Question

我正在开发一款应用，并试图根据星期几来获得不同的文字标签信息。恩。如果

Monday: "Today's Hours are: 8:00am - 6:00pm"
Tuesday: "Today's Hours are: 8:00am - 6:00pm"
Wednesday: "Today's Hours are: 8:00am - 6:00pm"
Thursday: "Today's Hours are: 8:00am - 6:00pm"
Friday: "Today's Hours are: 8:00am - 6:00pm"
Saturday: "Today's Hours are: 9:00am - 2:00pm"
Sunday: "Sorry we are closed today"

我在故事板中创建了一个标签，并希望它根据应用程序打开的日期更改消息。

感谢您的帮助！

Answer 1

你必须使用一个字符串数组，其中包含7个项目（索引从0到6），并根据当前工作日将其中一个字符串分配给标签的text属性。

Answer 2

您可以在viewDidLoad方法中使用此代码

 NSDate* currentDate = [NSDate date];
NSTimeZone* currentTimeZone = [NSTimeZone timeZoneWithAbbreviation:@"GMT"];
NSTimeZone* nowTimeZone = [NSTimeZone systemTimeZone];

NSInteger currentGMTOffset = [currentTimeZone secondsFromGMTForDate:currentDate];
NSInteger nowGMTOffset = [nowTimeZone secondsFromGMTForDate:currentDate];

NSTimeInterval interval = nowGMTOffset - currentGMTOffset;
NSDate* nowDate = [[NSDate alloc] initWithTimeInterval:interval sinceDate:currentDate];

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"EEEE"];
NSString *dayName = [dateFormatter stringFromDate:nowDate];

NSString *timing = @"8:00am - 6:00pm";
NSString *description =@"Today's Hours are";
NSArray *days = @[@"Monday",@"Tuesday",@"Wednesday",@"Thursday",@"Friday",@"Saturday",@"Sunday",];

for (NSString *str in days) {
    if ([str isEqualToString:@"Saturday"]) {
        timing = @"9:00am - 2:00pm";
    }
    if ([str isEqualToString:@"Sunday"]) {
        description = @"Sorry we are closed today";
        timing = nil;
    }
    if ([str isEqualToString:dayName]) {
        NSLog(@"%@ : %@ :%@",str,description,timing);
        //here you can write yourLabelname.text =[NSString stringWithFormat:@"%@ : %@ :%@",str,description,timing];
    }
}

这将根据当前日期给你结果

如何动态更改文本字段

2 个答案: