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我目前正在iphone增強現實應用程序中，我已經添加poi在相機視圖，但我的應用程序崩潰和它的拋出異常（CALayer NAN 15）。 以下是我正在使用的代碼。維基應用程序崩潰（poi添加問題）iphone 4.0
wikitudeAR = [[WikitudeARViewController alloc] initWithDelegate:self applicationPackage:nil applicationKey:nil; applicationName:nil developerName:nil];
- (void) verificationDidSucceed {
id appDelegate=[[UIApplication sharedApplication]delegate];
UIWindow *window = [appDelegate window];
[window addSubview:[wikitudeAR start];
}
- (void) verificationDidFail {
}
- (void) didUpdateToLocation: (CLLocation*) newLocation
fromLocation: (CLLocation*) oldLocation {
}
-(void) APIFinishedLoading
{ //arr is current location data
NSMutableArray *addPOIData=[[NSMutableArray alloc]init];
for(int i=0;i<[arr count];i++)
{
NSDictionary *dict= [arr objectAtIndex:i];
WTPoi* poi = [[WTPoi alloc] initWithName:currentMapLocation.locationTitle AndLatitude:[[dict objectforKey:@"lat"]doubleValue]AndLongitude:[[dict objectforKey:@"long"]doubleValue]];
poi.icon = @"http://img560.imageshack.us/img560/9931/parking.png";
poi.shortDescription = @"Open Monday to Friday 6:30 to 7pm. Tariff plan range from £5";
poi.thumbnail = @"http://img560.imageshack.us/img560/9931/parking.png";
[addPOIData addObject: poi];
[poi release];
}
[[WikitudeARViewController sharedInstance] addPOIs: addPOIData];
[addPOIData release];
}
請幫助我。 在此先感謝。