Question

我正在尝试将服务的日期作为默认日期，并在uidatepicker中进行选择。我尝试了一些东西，但它没有用。

    NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar] ;
    NSDateComponents *components = [[NSDateComponents alloc] init];
    [components setYear:[[tempBirthDate substringToIndex:4] integerValue]];
    [components setMonth:[[tempString substringFromIndex:5] integerValue]];
    [components setDay:[[tempBirthDate substringFromIndex:8] integerValue]];
    NSDate *defualtDate = [calendar dateFromComponents:components];
    [datePicker setDate:defualtDate];

我缺少什么？

你能帮我解决一下吗？

例如：值来自服务，如03/19/1986

我希望它由选择器选择。

Answer 1

NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar] ;
NSDateComponents *components = [[NSDateComponents alloc] init];
[components setYear:[[tempBirthDate substringWithRange:NSMakeRange(6, 4)] integerValue]];
[components setMonth:[[tempBirthDate substringWithRange:NSMakeRange(0, 2)] integerValue]];
[components setDay:[[tempBirthDate substringWithRange:NSMakeRange(3, 2)] integerValue]];
NSDate *defualtDate = [calendar dateFromComponents:components];
[datePicker setDate:defualtDate];

Answer 2

您可以使用NSDateFormatter将日期放入日期选择器：

NSDateFormatter *formatter = [[NSDateFormatter alloc] init] ;
[formatter setDateFormat:@"MM/dd/yyyy"];
NSDate *date = [formatter dateFromString:dateFromServer];
[datePicker setDate:date];

在UIDatePicker中选择特定日期？

2 个答案: