Android / Fragment-如何传递Last Fragment的参数并发送给Previous Fragment？

Question

• I have the following situation: I open the Fragment A and goals, through a click event of the button, go to the Fragment B. When I am in Fragment B and hit the back button (in order to return to the Fragment A) I would like to pass some parameters to Fragment A. Does anyone know how I can do this?
• Thank you in advance to all.

Answer 1

您的活动可以在“活动”上实现自定义侦听器接口，并在片段中使用对该接口的引用来将通信传递回去。

Answer 2

You can send a broadcast when you hit the back button in Fragment B to Fragment A with the parameters you need put in the bundle, and have broadcast receiver on the Fragment A.

Hope this helps!