如何使用格式化程序將字符串日期轉換爲nsdate？

Question

我按照stackOverflow的答案和寫一個代碼，但我不知道發生了什麼，它不會工作。任何人都可以爲我解決它。我使用愚蠢的代碼....

 NSMutableArray *movieDate; 
    NSArray *temp1 = [_dicUpcomingMovie objectForKey:@"results"]; 
    for (NSDictionary *temp2 in temp1) 
    { 
     NSDateFormatter *formatter = [[NSDateFormatter alloc]init]; 

     NSString *datestring = [temp2 valueForKey:@"release_date"]; 
     //NSDate *myDate = [[NSDate alloc]init]; 
     [formatter setDateFormat:@"dd MMM,YYYY"]; 
     NSDate *date = [formatter dateFromString:datestring]; 
     NSLog(@"%@",date); 
     [movieDate addObject:date]; 
     NSLog(@"%@",movieDate); 
    } 

所以這就是它。上面的代碼是不工作的myDate對象仍然沒有

Answer 1

我相信datestring不符合您指定的格式。有關完整示例，請參閱NSDateFormatter。

Answer 2

試試這個，

NSMutableArray *movieDate; 
    NSArray *temp1 = [_dicUpcomingMovie objectForKey:@"results"]; 
    for (NSDictionary *temp2 in temp1) 
    { 
     NSDateFormatter *formatter = [[NSDateFormatter alloc]init]; 

     NSString *datestring = [temp2 valueForKey:@"release_date"]; 
     //NSDate *myDate = [[NSDate alloc]init]; 
     [formatter setDateFormat:@"dd MM,YYYY"]; 
     NSDate *date = [formatter dateFromString:datestring]; 
     NSLog(@"%@",date); 
     [movieDate addObject:date]; 
     NSLog(@"%@",movieDate); 
    } 

Answer 3

NSMutableArray *movieDate=[[NSMutableArray alloc]init];; 
    NSArray *temp1 = [_dicUpcomingMovie objectForKey:@"results"]; 
    NSDateFormatter *formatter = [[NSDateFormatter alloc]init]; 
    for (int i=0 ;i<temp1.count;i++) 
    { 


    NSString *datestring = [[temp1 objectatindex:i]valueForKey:@"release_date"]; 

    [serverFormatter setTimeZone:[NSTimeZone localTimeZone]]; 
    [serverFormatter setDateFormat:@"dd,MMM,YYYY"]; 
    NSDate *date = [serverFormatter dateFromString:dateString1]; 

    [movieDate addObject:date]; 

} 
    NSLog(@"%@",movieDate);