not able to save information to firebase-CodePudding

I m tring to save course details from the filled form to firebase-database by calling the below function but I m getting some error. Here is a part of my code:

Future<void>saveCourseDataToDb(courseName, courseDescription,coursePrice,yearsOfExp, cities) async{
var timeStamp = Timestamp.now().microsecondsSinceEpoch;

FirebaseUser teacher= FirebaseAuth.instance.currentUser as FirebaseUser;
CollectionReference _courses = Firestore.instance.collection('courses');
try{
  _courses.document(timeStamp.toString()).setData({
    'tutor': {'TeacherName': this.TeacherName, 'Teacherid': teacher.uid },
    'courseName': courseName,
    'courseDescription': courseDescription,
    'coursePrice': coursePrice,
    'yearsOfExp': yearsOfExp,
    'cities': cities,
    'category' : {'categoryName': this.selectedCategory, 'categoryImage': this.categoryImage},
    //'certificate': certificate,
    'published': false,
    'courseId': timeStamp.toString(),
    'courseImage': this.courseURL,
    'certificate' : this.certificateURL
  });
  ErrorAlertDialog(message: 'Course Details saved successfully',);
}catch(e){
  ErrorAlertDialog(message: '${e.toString()}',);
}
return null;

}

I get this error:

And when I declare teacher with Future I get an error related to uid, here is a picture about the same.

Any help would be really appreciated!!

CodePudding user response：

FirebaseUser is a Future, which means you have to "wait" for it to arrive. Try like this

FirebaseUser teacher = await FirebaseAuth.instance.currentUser;

CodePudding user response：

instead of using

Future<FirebaseUser>

use

Future<User>

FirebaseUser has been changed to User long time ago & also use await before FirebaseAuth.instance.currentUser;

hope this may work