如何将数据从 Activity 传递到 BottomSheet Fragment？

Question

I am confused about the use of fragment in BottomSheet. I used this tutorial: https://blog.mindorks.com/android-bottomsheet-in-kotlin

This thing itself basically works - BottomSheet shows up and hides whenever I want, but I want to pass some data there dynamically , according to the item that I click on from the list.

This is how it works in code according to the tutorial:

// Fragment creation
var bottomSheetFragment : Fragment? = null
bottomSheetFragment = supportFragmentManager.findFragmentById(R.id.filter_fragment)

// Behavior configuration
private var mBottomSheetBehavior: BottomSheetBehavior<View?>? = null
bottomSheetFragment?.let {
        BottomSheetBehavior.from(it.view)?.let { bsb ->
            bsb.state = BottomSheetBehavior.STATE_HIDDEN
            mBottomSheetBehavior = bsb
        }
    }
}

// How we show and hide it
fun show(){
   mBottomSheetBehavior?.state = BottomSheetBehavior.STATE_EXPANDED
}

fun hide(){
   mBottomSheetBehavior?.state = BottomSheetBehavior.STATE_COLLAPSED
}

So, there it works and there's no fragment object where I can use NewInstance to pass the data as I usually do. How can I do it in this case?

Thanks!

Answer 1

you can use bundle to pass data from activity to fragment like this

Bundle bundle = new Bundle();
String myMessage = "Stack Overflow is cool!";
bundle.putString("message", myMessage );
FragmentClass fragInfo = new FragmentClass();
fragInfo.setArguments(bundle);

in the fragment you can access this bundle

 @Override
 public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle 
 savedInstanceState) {
  String myValue = this.getArguments().getString("message");
   ...
  }

Answer 2

You can add BottomSheetFragment in your nav_graph and pass data as an argument of action .

findNavController().navigate(
   MyFragmentDirections.actionMyFragmentToBottomSheetDialog(myData)
)

And finally, get the result as mentioned in the document .