如何从 Activity 中的 Fragment 调用方法？

Question

I have a class MainActivity with three fragments.

Fragment Two uses a WebView. I want to create a method Webview.reaload() in Fragment Two and call this method from MainActivity. How can I do that?

Answer 1

With getActivity() you will get the activity instance, cast it to your activity name and call function from fragments. Assuming activity name as MainActivity

((MainActivity)getActivity()).myFuncInActivity():

Answer 2

Interfaces work well will this kind of communication.

Check out this guide: https://developer.android.com/guide/components/fragments.html#CommunicatingWithActivity