Passing a value from a dropdown list in a fragment to another activity (Kotlin)

user_17571806 0
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I am making an app (ehealth portal) in Android Studio using Kotlin language and in that app, the user should be able to book an appointment choosing date/time/doctor's name from a dropdown list, and once they push the "book a date" button a confirmation screen appears that has the values of the dropdown lists (date/time/doctor's name) passed into a confirmation text confirmation activity instance booking a dated interface.

CalendarFragment.kt

 package com.example.mydoctor
    
    import...
    
    
    class CalendarFragment : Fragment() {
    
        private lateinit var binding: FragmentCalendarBinding1
    
        override fun onCreate(savedInstanceState: Bundle?) {
            super.onCreate(savedInstanceState)
    
            setHasOptionsMenu(true)
        }
    
        override fun onCreateView(
            inflater: LayoutInflater, container: ViewGroup?,
            savedInstanceState: Bundle?
        ): View? {
    
            super.onCreate(savedInstanceState)
            binding = FragmentCalendarBinding1.inflate(layoutInflater)
    
            val itemsDates = resources.getStringArray(R.array.dates)
            val adapterDate = ArrayAdapter(requireContext(), list_dates, itemsDates)
            binding.autocompleteTextViewDateDropdown.setAdapter(adapterDate)
    
            val itemsTimes = resources.getStringArray(R.array.times)
            val adapterTime = ArrayAdapter(requireContext(), list_times, itemsTimes)
            binding.autocompleteTextViewTimeDropdown.setAdapter(adapterTime)
    
            binding.bookADateButton.setOnClickListener {
                val intent = Intent(requireContext(),ConfirmationActivity::class.java)
                intent.putExtra("Confirmation","Confirmation Value")
                startActivity(intent)
            }
    
            return binding.root
    
        }


}

ConfirmationActivity.kt

package com.example.mydoctor

import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.util.Log

class ConfirmationActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_confirmation)

    val value = intent.getStringExtra("Confirmation").toString()
    Log.d("conf","Values is: ${value}")
}

}

How can I go about that? I know I have to use getExtra() or getStringExtra() but how should I actually get the value from the calendar fragment?

EDIT:

I tried changing the setOnClickListener in the CalendarFragment.kt as follows but it does not seem to work storing the value:

 binding.bookADateButton.setOnClickListener {

            (date_dropdown.getEditText() as AutoCompleteTextView).onItemClickListener =
            OnItemClickListener {
                    adapterView, view, position, _ ->
                    val selectedValue: String? = adapterDate.getItem(position)
                
                }

            val intent = Intent(requireContext(),ConfirmationActivity::class.java)
            intent.putExtra("Confirmation","Confirmation Value")
            startActivity(intent)
        }
android-fragments kotlin android-studio android-activity android
1 Answers

You have to setup your date_dropdown listener outside of the setOnClickListener, otherwise you only start listening to date_dropdown changes after the first click is made, which is already too late.

So change the order in your code

// have a variable to track the last selected value with a larger
// scope somewhere inside your Fragment
var selectedValue: String? = null

(date_dropdown.getEditText() as AutoCompleteTextView).onItemClickListener =
  OnItemClickListener { adapterView, view, position, _ ->
    // this code block is called every time an item is clicked
    selectedValue = adapterDate.getItem(position)
}

binding.bookADateButton.setOnClickListener {
    // this code block is called every time the 'bookADateButton' is clicked       
    val intent = Intent(requireContext(), ConfirmationActivity::class.java)
    intent.putExtra("Confirmation", selectedValue ?: "No value was selected.")
    startActivity(intent)
}

There is also the setOnItemSelectedListener available, if you don't want to rely on clicks/taps.

user_24222240
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