您可以像这样从片段中访问这些实例:

You can access these instances from your fragment like this:

字符串cityFieldFragment =(活动为YourActivity).cityField;

字符串updatedFieldFragment =(活动为YourActivity).updatedField;

如果我理解这一权利，则该片段存在于您的活动中，因此您可以从中访问数据，只需确保实例是公共的即可.

If I understood this right, the fragment lives in your activity, so you are able to access the data from it, just make sure that the instances are public.