dependencies {

  //最新版本
  compile 'org.greenrobot:eventbus:3.0.0' 

  //可以翻倍提高EventBus使用效率
  provided 'de.greenrobot:eventbus-annotation-processor:3.0.0-beta1'

}

/**
 * Activity基類
 */
protected EventBus eb;

 @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    //單例模式獲取到實例并注冊
    eb = EventBus.getDefault();
    eb.register(this);

  }


 @Override
  protected void onDestroy() {
    //反注冊
    eb.unregister(this);
    super.onDestroy();
  }


 //主線程
 @Subscribe(threadMode = ThreadMode.MAIN)
 public void onMainEvent(EventBean event) {
 }

 //主線程 粘性(比如傳遞intent使用)
 @Subscribe(sticky = true, threadMode = ThreadMode.MAIN)
 public void onMainStickEvent(EventBean event) {
 }

 //后臺
 @Subscribe(threadMode = ThreadMode.BACKGROUND)
 public void onBackgroundEvent(EventBean event) {
 }

 //重新開啟一個線程來執(zhí)行
 @Subscribe(threadMode = ThreadMode.ASYNC)
 public void onAsyncEvent(EventBean event) {
 }

//根據(jù)不同需求自定義
/**
 * 自定義Event消息
 */
public class EventBean {

  public int id;//類型標(biāo)識

  public Object data;//數(shù)據(jù)對象

  //省略constructor & getter & setter
}

繼承自基類Activity后：

eb.post(new EventBean(1, "data"));

//粘性
eb.postSticky(new EventBean(1, "data"));