我正在尝试使用词典功能...有些站点告诉我查看我的情节提要,但我还没有创建一个。。?
NSMutableDictionary * AllStudentsUpdated = [[NSDictionary alloc]initWithObjectsAndKeys:
@"Avni Parikh", @"012700",
@"Kyle Kurt", @"325325",
@"Vidhi Shah", @"122146"
, nil];
[AllStudentsUpdated setObject:@"Pallavi Patel" forKey:@"161616"];// this is where the error is
您正在用NSDictionary初始化NSMutableDictionary ...只需将代码更新为此。
NSMutableDictionary *AllStudentsUpdated = [[NSMutableDictionary alloc] initWithObjectsAndKeys: @"Avni Parikh", @"012700", @"Kyle Kurt", @"325325", @"Vidhi Shah", @"122146" , nil];
[AllStudentsUpdated setObject:@"Pallavi Patel" forKey:@"161616"];
清理您的构建文件夹并运行您的应用程序。这样可以解决您的问题。