Iphone ASITPPrequest问题&引用;已将无法识别的选择器发送到实例";
我在使用AsitpRequest时遇到问题。这是我得到的错误:Iphone ASITPPrequest问题&引用;已将无法识别的选择器发送到实例";,iphone,asihttprequest,iphone-sdk-3.2,mkannotation,Iphone,Asihttprequest,Iphone Sdk 3.2,Mkannotation,我在使用AsitpRequest时遇到问题。这是我得到的错误: 2010-04-11 20:47:08.176 citybikesPlus[5885:207] *** -[CALayer rackDone:]: unrecognized selector sent to instance 0x464a890 2010-04-11 20:47:08.176 citybikesPlus[5885:207] *** Terminating app due to uncaught exception '
2010-04-11 20:47:08.176 citybikesPlus[5885:207] *** -[CALayer rackDone:]: unrecognized selector sent to instance 0x464a890
2010-04-11 20:47:08.176 citybikesPlus[5885:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[CALayer rackDone:]: unrecognized selector sent to instance 0x464a890'
2010-04-11 20:47:08.176 citybikesPlus[5885:207] Stack: (
33936475,
2546353417,
34318395,
33887862,
33740482,
126399,
445238,
33720545,
33717320,
40085013,
40085210,
3108783,
11168,
11022
)
这是我的代码(部分代码):
当注释加载到my mapview中时,该过程将作为调用编号中的LeftCallout视图加载,所以加载次数相当多(大约80次)。
它意味着从服务器检索XML Plist,解析它并使用数据。。。但它在拉克多死了:
有人有什么想法吗
问候,,
Paul Peelen好吧,问题似乎是您的
networkQueue
对象(无论是什么NSOperationsQueue子类?)正在将rackDone:
消息发送到viewController的视图,而不是viewController本身。Calayer是视图的属性,而不是ViewController,因此错误必须来自视图
检查网络队列
的代码
您似乎也没有为
networkQueue
使用self
表示法,如果它是类的属性,它可能会在没有警告的情况下死亡,因为它没有正确保留 我使用[self-retain]
找到了解决方案。似乎因为我经常加载对象,所以它自身分配的时间不够长,无法接收rackDone:action
现在可以了。现在我只需要弄清楚如何根据请求加载,而不是在加载应用程序时加载
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
[image setImage:[UIImage imageNamed:@"bullet_rack.png"]];
BikeAnnotation *bike = [[annotationView annotation] retain];
bike._sub = @"";
[super viewDidLoad];
NSString *newUrl = [[NSString alloc] initWithFormat:rackUrl, bike._id];
NSString *fetchUrl = [newUrl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
[networkQueue cancelAllOperations];
[networkQueue setRequestDidFinishSelector:@selector(rackDone:)];
[networkQueue setRequestDidFailSelector:@selector(processFailed:)];
[networkQueue setDelegate:self];
ASIFormDataRequest *request = [[[ASIFormDataRequest alloc] initWithURL:[NSURL URLWithString:fetchUrl]] retain];
[request setDefaultResponseEncoding:NSUTF8StringEncoding];
[networkQueue addOperation:request];
[networkQueue go];
}
- (void)rackDone:(ASIHTTPRequest *)request
{
NSString *resultSearch = [request responseString];
NSData *data = [resultSearch dataUsingEncoding:NSUTF8StringEncoding];
NSString *errorDesc = nil;
NSPropertyListFormat format;
NSDictionary * dict = (NSDictionary*)[NSPropertyListSerialization
propertyListFromData:data
mutabilityOption:NSPropertyListMutableContainersAndLeaves
format:&format
errorDescription:&errorDesc];
rackXmlResult* fileResult = [[[rackXmlResult alloc] initWithDictionary:dict] autorelease];
rackXmlSet *rackSet = [fileResult getRackResult];
NSString *subString = [[NSString alloc] initWithFormat:@"Cyklar tillgängligt: %@ -- Lediga platser: %@", rackSet._ready_bikes, rackSet._empty_locks];
[activity setHidden:YES];
[image setHidden:NO];
BikeAnnotation *bike = [annotationView annotation];
bike._sub = subString;
}
- (void) processFailed:(ASIHTTPRequest *)request
{
UIAlertView *errorView;
NSError *error = [request error];
NSString *errorString = [error localizedDescription];
errorView = [[UIAlertView alloc]
initWithTitle: NSLocalizedString(@"Network error", @"Network error")
message: errorString
delegate: self
cancelButtonTitle: NSLocalizedString(@"Close", @"Network error") otherButtonTitles: nil];
[errorView show];
[errorView autorelease];
}