iOS NSDate本地化

1.

NSDateFormatter *outputFormatter = [[NSDateFormatter alloc] init];
    [outputFormatter setLocale:[NSLocale currentLocale]];
    [outputFormatter setDateFormat:@"yyyy/MM/dd HH:mm:ss"];
NSLog(@"%@",[outputFormatter stringFromDate:[NSDate date]);

2.

NSString *deviceLanguage = [[NSLocale preferredLanguages] objectAtIndex:];
    NSDateFormatter *dateFormatter = [NSDateFormatter new];
    NSLocale *locale = [[NSLocale alloc]initWithLocaleIdentifier:deviceLanguage];

    [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss EEEE dd MMMM"];
    [dateFormatter setLocale:locale];

    NSLog(@"\nLocal Time = %@",[dateFormatter stringFromDate:[NSDate date]]);