fix : 장소 검색 초기화 되는 문제 해결

Author: koreatlwls

presentation/src/main/java/com/stop/bindingadapter/EditTextBindingAdapter.kt

@@ -0,0 +1,25 @@
+package com.stop.bindingadapter
+
+import android.text.Editable
+import android.text.TextWatcher
+import android.widget.EditText
+import kotlinx.coroutines.channels.awaitClose
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.callbackFlow
+import kotlinx.coroutines.flow.onStart
+
+fun EditText.textChangesToFlow(): Flow<CharSequence?> {
+    return callbackFlow {
+        val listener = object : TextWatcher {
+            override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) = Unit
+            override fun afterTextChanged(s: Editable?) = Unit
+            override fun onTextChanged(text: CharSequence?, start: Int, before: Int, count: Int) {
+                trySend(text)
+            }
+        }
+        addTextChangedListener(listener)
+        awaitClose { removeTextChangedListener(listener) }
+    }.onStart {
+        emit(text)
+    }
+}

presentation/src/main/java/com/stop/ui/placesearch/PlaceSearchFragment.kt

@@ -15,9 +15,11 @@ import androidx.lifecycle.flowWithLifecycle
 import androidx.lifecycle.lifecycleScope
 import androidx.navigation.findNavController
 import com.stop.R
+import com.stop.bindingadapter.textChangesToFlow
 import com.stop.databinding.FragmentPlaceSearchBinding
 import com.stop.domain.model.nearplace.PlaceUseCaseItem
 import dagger.hilt.android.AndroidEntryPoint
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.FlowPreview
 import kotlinx.coroutines.flow.debounce
 import kotlinx.coroutines.flow.launchIn
@@ -64,10 +66,10 @@ class PlaceSearchFragment : Fragment() {
     }
 
     private fun initAdapter() {
-        placeSearchAdapter = PlaceSearchAdapter{
+        placeSearchAdapter = PlaceSearchAdapter {
             clickPlace(it)
         }
-        recentPlaceSearchAdapter = RecentPlaceSearchAdapter{
+        recentPlaceSearchAdapter = RecentPlaceSearchAdapter {
             clickPlace(it)
         }
 
@@ -136,16 +138,17 @@ class PlaceSearchFragment : Fragment() {
     }
 
     @OptIn(FlowPreview::class)
-    private fun observeSearchKeyword(){
-        placeSearchViewModel.searchKeyword.debounce(100)
-            .onEach {
-                if(it.isBlank()){
-                    placeSearchViewModel.setNearPlacesEmpty()
-                }else{
-                    placeSearchViewModel.getNearPlaces(it)
+    private fun observeSearchKeyword() {
+        lifecycleScope.launch(Dispatchers.IO) {
+            val editTextFlow = binding.textInputEditTextPlaceSearch.textChangesToFlow()
+
+            editTextFlow
+                .debounce(500)
+                .onEach {
+                    placeSearchViewModel.getNearPlaces(it.toString())
                 }
-            }
-            .launchIn(lifecycleScope)
+                .launchIn(this)
+        }
     }
 
     override fun onDestroyView() {

presentation/src/main/java/com/stop/ui/placesearch/PlaceSearchViewModel.kt

@@ -1,6 +1,5 @@
 package com.stop.ui.placesearch
 
-import android.text.Editable
 import android.view.View
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
@@ -28,12 +27,13 @@ import kotlin.math.round
 class PlaceSearchViewModel @Inject constructor(
     private val getNearPlacesUseCase: GetNearPlacesUseCase,
     private val geoLocationUseCase: GeoLocationUseCase,
-    private val getRecentPlaceSearchUseCase: GetRecentPlaceSearchUseCase,
+    getRecentPlaceSearchUseCase: GetRecentPlaceSearchUseCase,
     private val deleteRecentPlaceSearchUseCase: DeleteRecentPlaceSearchUseCase,
     private val insertRecentPlaceSearchUseCase: InsertRecentPlaceSearchUseCase
 ) : ViewModel() {
 
-    var currentLocation = Location(0.0, 0.0)
+    // 기본 주소로 서울역 주소 지정
+    var currentLocation = Location(37.553836, 126.969652)
 
     var panelInfo: com.stop.model.route.Place? = null
 
@@ -52,9 +52,6 @@ class PlaceSearchViewModel @Inject constructor(
     private val clickCurrentLocationChannel = Channel<Boolean>()
     val clickCurrentLocation = clickCurrentLocationChannel.receiveAsFlow()
 
-    private val _searchKeyword = MutableStateFlow("")
-    val searchKeyword: StateFlow<String> = _searchKeyword
-
     private val _geoLocation = MutableLiveData<GeoLocationInfo>()
     val geoLocation: LiveData<GeoLocationInfo> = _geoLocation
 
@@ -64,17 +61,9 @@ class PlaceSearchViewModel @Inject constructor(
     private val _distance = MutableLiveData<Float>()
     val distance: LiveData<Float> = _distance
 
-    val recentPlaceSearch: StateFlow<List<PlaceUseCaseItem>> =
-        getRecentPlaceSearchUseCase.getAllRecentPlaceSearch()
-            .stateIn(
-                scope = viewModelScope,
-                started = SharingStarted.WhileSubscribed(),
-                initialValue = emptyList()
-            )
-
-    fun afterTextChanged(s: Editable?) {
-        _searchKeyword.value = s.toString()
-    }
+    val recentPlaceSearch: StateFlow<List<PlaceUseCaseItem>> = getRecentPlaceSearchUseCase.getAllRecentPlaceSearch().stateIn(
+            scope = viewModelScope, started = SharingStarted.WhileSubscribed(), initialValue = emptyList()
+        )
 
     fun getNearPlaces(
         searchKeyword: String,
@@ -83,9 +72,7 @@ class PlaceSearchViewModel @Inject constructor(
             try {
                 _nearPlaces.emit(
                     getNearPlacesUseCase.getNearPlaces(
-                        searchKeyword,
-                        currentLocation.longitude,
-                        currentLocation.latitude
+                        searchKeyword, currentLocation.longitude, currentLocation.latitude
                     )
                 )
 
@@ -99,7 +86,6 @@ class PlaceSearchViewModel @Inject constructor(
 
     fun setNearPlacesEmpty() {
         _nearPlaces.value = emptyList()
-        _searchKeyword.value = ""
         _isNearPlacesNotEmpty.value = false
     }
 

presentation/src/main/res/layout/fragment_place_search.xml

@@ -55,7 +55,6 @@
                 android:id="@+id/text_input_edit_text_place_search"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:afterTextChanged="@{viewModel::afterTextChanged}"
                 android:hint="@string/location_address_search_text"
                 android:imeOptions="actionSearch"
                 android:inputType="text" />