我在ViewPager.Scroll_State_Dragging
中调用EventBus
,并将其与片段中的subscribe方法一起使用,但我删除了synthetic,它仍然给出kotlin null指针错误。
错误消息:
Caused by: java.lang.NullPointerException: at com.myproject.ui.fragment.MyFragment.onMyEvent (MyFragment.java:93)
MyFragment.java:93 -> binding.textView.text = "worked"
来源代码:
class MyEvent
EventBus.getDefault().post(MyEvent())
@Subscribe
fun onMyEvent(e: MyEvent?) {
binding.textView.text = "worked"
}
EventBus.getDefault((.register(此处为"活动名称"(