ios - 初始化 super init 和其他

Question

我收到以下错误:

on the line self = [super init];

无法在方法初始化族之外分配 self

在所有 self.whatever = whatever 上也得到黄色三角形；

“whatever”的局部声明隐藏了实例变量

@synthesize firstName, lastName, emailAdress, password, admin;

//current course funkade med nil men inte @"" vrf ;P
-(id) init
{
    return [self initwithName:@"" lastName:@"" password:@"" admin:@"" currentCourse:nil];
}

-(id) initwithName:(NSString *) firstName
          lastName:(NSString *) lastName
          password:(NSString *) password
             admin:(NSString *) admin
     currentCourse:(NSDictionary *) course
{
    self = [super init];
    if (self) {
        self.firstName = firstName;
        self.lastName = lastName;
        self.password = password;
        self.admin = admin;

    }
    return self;
}

Answer 1

你已经合成了@synthesize firstName, lastName, emailAdress, password, admin;

并且在您的方法中您使用相同的名称

-(id) initwithName:(NSString *) firstName
          lastName:(NSString *) lastName
          password:(NSString *) password
             admin:(NSString *) admin
     currentCourse:(NSDictionary *) course

如果您的编译器支持自动合成，请将这些更改为其他内容或删除合成

-(id) initWithName:(NSString *) aFirstName
          lastName:(NSString *) aLastName
          password:(NSString *) aPassword
             admin:(NSString *) aAdmin
     currentCourse:(NSDictionary *) aCourse
{
    self = [super init];
    if (self) {
        self.firstName = aFirstName;
        self.lastName = aLastName;
        self.password = aPassword;
        self.admin = aAdmin;

    }
    return self;
}