拋出異常[__NSDate長]：無法識別選擇

這是我的代碼：拋出異常[__NSDate長]：無法識別選擇

- (void)connectionDidFinishLoading:(NSURLConnection *)connection { 


NSString *str = [[[NSString alloc] initWithData:buffer encoding:NSUTF8StringEncoding] autorelease]; 
NSLog(@"str: %@",str); 

NSDictionary *dict = [str JSONValue]; 

NSDateFormatter *fmt = [[[NSDateFormatter alloc] init] autorelease]; 
[fmt setDateFormat:@"yyyy-MM-dd"]; 



NSArray *array = [[dict objectForKey:@"event"] retain]; 

NSLog(@"Array: %@",array); 



for (NSDictionary *tempdict in array) 
{ 


    NSDate *d = [fmt dateFromString:[tempdict objectForKey:@"eve_date"]]; 
    NSLog(@"Date %@",d); 
    NSLog(@"Date of event %@",[tempdict objectForKey:@"eve_date"]); 

    NSDate *t =[tempdict objectForKey:@"eve_date"]; 
      NSLog(@"Date of t %@",t); 
    NSLog(@"This is title_event %@",[tempdict objectForKey:@"title"]); 
    NSLog (@"Time of event %@", [tempdict objectForKey:@"eve_time"]); 
    NSLog(@"This is description %@",[tempdict objectForKey:@"description"]); 

[eventPHP addObject:[Events eventsNamed:[tempdict objectForKey:@"title"] description:[tempdict objectForKey:@"description"] date:t]];} 
dataReady = YES; 
[callback loadedDataSource:self];} 



+ (Events*)eventsNamed:(NSString *)atitle description:(NSString *)adescription date:(NSDate *)aDate { 

return [[[Events alloc] initWithName:atitle description:adescription date:aDate] autorelease]; }

是打印我的所有數據正常，但在這一行

[eventPHP addObject:[Events eventsNamed:[tempdict objectForKey:@"title"] description:[tempdict objectForKey:@"description"] date:t]];

有例外：

**由於未捕獲異常'NSInvalidArgumentException'而終止應用程序，原因：' - [__ NSDate長度]：無法識別的選擇程序發送到實例0x6149cb0'

來源

2011-12-25 Tahanie ALsanie

什麼類是eventPHP？它是一個NSArray？ – 2011-12-25 22:42:40

請發送initWithName：atitle描述：adescription date：事件的日期方法 – 2011-12-25 22:44:04

代碼示例應該是完整和簡潔的。請提供[最小樣本]（http://sscce.org/）。當前示例有無關的代碼。 – outis 2011-12-25 22:51:32

你要發送的length消息給NSDate對象，但NSDate對象不瞭解length消息。您沒有向我們展示發送該消息的代碼。

如果設置objc_exception_throw斷點時，Xcode會在調試程序停止您的應用程序發生異常時，這樣你就可以清楚地看到在發送length消息哪裏。

來源

2011-12-25 22:45:29

雅我使用NSLog在initWhithName行中返回自我有例外 – 2011-12-26 16:49:26

拋出異常[__NSDate長]：無法識別選擇

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