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demo_0519_eventchannel

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EventChannel

native 调 flutter

swift实现

  1. 初始化FlutterViewController,FlutterEventChannel
  2. 实现FlutterStreamHandler子类,实现onListen(),onCancel()方法
  3. 调用eventChannel.setStreamHandler(XX),XX是第2步创建的子类

Dart代码

  1. 唤醒监听nativeMessageListener(),放在initState()里面,类似于一种声明
  2. 定义监听处理nativeMessageListener()方法,里面调用eventChannel.receiveBroadcastStream().listen(evnet),根据调过来的event(一般是字典,分别以方法名,参数等作为key)做相应处理。

没有flutter 调 native

Libraries

demo_0519_eventchannel