1.date轉(zhuǎn)字符串
NSDateFormatter*formatter =[[NSDateFormatter alloc]init];
//設置日期格式
[formattersetDateFormat:@"yyyy-MM-dd HH:mm:ss"];
//當前日期
NSDate*currentDate =[NSDate date];
NSString*currentDateString =[formatter stringFromDate:currentDate];
NSLog(@"%@",currentDateString);
2.字符串轉(zhuǎn)化為date
NSDateFormatter* dateFormat = [[NSDate Formatteralloc]init];//實例化一個NSDateFormatter對象
[dateFormat setDateFormat:@"yyyy-MM-dd HH:mm:ss"];//設定時間格式,這里可以設置成自己需要的格式
NSDate*date =[dateFormat dateFromString:@"1990-01-02 00:00:01"];
