I want to send data from fragment to fragment

Question

I want to send data from fragment to fragment using arguments the way I am doing is mentioned below.

here's on button click data sent to fragment using argument

//sender fragment 
view.btnjavafragment.setOnClickListener {
            newInstance("helllo")
        }

  companion object {
        @JvmStatic
        fun newInstance(mystring:String) = javaFragment().apply {
            arguments = Bundle().apply {
              putString("sentdata",mystring)
              if(arguments!=null){
                  Toast.makeText(context,"data sent",Toast.LENGTH_SHORT).show()
              }
            }
        }
    }

//receiving fragment 
override fun onAttach(context: Context?) {
        super.onAttach(context)
        arguments?.getString("sentdata","")?.let {
            string = it
            tvdatamessage.setText(string)
        }
    }

Answer 1

Hi Please follow below link for your solutions.

https://www.journaldev.com/14207/android-passing-data-between-fragments

You can also use Navigation Graph for Fragment Transaction and directly send any kind of data in bundle to send it like below.

var nameBundle = Bundle()
nameBundle.putString("youKey", edtName.text.toString())
it.findNavController().navigate(R.id.tofragmentName, nameBundle)

Answer 2

It is not recommended that two Fragments should communicate directly. Check out the documentation and examples here. https://developer.android.com/training/basics/fragments/communicating

I would recommend a common ViewModel and observe the changes there.

Answer 3

You can use SafeArgs that are part of Navigation component on Jetpack. Here you have nice tutorial made by Google.