Complete tasks on background thread

app/src/main/java/org/tasks/receivers/CompleteTaskReceiver.java

@@ -4,6 +4,8 @@ import android.content.Context;
 import android.content.Intent;
 import com.todoroo.astrid.dao.TaskDao;
 import com.todoroo.astrid.data.Task;
+import io.reactivex.Completable;
+import io.reactivex.schedulers.Schedulers;
 import javax.inject.Inject;
 import org.tasks.injection.BroadcastComponent;
 import org.tasks.injection.InjectingBroadcastReceiver;
@@ -23,12 +25,17 @@ public class CompleteTaskReceiver extends InjectingBroadcastReceiver {
     long taskId = intent.getLongExtra(TASK_ID, 0);
     boolean flipState = intent.getBooleanExtra(TOGGLE_STATE, false);
     Timber.i("Completing %s", taskId);
-    Task task = taskDao.fetch(taskId);
-    if (task != null) {
-      taskDao.setComplete(task, !flipState || !task.isCompleted());
-    } else {
-      Timber.e("Could not find task with id %s", taskId);
-    }
+    Completable.fromAction(
+            () -> {
+              Task task = taskDao.fetch(taskId);
+              if (task != null) {
+                taskDao.setComplete(task, !flipState || !task.isCompleted());
+              } else {
+                Timber.e("Could not find task with id %s", taskId);
+              }
+            })
+        .subscribeOn(Schedulers.io())
+        .subscribe();
   }
 
   @Override