在片段的viewpager中，如何请求将数据从一个片段拉到另一个片段

Question

I have fragments 'A,B,C' inside host Activity 'H'.

I want to click a button in C, which will pull user inputted data from textviews or something in A and B. So that when it is done, I have collected all the data placed in fragments A,B and C.

I imagine this requires some sort of interface but I'm a little confused as to how this might be done.

I see this example shows how to pass data From a fragment to the host, and from the host to a fragment, but I'm not sure how to request info from one fragment to another.

Answer 1

Create callbacks to the host activity in A and B (see http://developer.android.com/guide/components/fragments.html#CommunicatingWithActivity ).

So when the data is input, it will be passed to 'H'.

Then when the button is pressed in fragment C, it can just pull that data from the host activity.

So basically, don't communicate directly between fragments, but rather push and pull your variables from the host activity. (Use the callbacks for 'pushing').

Also, see this link: http://developer.android.com/training/basics/fragments/communicating.html