomic) NSTimer *timer;
@property(strong, nonatomic) FlutterEngine *flutterEngine;
@property(strong, nonatomic) FlutterViewController *flutterVC;
@property(strong, nonatomic) FlutterBasicMessageChannel *basicMessageChannel;
@property(strong, nonatomic) FlutterEventChannel *eventChannel;
@property(copy, nonatomic) FlutterEventSink eventSink;
@end
OC懒加载相关代码
- (FlutterEngine *)flutterEngine {
if (!_flutterEngine) {
FlutterEngine *engine = [[FlutterEngine alloc] init];
if (engine.run) {
_flutterEngine = engine;
}
}
return _flutterEngine;
}
- (FlutterViewController *)flutterVC {
if (!_flutterVC) {
_flutterVC = [[FlutterViewController alloc] initWithEngine:self.flutterEngine nibName:nil bundle:nil];
}
return _flutterVC;
}
- (FlutterBasicMessageChannel *)basicMessageChannel {
if (!_basicMessageChannel) {
//注册FlutterBasicMessageChannel - 并指定名称messageChannelName为basicMessageChannel
_basicMessageChannel = [FlutterBasicMessageChannel messageChannelWithName:@"basicMessageChannel" binaryMessenger:self.flutterVC.binaryMessenger];
//监听Flutter发来的消息 - Flutter调用OC回调监听
[_basicMessageChannel setMessageHandler:^(id _Nullable message, FlutterReply _Nonnull callback) {
NSLog(@"OC收到Flutter的FlutterBasicMessageChannel - %@", message);
}];
}
return _basicMessageChannel;
}
- (FlutterEventChannel *)eventChannel {
if (!_eventChannel) {
_eventChannel = [FlutterEventChannel eventChannelWithName:@"eventChannel" binaryMessenger:self.flutterVC.binaryMessenger];
[_eventChannel setStreamHandler:self];
}
return _eventChannel;
}2. BasicMessageChannel
使用方式以及交互流程，请查看截图中代码以及注释
3. EventChannel使用方式以及交互流程，请查看截图中代码以及注释
运行结果
flutter: 消息内容: OC通过EventChannel向Flutter发送消息(OC参数类型是id), Flutter收到消息数据类型: String
完整代码（github中Flt文件夹里面的内容）：
https://github.com/gltwy/public
