Cleanup for observeForever in TimerAlarmRepository

Author: meenbeese

app/src/main/java/com/meenbeese/chronos/db/TimerAlarmRepository.kt

@@ -6,6 +6,7 @@ import android.os.Build
 
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.Observer
 
 import com.meenbeese.chronos.data.AlarmData
 import com.meenbeese.chronos.data.Preferences
@@ -29,17 +30,23 @@ class TimerAlarmRepository(
     private val _timers = MutableLiveData<List<TimerData>>(emptyList())
     val timers: LiveData<List<TimerData>> get() = _timers
 
+    private val alarmObserver = Observer<List<AlarmEntity>> { entities ->
+        _alarms.postValue(
+            entities.map { it.toData() }
+        )
+    }
+
     init {
         observeAlarms()
         loadTimers()
     }
 
     private fun observeAlarms() {
-        alarmRepository.getAll().observeForever { entities ->
-            _alarms.postValue(
-                entities.map { it.toData() }
-            )
-        }
+        alarmRepository.getAll().observeForever(alarmObserver)
+    }
+
+    fun clear() {
+        alarmRepository.getAll().removeObserver(alarmObserver)
     }
 
     suspend fun insertAlarm(alarm: AlarmEntity): Long {

app/src/main/java/com/meenbeese/chronos/di/AppModule.kt

@@ -8,12 +8,13 @@ import com.meenbeese.chronos.db.TimerAlarmRepository
 import com.meenbeese.chronos.utils.MediaManager
 
 import org.koin.dsl.module
+import org.koin.dsl.onClose
 
 @UnstableApi
 val appModule = module {
     single { MediaManager(get()) }
     single { AlarmDatabase.getDatabase(get()) }
     single { get<AlarmDatabase>().alarmDao() }
     single { AlarmRepository(get()) }
-    single { TimerAlarmRepository(get(), get()) }
+    single { TimerAlarmRepository(get(), get()) } onClose { it?.clear() }
 }