flutter pub add eventify根據套件公開資料產生的選型評估，僅供參考。
Eventify 是一個可取消的事件發射器，專為 Dart 中的上下文感知、事件驅動程式設計而設計。它透過內建的取消支援，允許事件的發出與監聽，實現元件間的高效通訊，確保不會產生記憶體洩漏。非常適合用於管理應用不同部分的狀態變更、使用者互動或非同步工作流程。該套件支援所有主要平台，包括 Android、iOS、Web、macOS、Windows 和 Linux，使其在跨平台開發中極具彈性。
以下為關聯原始碼儲存庫的 README 原文快照，最新內容請造訪原始碼儲存庫。
EventEmitter for dart. This can be used in any application to register for events and get notified once it is fired.
This library provide mechanism to register for event notifications with emitter or publisher and get notified in the event of an event.
One main advantage of the mehanism is that, it support context from where the subscriber is listening. The context could be any additional data the subscriber is interested in.
Another feature this has is the ability to receive sender information, which could be handy if the subscriber wish to know about the publisher.
void performAddition(){
}
EventCallback cb = (ev, cont) {
if (null != ev) {
switch (ev.eventName) {
case "add":
performAddition();
break;
}
}
};
EventEmitter emitter = new EventEmitter();
Listener listener = emitter.on("add", this , cb);
emitter.emit("add","keyboard",10);
As shown in the above example, it is easy to register for events and get notified once it is triggered.