add option to disable predictions

app/src/main/java/net/vonforst/evmap/storage/PreferenceDataSource.kt

@@ -246,4 +246,7 @@ class PreferenceDataSource(val context: Context) {
         set(value) {
             sp.edit().putString("place_search_result_android_auto_name", value).apply()
         }
+
+    val predictionEnabled: Boolean
+        get() = sp.getBoolean("prediction_enabled", true)
 }

app/src/main/java/net/vonforst/evmap/viewmodel/MapViewModel.kt

@@ -215,6 +215,8 @@ class MapViewModel(application: Application, private val state: SavedStateHandle
 
     val prediction: LiveData<Resource<List<FronyxEvseIdResponse>>> by lazy {
         availability.switchMap { av ->
+            if (!prefs.predictionEnabled) return@switchMap null
+
             av.data?.evseIds?.let { evseIds ->
                 liveData {
                     emit(Resource.loading(null))

app/src/main/res/values-de/strings.xml

@@ -277,4 +277,6 @@
         <item quantity="one">%1$d/%2$d verfügbar</item>
         <item quantity="other">%1$d/%2$d verfügbar</item>
     </plurals>
+    <string name="pref_prediction_enabled">Auslastungsprognosen anzeigen</string>
+    <string name="pref_prediction_enabled_summary">für unterstützte Ladestationen\n(momentan nur Schnellader in Deutschland)</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -276,4 +276,6 @@
         <item quantity="one">%1$d/%2$d available</item>
         <item quantity="other">%1$d/%2$d available</item>
     </plurals>
+    <string name="pref_prediction_enabled">Show utilization predictions</string>
+    <string name="pref_prediction_enabled_summary">for supported chargers\n(currently only DC in Germany)</string>
 </resources>

app/src/main/res/xml/settings_data.xml

@@ -9,6 +9,12 @@
             android:entryValues="@array/pref_data_source_values"
             android:defaultValue="goingelectric"
             app:useSimpleSummaryProvider="true" />
+
+        <CheckBoxPreference
+            android:key="prediction_enabled"
+            android:title="@string/pref_prediction_enabled"
+            android:defaultValue="true"
+            android:summary="@string/pref_prediction_enabled_summary" />
     </PreferenceCategory>
     <PreferenceCategory android:title="@string/settings_map">