我需要帮助在我的iPhone应用程序中调试方法

Question

我是iPhone应用程序和目标c的新手，我无法弄清楚我的方法出了什么问题，总体思路是它包含一个包含纬度和经度的plist，用户输入到文本字段中的数组中存储的数据，然后在该位置输出一个引脚。任何建议将不胜感激。我只发布了该方法的代码，但如果应用程序的其他部分有助于调试我的代码，那么我很乐意发布它。

-(IBAction) showBus { 

[busNum resignFirstResponder]; 

bus *currentBus = [[bus alloc] init]; 


NSString *txtFieldData = [[NSString alloc] initWithString: busNum.text]; 



//get data from plist 
NSString *myFile = [[NSBundle mainBundle] pathForResource:@"busLocations" ofType:@"plist"]; 
NSDictionary *dictionary = [[NSDictionary alloc] initWithContentsOfFile: myFile]; 

[myFile release]; 

[currentBus setLat:[[dictionary objectForKey:txtFieldData] objectAtIndex:0]]; 
[currentBus setLong:[[dictionary objectForKey:txtFieldData] objectAtIndex:1]]; 
//[currentBus setName:[[dictionary objectForKey:txtFieldData] objectAtIndex:2]]; 

[txtFieldData release]; 
[dictionary release]; 

int latit = [[currentBus Lat] intValue]; 
int longit = [[currentBus Long] intValue]; 
NSLog(@"latitude is %d and longitude is %d",latit,longit); 

/* 
[mapView setMapType:MKMapTypeStandard]; 
[mapView setZoomEnabled:YES]; 
[mapView setScrollEnabled:YES]; 
*/ 

MKCoordinateRegion region = { {0.0, 0.0 }, { 0.0, 0.0 } }; 
region.center.latitude = latit; 
region.center.longitude = longit; 


region.span.longitudeDelta = 0.01f; 
region.span.latitudeDelta = 0.01f; 

[mapView setRegion:region animated:YES]; 
[mapView setDelegate:self]; 


DisplayMap *ann = [[DisplayMap alloc] init]; 

ann.title = @"Bus %@",[currentBus name]; 
ann.coordinate = region.center; 

[mapView addAnnotation:ann]; 
//[ann release]; 



[currentBus release]; 

} 

感谢您的帮助

Answer 1

你不应该释放MYFILE（你没有分配它），你应该释放安（你没有分配该）。