[Android] Fix crashlytics issue with service on Android 12+

android/build.gradle

@@ -46,3 +46,8 @@ android {
         minSdkVersion 19
     }
 }
+
+dependencies {
+    implementation 'androidx.work:work-runtime:2.7.1'
+    implementation 'com.google.guava:guava:27.0.1-android'
+}

android/src/main/kotlin/com/gdelataillade/alarm/alarm/AlarmReceiver.kt

@@ -4,14 +4,19 @@ import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
 import android.os.Build
+import androidx.work.OneTimeWorkRequest
+import androidx.work.WorkManager
 import io.flutter.Log
 
 class AlarmReceiver : BroadcastReceiver() {
     override fun onReceive(context: Context, intent: Intent) {
         val serviceIntent = Intent(context, AlarmService::class.java)
         serviceIntent.putExtras(intent)
 
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
+            val request = OneTimeWorkRequest.Builder(AlarmWorker::class.java).addTag(AlarmWorker.TAG).build()
+            WorkManager.getInstance(context).enqueue(request)
+        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
             context.startForegroundService(serviceIntent)
         } else {
             context.startService(serviceIntent)

android/src/main/kotlin/com/gdelataillade/alarm/alarm/AlarmWorker.kt

@@ -0,0 +1,17 @@
+package com.gdelataillade.alarm.alarm
+
+import android.content.Context
+import androidx.work.Worker
+import androidx.work.WorkerParameters
+
+
+class AlarmWorker(context: Context, workerParams: WorkerParameters) : Worker(context, workerParams) {
+    companion object {
+        const val TAG = "AlarmWorker"
+    }
+
+    override fun doWork(): Result {
+        //call methods to perform background task
+        return Result.success()
+    }
+}