如何从片段更改主要活动的数据 [英] How to change data of Main Activity from Fragment

问题描述

我在主要活动中有片段1，片段2，片段3.主活动中有一个TextView，这些片段如何更改文本视图中的文本?

I Have fragment 1, fragment 2, fragment 3 which are in the Main Activity. there is a TextView in the main Activity, how can the fragments change the text in the text view?

我已经进行了强制转换(Actvity).getActivity，但是我不希望我的应用在更改活动"时出现错误

I already did the casting (Actvity).getActivity but i don't want my app to have error when changing Activities

推荐答案

在活动中编写诸如 setTextViewText(String str)之类的setter方法，并从片段中调用诸如((YourActivity)getActivity()).setTexrViewText(str)

Write a setter method like setTextViewText(String str) in the activity and from fragment call the method like ((YourActivity)getActivity()).setTexrViewText(str)

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