所以我试图在用户进入他们的生日时自动在2位数之间添加斜杠,但由于某种原因,当生日以0开始时,数字格式化程序会删除它并弄乱生日。我在下面有我的代码,有人可以帮我弄明白怎么做吗?提前谢谢!
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init] ;
[formatter setGroupingSeparator:@"/"];
[formatter setGroupingSize:2];
[formatter setUsesGroupingSeparator:YES];
[formatter setSecondaryGroupingSize:2];
NSString *num = textField.text ;
if(![num isEqualToString:@""])
{
num= [num stringByReplacingOccurrencesOfString:@"/" withString:@""];
NSString *str = [formatter stringFromNumber:[NSNumber numberWithDouble:[num doubleValue]]];
textField.text=str;
}
答案 0 :(得分:1)
这样的事情可能有所帮助:
NSMutableString *string = @"YOUR TEXTFIELD TEXT";
NSString *lastString = [string substringWithRange:NSMakeRange(string.length-2, 1)];
if ([lastString isEqualToString:@"/"]) {
return;
}
if (string.length == 2 || string.length == 5) {
[string appendString:@"/"];
}
答案 1 :(得分:1)
您可以做的是:
我不说这是推荐的,但它可能对你有所帮助!
- (void)controlTextDidChange:(NSNotification *)obj{
NSString *num = [textField stringValue] ;
if (num.length%2==0)
{
NSString *someText = [NSString stringWithFormat: @"%@/ ", num];
num = someText;
}
textField.stringValue = num;
}