Objective-C类参考:符号未找到错误
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12-11-2019 - |
题
我已经在这个iPhone应用程序上工作了一段时间,我已经完全完成并工作了。我正在扩展的项目是从我的教授也给我访问的subversion在线存储库下载的。我不小心没有下载"根"副本或类似的东西,所以我无法提交任何更改到存储库。在导师的帮助下,我今天下载了根副本,并将我所有的类文件添加到其中,以便我可以提交更改。但是,我现在得到了3个我从未见过的奇怪错误:
未定义的符号:
"_OBJC_CLASS_$_mapListViewController", 引用自:objc-class-ref-to-mapListViewController 在mapViewController中。o
"_OBJC_CLASS_$_mapParser", 引用自:mapViewController中的objc-class-ref-to-mapParser。o
"_OBJC_CLASS_$_mapTabViewController", 引用自:objc-class-ref-to-mapTabViewController 在mapViewController中。o
劳工处:符号未找到collect2:劳工处 返回1个退出状态
这就是我得到的确切错误消息。我没有从今天早上完全工作的版本中更改任何代码。有什么建议吗?MapViewController文件似乎是导致问题的原因,所以这里也是如此:
#import "mapViewController.h"
#import "locationDetailViewController.h"
#import "DPUAnnotation.h"
#import "mapParser.h"
#import "mapListViewController.h"
#import "mapTabViewController.h"
@implementation mapViewController
@synthesize locationManager, mapView, mapAnnotations, mParser, mapListView, tabView;
@class DPUAnnotation;
+ (CGFloat)annotationPadding;
{
return 10.0f;
}
+ (CGFloat)calloutHeight;
{
return 40.0f;
}
- (void)gotoLocation
{
// start off by default at DePauw campus
MKCoordinateRegion newRegion;
newRegion.center.latitude = 39.639348;
newRegion.center.longitude = -86.861231;
newRegion.span.latitudeDelta = 0.006776;
newRegion.span.longitudeDelta = 0.006291;
[self.mapView setRegion:newRegion animated:YES];
}
- (void)viewDidLoad {
self.title = @"Map";
mapView.mapType = MKMapTypeHybrid;
mapView.showsUserLocation = YES;
mapListView = [[mapListViewController alloc] initWithNibName:@"mapListView" bundle:nil];
tabView = [[mapTabViewController alloc] initWithNibName:@"mapTabViewController" bundle:nil];
if (mapAnnotations == nil)
{
self.mapAnnotations = [NSMutableArray array];
}
else
{
[mapAnnotations removeAllObjects];
}
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"btn_home.png"] style:UIBarButtonItemStyleBordered target:self action:@selector(mainpageClicked)];
[self.navigationItem setLeftBarButtonItem:backButton];
UIBarButtonItem *mapListButton = [[UIBarButtonItem alloc] initWithTitle:@"Building List" style:UIBarButtonItemStylePlain target:self action:@selector(pushMapList)];
[self.navigationItem setRightBarButtonItem: mapListButton];
locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
[locationManager startUpdatingLocation];
[self gotoLocation];
self.mParser = [[[mapParser alloc] init] autorelease];
self.mParser.delegate = self;
[self.mParser start];
[super viewDidLoad];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:(BOOL)animated];
}
- (void)dealloc
{
[mapView release];
[locationManager release];
[mapAnnotations release];
[super dealloc];
}
/*
* Returns the User to the main Application Page
*/
- (IBAction)mainpageClicked
{
NSLog(@"Return To Main page Clicked");
[self.parentViewController dismissModalViewControllerAnimated:YES];
[self.navigationController release];
}
- (IBAction) pushMapList
{
tabView = [[mapTabViewController alloc] initWithNibName:@"mapTabViewController" bundle:nil];
tabView.mapAnnotations2 = mapAnnotations;
[self.navigationController pushViewController:tabView animated:YES];
[tabView release];
}
- (IBAction)addAnnotation
{
[self.mapView removeAnnotations:self.mapView.annotations];
for (int i = 0; i < [mapAnnotations count]; i++)
[mapView addAnnotation:[mapAnnotations objectAtIndex:i]];
NSLog(@"BLAH BLAH BLAH PLEASE PRINT");
if([mapAnnotations count] == 0)
NSLog(@"array is empty");
}
- (void)showDetails:(id)sender
{
NSInteger selectedIndex = [sender tag];
DPUAnnotation *selectedObject = [mapAnnotations objectAtIndex:selectedIndex];
[self.navigationController setToolbarHidden:YES animated:NO];
NSURL *url = [NSURL URLWithString: selectedObject.url];
locationDetailViewController *locationDetailView;
locationDetailView = [[locationDetailViewController alloc] initWithNibName:@"mapDetailView" bundle:nil];
[self.navigationController pushViewController:locationDetailView animated:YES];
[locationDetailView.webView loadRequest: [NSURLRequest requestWithURL:url]];
[locationDetailView release];
[selectedObject release];
}
- (MKAnnotationView *)mapView:(MKMapView *)theMapView viewForAnnotation:(id <MKAnnotation>)annotation
{
// if it's the user location, just return nil.
if ([annotation isKindOfClass:[MKUserLocation class]])
return nil;
if([[annotation subtitle] isEqualToString:@"Academic"])
{
// try to dequeue an existing pin view first
static NSString* annotationIdentifier = @"annotationIdentifier";
MKPinAnnotationView* pinView = (MKPinAnnotationView *)[theMapView dequeueReusableAnnotationViewWithIdentifier:annotationIdentifier];
if (!pinView)
{
MKAnnotationView *annotationView = [[[MKAnnotationView alloc] initWithAnnotation:annotation
reuseIdentifier:annotationIdentifier] autorelease];
annotationView.canShowCallout = YES;
UIImage *academicImage = [UIImage imageNamed:@"academic.png"];
CGRect resizeRect;
resizeRect.size = academicImage.size;
CGSize maxSize = CGRectInset(self.view.bounds,
[mapViewController annotationPadding],
[mapViewController annotationPadding]).size;
maxSize.height -= self.navigationController.navigationBar.frame.size.height + [mapViewController calloutHeight];
if (resizeRect.size.width > maxSize.width)
resizeRect.size = CGSizeMake(maxSize.width, resizeRect.size.height / resizeRect.size.width * maxSize.width);
if (resizeRect.size.height > maxSize.height)
resizeRect.size = CGSizeMake(resizeRect.size.width / resizeRect.size.height * maxSize.height, maxSize.height);
resizeRect.origin = (CGPoint){0.0f, 0.0f};
UIGraphicsBeginImageContext(resizeRect.size);
[academicImage drawInRect:resizeRect];
UIImage *resizedImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
annotationView.image = resizedImage;
annotationView.opaque = NO;
UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
NSInteger annotationValue = [self.mapAnnotations indexOfObject:annotation];
rightButton.tag = annotationValue;
[rightButton addTarget:self action:@selector(showDetails:) forControlEvents:UIControlEventTouchUpInside];
annotationView.rightCalloutAccessoryView = rightButton;
return annotationView;
}
else
{
pinView.annotation = annotation;
}
return pinView;
}
else if([[annotation subtitle] isEqualToString:@"Administrative"])
{
// try to dequeue an existing pin view first
static NSString* annotationIdentifier = @"annotationIdentifier";
MKPinAnnotationView* pinView = (MKPinAnnotationView *)[theMapView dequeueReusableAnnotationViewWithIdentifier:annotationIdentifier];
if (!pinView)
{
MKAnnotationView *annotationView = [[[MKAnnotationView alloc] initWithAnnotation:annotation
reuseIdentifier:annotationIdentifier] autorelease];
annotationView.canShowCallout = YES;
UIImage *administrativeImage = [UIImage imageNamed:@"administrative.png"];
CGRect resizeRect;
resizeRect.size = administrativeImage.size;
CGSize maxSize = CGRectInset(self.view.bounds,
[mapViewController annotationPadding],
[mapViewController annotationPadding]).size;
maxSize.height -= self.navigationController.navigationBar.frame.size.height + [mapViewController calloutHeight];
if (resizeRect.size.width > maxSize.width)
resizeRect.size = CGSizeMake(maxSize.width, resizeRect.size.height / resizeRect.size.width * maxSize.width);
if (resizeRect.size.height > maxSize.height)
resizeRect.size = CGSizeMake(resizeRect.size.width / resizeRect.size.height * maxSize.height, maxSize.height);
resizeRect.origin = (CGPoint){0.0f, 0.0f};
UIGraphicsBeginImageContext(resizeRect.size);
[administrativeImage drawInRect:resizeRect];
UIImage *resizedImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
annotationView.image = resizedImage;
annotationView.opaque = NO;
UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
NSInteger annotationValue = [self.mapAnnotations indexOfObject:annotation];
rightButton.tag = annotationValue;
[rightButton addTarget:self action:@selector(showDetails:) forControlEvents:UIControlEventTouchUpInside];
annotationView.rightCalloutAccessoryView = rightButton;
return annotationView;
}
else
{
pinView.annotation = annotation;
}
return pinView;
}
else if([[annotation subtitle] isEqualToString:@"University Housing"] || [[annotation subtitle] isEqualToString:@"Residence Halls"] || [[annotation subtitle] isEqualToString:@"University Duplexes"] || [[annotation subtitle] isEqualToString:@"Greek Housing"])
{
// try to dequeue an existing pin view first
static NSString* annotationIdentifier = @"annotationIdentifier";
MKPinAnnotationView* pinView = (MKPinAnnotationView *)[theMapView dequeueReusableAnnotationViewWithIdentifier:annotationIdentifier];
if (!pinView)
{
MKAnnotationView *annotationView = [[[MKAnnotationView alloc] initWithAnnotation:annotation
reuseIdentifier:annotationIdentifier] autorelease];
annotationView.canShowCallout = YES;
UIImage *housingImage = [UIImage imageNamed:@"housing.png"];
CGRect resizeRect;
resizeRect.size = housingImage.size;
CGSize maxSize = CGRectInset(self.view.bounds,
[mapViewController annotationPadding],
[mapViewController annotationPadding]).size;
maxSize.height -= self.navigationController.navigationBar.frame.size.height + [mapViewController calloutHeight];
if (resizeRect.size.width > maxSize.width)
resizeRect.size = CGSizeMake(maxSize.width, resizeRect.size.height / resizeRect.size.width * maxSize.width);
if (resizeRect.size.height > maxSize.height)
resizeRect.size = CGSizeMake(resizeRect.size.width / resizeRect.size.height * maxSize.height, maxSize.height);
resizeRect.origin = (CGPoint){0.0f, 0.0f};
UIGraphicsBeginImageContext(resizeRect.size);
[housingImage drawInRect:resizeRect];
UIImage *resizedImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
annotationView.image = resizedImage;
annotationView.opaque = NO;
UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
NSInteger annotationValue = [self.mapAnnotations indexOfObject:annotation];
rightButton.tag = annotationValue;
[rightButton addTarget:self action:@selector(showDetails:) forControlEvents:UIControlEventTouchUpInside];
annotationView.rightCalloutAccessoryView = rightButton;
return annotationView;
}
else
{
pinView.annotation = annotation;
}
return pinView;
}
else if([[annotation subtitle] isEqualToString:@"Other"])
{
// try to dequeue an existing pin view first
static NSString* annotationIdentifier = @"annotationIdentifier";
MKPinAnnotationView* pinView = (MKPinAnnotationView *)[theMapView dequeueReusableAnnotationViewWithIdentifier:annotationIdentifier];
if (!pinView)
{
MKAnnotationView *annotationView = [[[MKAnnotationView alloc] initWithAnnotation:annotation
reuseIdentifier:annotationIdentifier] autorelease];
annotationView.canShowCallout = YES;
UIImage *otherImage = [UIImage imageNamed:@"other.png"];
CGRect resizeRect;
resizeRect.size = otherImage.size;
CGSize maxSize = CGRectInset(self.view.bounds,
[mapViewController annotationPadding],
[mapViewController annotationPadding]).size;
maxSize.height -= self.navigationController.navigationBar.frame.size.height + [mapViewController calloutHeight];
if (resizeRect.size.width > maxSize.width)
resizeRect.size = CGSizeMake(maxSize.width, resizeRect.size.height / resizeRect.size.width * maxSize.width);
if (resizeRect.size.height > maxSize.height)
resizeRect.size = CGSizeMake(resizeRect.size.width / resizeRect.size.height * maxSize.height, maxSize.height);
resizeRect.origin = (CGPoint){0.0f, 0.0f};
UIGraphicsBeginImageContext(resizeRect.size);
[otherImage drawInRect:resizeRect];
UIImage *resizedImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
annotationView.image = resizedImage;
annotationView.opaque = NO;
UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
NSInteger annotationValue = [self.mapAnnotations indexOfObject:annotation];
rightButton.tag = annotationValue;
[rightButton addTarget:self action:@selector(showDetails:) forControlEvents:UIControlEventTouchUpInside];
annotationView.rightCalloutAccessoryView = rightButton;
return annotationView;
}
else
{
pinView.annotation = annotation;
}
return pinView;
}
else if([[annotation subtitle] isEqualToString:@"Fields"])
{
// try to dequeue an existing pin view first
static NSString* annotationIdentifier = @"annotationIdentifier";
MKPinAnnotationView* pinView = (MKPinAnnotationView *)[theMapView dequeueReusableAnnotationViewWithIdentifier:annotationIdentifier];
if (!pinView)
{
MKAnnotationView *annotationView = [[[MKAnnotationView alloc] initWithAnnotation:annotation
reuseIdentifier:annotationIdentifier] autorelease];
annotationView.canShowCallout = YES;
UIImage *athleticsImage = [UIImage imageNamed:@"athletics.png"];
CGRect resizeRect;
resizeRect.size = athleticsImage.size;
CGSize maxSize = CGRectInset(self.view.bounds,
[mapViewController annotationPadding],
[mapViewController annotationPadding]).size;
maxSize.height -= self.navigationController.navigationBar.frame.size.height + [mapViewController calloutHeight];
if (resizeRect.size.width > maxSize.width)
resizeRect.size = CGSizeMake(maxSize.width, resizeRect.size.height / resizeRect.size.width * maxSize.width);
if (resizeRect.size.height > maxSize.height)
resizeRect.size = CGSizeMake(resizeRect.size.width / resizeRect.size.height * maxSize.height, maxSize.height);
resizeRect.origin = (CGPoint){0.0f, 0.0f};
UIGraphicsBeginImageContext(resizeRect.size);
[athleticsImage drawInRect:resizeRect];
UIImage *resizedImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
annotationView.image = resizedImage;
annotationView.opaque = NO;
UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
NSInteger annotationValue = [self.mapAnnotations indexOfObject:annotation];
rightButton.tag = annotationValue;
[rightButton addTarget:self action:@selector(showDetails:) forControlEvents:UIControlEventTouchUpInside];
annotationView.rightCalloutAccessoryView = rightButton;
return annotationView;
}
else
{
pinView.annotation = annotation;
}
return pinView;
}
else if([[annotation subtitle] isEqualToString:@"Landmarks"])
{
// try to dequeue an existing pin view first
static NSString* annotationIdentifier = @"annotationIdentifier";
MKPinAnnotationView* pinView = (MKPinAnnotationView *)[theMapView dequeueReusableAnnotationViewWithIdentifier:annotationIdentifier];
if (!pinView)
{
MKAnnotationView *annotationView = [[[MKAnnotationView alloc] initWithAnnotation:annotation
reuseIdentifier:annotationIdentifier] autorelease];
annotationView.canShowCallout = YES;
UIImage *landmarkImage = [UIImage imageNamed:@"landmark.png"];
CGRect resizeRect;
resizeRect.size = landmarkImage.size;
CGSize maxSize = CGRectInset(self.view.bounds,
[mapViewController annotationPadding],
[mapViewController annotationPadding]).size;
maxSize.height -= self.navigationController.navigationBar.frame.size.height + [mapViewController calloutHeight];
if (resizeRect.size.width > maxSize.width)
resizeRect.size = CGSizeMake(maxSize.width, resizeRect.size.height / resizeRect.size.width * maxSize.width);
if (resizeRect.size.height > maxSize.height)
resizeRect.size = CGSizeMake(resizeRect.size.width / resizeRect.size.height * maxSize.height, maxSize.height);
resizeRect.origin = (CGPoint){0.0f, 0.0f};
UIGraphicsBeginImageContext(resizeRect.size);
[landmarkImage drawInRect:resizeRect];
UIImage *resizedImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
annotationView.image = resizedImage;
annotationView.opaque = NO;
UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
NSInteger annotationValue = [self.mapAnnotations indexOfObject:annotation];
rightButton.tag = annotationValue;
[rightButton addTarget:self action:@selector(showDetails:) forControlEvents:UIControlEventTouchUpInside];
annotationView.rightCalloutAccessoryView = rightButton;
return annotationView;
}
else
{
pinView.annotation = annotation;
}
return pinView;
}
return nil;
}
#pragma mark <mapParser> Implementation
- (void)parser:(NSXMLParser *)parser didFailWithError:(NSError *)parseError {
}
- (void)parserDidEndParsingData:(mapParser *)parser
{
[self addAnnotation];
tabView.mapAnnotations2 = mapAnnotations;
self.mParser = nil;
[mParser release];
}
- (void)parser:(mapParser *)parser didParseItem:(NSArray *)parsedItem
{
NSLog(@"Did Parse Map Item");
[self.mapAnnotations addObjectsFromArray:parsedItem];
}
- (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFailWithError:(NSError *)error {}
- (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFindPlacemark:(MKPlacemark *)placemark {}
@end
解决方案
项目文件中很可能缺少这三个类。检查XCode项目中的Classes组以查看是否存在这三个文件。如果没有,则右键单击"类"组,然后单击"添加">"现有文件"以添加它们。
如果文件被添加到项目中,则确保实现(。m)这些缺失类的文件被添加到已编译的源中。若要检查,请展开组 Targets > your application target > Compile Sources
, ,并查看文件是否存在。如果没有,请右键单击"编译源",然后转到 Add > Existing Files
来添加它们。另一种可能更快的方法是选择。每个缺失类的m个文件,并查看最右边的公牛眼复选框是否被选中。如果没有,那么检查它,它会自动添加到编译源。
其他提示
“_ objc_class _ $ _ maplistviewcontroller”,引用来自: objc-class-ref-to-maplistviewcontroller在mapViewController.o
“_ objc_class _ $ _ mapparser”,引用来自: MapViewController中的objc-class-ref-to-mapparser.o
“_ objc_class _ $ _ maptabviewcontroller”,引用来自: MapViewController中的Objc-class-ref-to-maptabviewcontroller.o
ld:符号未找到collect2:ld返回1退出状态
确保所有(maplistviewcontroller,mapparser,maptabviewcontroller)都有@Interface&@implementation
解决我的问题。我碰巧错过了外观@implementation缺少
我正在具有相同的问题,我通过将框架添加到Xcode 中来解决
添加CoreGraphics Libraray时。您需要选择project_name-> targets / select projects名称(不选择项目测试名称,它是错误的,您面临错误) - > buildsetting->和添加coreLocation.framework