SelectCollegeFragment.kt

package com.example.ssul

import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.AdapterView
import android.widget.ArrayAdapter
import android.widget.Spinner
import androidx.fragment.app.Fragment
import androidx.fragment.app.activityViewModels
import androidx.navigation.fragment.findNavController
import com.example.ssul.viewmodel.DegreeViewModel

class SelectCollegeFragment : Fragment() {

    private val viewModel: DegreeViewModel by activityViewModels()

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        return inflater.inflate(R.layout.fragment_select_college, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        val collegeSpinner: Spinner? = view.findViewById(R.id.collegeSpinner)
        collegeSpinner?.let {
            val colleges = listOf(
                "단과 대학",
                "IT대학",
                "인문대학",
                "법과대학",
                "공과대학",
                "자연과학대학",
                "사회과학대학",
                "경제통상대학",
                "경영대학",
                "융합특성화자유전공학부",
                "차세대반도체학과",
                "베어드교양학과"
            )

            val adapter = ArrayAdapter(requireContext(), R.layout.spinner_item, colleges)
            adapter.setDropDownViewResource(R.layout.spinner_dropdown_item)
            it.adapter = adapter

            it.onItemSelectedListener = object : AdapterView.OnItemSelectedListener {
                override fun onItemSelected(
                    parent: AdapterView<*>?,
                    view: View?,
                    position: Int,
                    id: Long
                ) {
                    // 기본 텍스트가 아닌 항목이 선택된 경우에만 처리
                    if (position != 0) {
                        val selectedCollege = colleges[position]
                        viewModel.setCollege(selectedCollege) // 선택한 단과대 저장
                        findNavController().navigate(R.id.action_selectCollegeFragment_to_selectDepartmentFragment)
                    }
                }

                override fun onNothingSelected(parent: AdapterView<*>?) {
                    // 아무것도 선택되지 않은 상태일 때의 처리가 필요한 경우 여기에 추가
                }
            }
        } ?: run {
            // Spinner가 null일 경우 처리
            throw RuntimeException("College Spinner is missing in fragment_select_college.xml")
        }
    }
}