EventBus的基础用法

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第一个

public class MessageEvent {
   public static String DELETE_ITEM = "delete_item";
   public static String UPDATE_ITEM = "update_item";
   public static String DELETE_ALL = "delete_all";
   public static String POST_URL = "https://ust-lx1.ustrading.com/scan/resultData";
   
   public class
   POST_SUCCESS {}
}

DeleteItemBean updateItemBean = new DeleteItemBean(MessageEvent.UPDATE_ITEM);
updateItemBean.setItemNo(itemNo);
EventBus
   .getDefault()
   .post(updateItemBean);

定义一个类，给他一个属性，到时候根据属性来判断是哪个发的

以上是类的截图

接下来在你用到的EventBus地方（activity or fragment里面）进行

操作

@Subscribe(threadMode = ThreadMode.MAIN)
public void onDeleteItem(DeleteItemBean bean) {
   String busTo = bean.getBusTo();
   if (MessageEvent.DELETE_ITEM.equals(busTo)) {
      //单独删除一个
      String itemNo = bean.getItemNo();
      if (mSearchFragmentAdapter != null) {
         mSearchFragmentAdapter.deleteOneItem(itemNo);
         if (mSearchFragmentAdapter.getItemCount() == 0) {
            showEmpty(true);
         }
      }
      
   } else if (MessageEvent.UPDATE_ITEM.equals(busTo)) {
      String itemNo = bean.getItemNo();
      if (mSearchFragmentAdapter != null) {
         PItemList first = PItemList
                          .where("no =?", itemNo)
                          .findFirst(PItemList.class);
         if (first != null) {
            mSearchFragmentAdapter.replaceData(first);
         }
      }
   } else {
      //删除全部
      if (mSearchFragmentAdapter != null) {
         mSearchFragmentAdapter.deleteAll();
         showEmpty(true);
      }
   }
}

进行区分判断就好了