在Android导航体系结构中，如何从主机调用目标片段的方法之一（活动）

Question

I use Navigation Architecture in my project and I have some fragments as destinations. Its host is my MainActivity. Now I want to call one of my destinations' methods from the host (MainActivity). What should I do?

Answer 1

You need to get the navController and then call the destination fragment by action I'd or destination I'd as defined in your navigationgraph.xml

Refer Android doc for navigating to destination section: https://developer.android.com/guide/navigation/navigation-getting-started#java

//Sample code

Navigation.findNavController(view).navigate(R.id.viewTransactionsAction);