我为聊天应用程序编写了代码，适用于 iOS 12 但在 iOS 13 中，它返回 nil 值

Question

I have written code for chat application,works fine for iOS 12,and in iOS 13, it return nil value.

this is my code snippet for dateformatter.

-(NSDate *)stringToDateNew:(NSString*)strDate withForamt:(NSString *)strFormat {
   @try
   {
       NSDate *myDate;

       if(strDate!=NULL)
       {
           NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
           [dateFormat setDateFormat:[NSString stringWithFormat:@"%@",strFormat]];
           NSLocale * enUSPOSIXLocale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"] ;
           if (enUSPOSIXLocale == nil) {
               enUSPOSIXLocale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"];
           }
           else
           {
            [dateFormat setTimeZone:[NSTimeZone systemTimeZone]];
            [dateFormat setLocale:enUSPOSIXLocale];
            myDate = [dateFormat dateFromString:strDate];
            return myDate;
           }

       }
       return NULL;

   }
   @catch (NSException *exception)
   {
       NSLog(@"Excption in AppDelegate : stringToDate %@:%@",exception.name,exception.reason);
   }
}

Answer 1

use the withformat "yyyy-mm-dd'T'hh:mm:ss.SSS".It Will work for os 13 as well.