设置时间格式

//设置时间格式
NSDateFormatter *inputFormatter = [[NSDateFormatter
alloc] init];
[inputFormatter setLocale:[[NSLocale
alloc] initWithLocaleIdentifier:@"en_US"]];
[inputFormatter setDateFormat:@"yyyyMMdd"];
NSDate* inputDate = [inputFormatter
dateFromString:self.birthDay.text];
NSLog(@"时间格式 = %@", inputDate);