關於EventBus的使用

使用步驟：

①：本身寫個消息類（須要什麼屬性就添加什麼字段）

eg: 

 public class MessageEvent {

    public final String message;

    public MessageEvent(String message) {

        this.message = message;

    }

}

②：在activity中註冊和註銷EventBus

EventBus.getDefault().register(this);

EventBus.getDefault().unregister(this);

③：在須要發送數據即消息的地方調用如下方法，發送你的消息類對象

EventBus.getDefault().post(new MessageEvent("fffffffffff"));

④：在須要接收數據即消息的地方，聲明並實現「訂閱函數」

@Subscribe ------------這個註解是訂閱者的標記，不可省略

/**
     * MainThread: Subscriber will be called in Android's main thread (sometimes
     * referred to as UI thread). If the posting thread is the main thread,
     * event handler methods will be called directly. Event handlers using this
     * mode must return quickly to avoid blocking the main thread.
     *
     * @param messageEvent
     */
    @Subscribe
    public void onEventMainThread(MessageEvent messageEvent) {
        String msg = "onEventMainThread收到了消息：" + messageEvent.message;
        Log.d("harvic", msg);
        Toast.makeText(this, msg, Toast.LENGTH_LONG).show();
    }

    /**
     * BackgroundThread: Subscriber will be called in a background thread. If
     * posting thread is not the main thread, event handler methods will be
     * called directly in the posting thread. If the posting thread is the main
     * thread, EventBus uses a single background thread that will deliver all
     * its events sequentially. Event handlers using this mode should try to
     * return quickly to avoid blocking the background thread
     *
     * @param event
     */
    @Subscribe
    public void onEventBackgroundThread(MessageEvent event) {
        Log.d("harvic", "onEventBackground收到了消息：" + event.message);
    }

    /**
     * Async: Event handler methods are called in a separate thread. This is
     * always independent from the posting thread and the main thread. Posting
     * events never wait for event handler methods using this mode. Event
     * handler methods should use this mode if their execution might take some
     * time, e.g. for network access. Avoid triggering a large number of long
     * running asynchronous handler methods at the same time to limit the number
     * of concurrent threads. EventBus uses a thread pool to efficiently reuse
     * threads from completed asynchronous event handler notifications
     *
     * @param event
     */
    @Subscribe
    public void onEventAsync(MessageEvent event) {
        Log.d("harvic", "onEventAsync收到了消息：" + event.message);
    }

    /**
     * PostThread: Subscriber will be called in the same thread, which is
     * posting the event. This is the default. Event delivery implies the least
     * overhead because it avoids thread switching completely. Thus this is the
     * recommended mode for simple tasks that are known to complete is a very
     * short time without requiring the main thread. Event handlers using this
     * mode should return quickly to avoid blocking the posting thread, which
     * may be the main thread. Example:
     *
     * @param messageEvent
     */
    @Subscribe
    public void onEvent(MessageEvent event) {
        Log.d("harvic", "OnEvent收到了消息：" + event.message);
    }

所需jar包，能夠本身打，這裏我打包了一個，能夠參考

http://pan.baidu.com/s/1c0mF5Tm