public static async Task <bool> AddLesson(Lesson lesson, string year = null, string term = null) { var lessonList = ((App)App.Current).LessonList; lessonList.Add(lesson); SQLiteService.InsertLesson(lesson.id, lesson.courseId, lesson.week, lesson.day, lesson.homework, lesson.studyMaterial, lesson.studyState); return(true); }