useEmitter function
Emitter 钩子
Implementation
EventEmitter? useEmitter(String key) {
if (_emitterMap.containsKey(key) == false) {
_emitterMap[key] = EventEmitter();
}
return _emitterMap[key];
}
Emitter 钩子
EventEmitter? useEmitter(String key) {
if (_emitterMap.containsKey(key) == false) {
_emitterMap[key] = EventEmitter();
}
return _emitterMap[key];
}