我有以下问题。我继承了一个应用程序，我正在尝试修改它。原始功能允许我添加带有一些文本注释的任务。我想添加一个图标，使其更具视觉吸引力。当我修改代码签名以传递图标时（实际上我只传递NSString中图标的名称）模块停止工作，应用程序抛出以下错误，基本上是一个无法识别的选择器：
2011-03-19 22:41:17.713 app[82653:207] -[RemindersDataManager addReminder:notes:locations:icon:]: unrecognized selector sent to instance 0xc700bc0
2011-03-19 22:41:17.716 app[82653:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[RemindersDataManager addReminder:notes:locations:icon:]: unrecognized selector sent to instance 0xc700bc0'
*** Call stack at first throw:
(
0 CoreFoundation 0x0162abe9 __exceptionPreprocess + 185
1 libobjc.A.dylib 0x0177f5c2 objc_exception_throw + 47
2 CoreFoundation 0x0162c6fb -[NSObject(NSObject) doesNotRecognizeSelector:] + 187
3 CoreFoundation 0x0159c366 ___forwarding___ + 966
4 CoreFoundation 0x0159bf22 _CF_forwarding_prep_0 + 50
5 app 0x000158b1 -[GeoRemindersManager addReminder:notes:locations:icon:] + 121
6 app 0x0000f268 -[AddReminderViewController addReminder] + 655
7 UIKit 0x0053ea6e -[UIApplication sendAction:to:from:forEvent:] + 119
8 UIKit 0x005cd1b5 -[UIControl sendAction:to:forEvent:] + 67
9 UIKit 0x005cf647 -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 527
10 UIKit 0x005ce1f4 -[UIControl touchesEnded:withEvent:] + 458
11 UIKit 0x007c9987 _UIGestureRecognizerSortAndSendDelayedTouches + 3609
12 UIKit 0x007ca0fc _UIGestureRecognizerUpdateObserver + 927
13 CoreFoundation 0x0160bfbb __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 27
14 CoreFoundation 0x015a10e7 __CFRunLoopDoObservers + 295
15 CoreFoundation 0x01569bd7 __CFRunLoopRun + 1575
16 CoreFoundation 0x01569240 CFRunLoopRunSpecific + 208
17 CoreFoundation 0x01569161 CFRunLoopRunInMode + 97
18 GraphicsServices 0x01ce4268 GSEventRunModal + 217
19 GraphicsServices 0x01ce432d GSEventRun + 115
20 UIKit 0x0054d42e UIApplicationMain + 1160
21 app 0x00002d1c main + 102
22 app 0x00002cad start + 53
)
terminate called after throwing an instance of 'NSException'.
这些是原始模块的签名
AddReminderViewController.h
// user actions
- (IBAction)addReminder;
AddReminderViewController.m
- (IBAction)addReminder {
if ([self dataVerification]) {
BOOL result = NO;
// try to add one geo fence or several geo fences
if (self.address) {
result = [[GeoRemindersManager sharedInstance] addReminder:self.titleField.text notes:self.detailsField.text
coordinate:self.coordinate address:self.address];
}
else if (self.locations) {
result = [[GeoRemindersManager sharedInstance] addReminder:self.titleField.text notes:self.detailsField.text locations:self.locations];
}
// successfully added - close
if (result) {
[self.navigationController popToRootViewControllerAnimated:YES];
}
GeoRemindersManager.h
// shared instance
+ (GeoRemindersManager *)sharedInstance;
// workflow
- (void)start;
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes
coordinate:(CLLocationCoordinate2D)coordinate address:(NSString *)address;
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes location:(LocationEntity *)location;
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes locations:(NSArray *)locations;
- (void)changeReminder:(NSString *)title title:(NSString *)newTitle notes:(NSString *)newNotes;
- (void)removeReminder:(NSString *)title;
- (ReminderEntity *)getReminderWithTitle:(NSString *)title;
- (NSArray *)getLoctionsWithCoordinate:(CLLocationCoordinate2D)coordinate;
- (void)wakeByLocalNotification:(NSDictionary *)info;
- (void)memoryWarning;
- (CLLocation *)getCurrentLocation;
// extra
- (BOOL)checkReminderExistance:(NSString *)title;
- (void)updateDelegatesWithReminder:(NSString *)title notes:(NSString *)notes;
GeoRemindersManager.m
+ (GeoRemindersManager *)sharedInstance {
geoapp_iphoneAppDelegate *appDelegate = (geoapp_iphoneAppDelegate *)[MLSApplication instance];
return appDelegate.remindersManager;
}
#pragma mark -
#pragma mark workflow
- (void)start {
// start first locating
[deviceLocation forceStart];
// add geo fences to device location
NSArray *locations = [geoDataManager getAllRemindersLocations];
[deviceLocation addMonitoringLocations:locations];
// invoke delegate
[delegateMap didAddMonitoringLocations:locations];
}
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes
coordinate:(CLLocationCoordinate2D)coordinate address:(NSString *)address
{
if (![self checkReminderExistance:title]) {
return NO;
}
// all verifications are OK, adding reminder
[geoDataManager addReminder:title notes:notes coordinate:coordinate address:address];
[self updateDelegatesWithReminder:title notes:notes];
return YES;
}
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes location:(LocationEntity *)location {
return [self addReminder:title notes:notes locations:[NSArray arrayWithObject:location]];
}
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes locations:(NSArray *)locations {
if (![self checkReminderExistance:title]) {
return NO;
}
// all verifications are OK, adding reminder
[geoDataManager addReminder:title notes:notes locations:locations];
[self updateDelegatesWithReminder:title notes:notes];
return YES;
}
和修改过的：
AddReminderViewController.m
- (IBAction)addReminder {
if ([self dataVerification]) {
BOOL result = NO;
// try to add one geo fence or several geo fences
if (self.address) {
result = [[GeoRemindersManager sharedInstance] addReminder:self.titleField.text notes:self.detailsField.text coordinate:self.coordinate address:self.address icon:(NSString *)iconButton.currentTitle];
}
else if (self.locations) {
result = [[GeoRemindersManager sharedInstance] addReminder:self.titleField.text notes:self.detailsField.text locations:self.locations icon:(NSString *)iconButton.currentTitle];
}
// successfully added - close
if (result) {
[self.navigationController popToRootViewControllerAnimated:YES];
}
}
}
GeoRemindersManager.h
// shared instance
+ (GeoRemindersManager *)sharedInstance;
// workflow
- (void)start;
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes
coordinate:(CLLocationCoordinate2D)coordinate address:(NSString *)address icon:(NSString *)icon;
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes location:(LocationEntity *)location icon:(NSString *)icon;
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes locations:(NSArray *)locations icon:(NSString *)icon;
- (void)changeReminder:(NSString *)title title:(NSString *)newTitle notes:(NSString *)newNotes icon:(NSString *)icon;
- (void)removeReminder:(NSString *)title;
- (ReminderEntity *)getReminderWithTitle:(NSString *)title;
- (NSArray *)getLoctionsWithCoordinate:(CLLocationCoordinate2D)coordinate;
- (void)wakeByLocalNotification:(NSDictionary *)info;
- (void)memoryWarning;
- (CLLocation *)getCurrentLocation;
// extra
- (BOOL)checkReminderExistance:(NSString *)title;
- (void)updateDelegatesWithReminder:(NSString *)title notes:(NSString *)notes icon:(NSString *)icon;
GeoRemindersManager.m
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes
coordinate:(CLLocationCoordinate2D)coordinate address:(NSString *)address icon:(NSString *)icon
{
if (![self checkReminderExistance:title]) {
return NO;
}
// all verifications are OK, adding reminder
[geoDataManager addReminder:title notes:notes coordinate:coordinate address:address icon:icon];
[self updateDelegatesWithReminder:title notes:notes icon:icon];
return YES;
}
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes location:(LocationEntity *)location icon:(NSString *)icon{
return [self addReminder:title notes:notes locations:[NSArray arrayWithObject:location icon:icon]];
}
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes locations:(NSArray *)locations icon:(NSString *)icon {
if (![self checkReminderExistance:title]) {
return NO;
}
// all verifications are OK, adding reminder
[geoDataManager addReminder:title notes:notes locations:locations icon:icon];
[self updateDelegatesWithReminder:title notes:notes];
return YES;
}
所以简而言之，我添加的唯一内容是将这些函数作为NSString的图标名称的附加参数...任何线索？所有帮助非常感谢！感谢
答案 0 :(得分：3)
错误消息表明在RemindersDataManager类的对象上调用了无法识别的选择器，可能来自行
[geoDataManager addReminder:title notes:notes locations:locations icon:icon];
你应该找到该类的实现，并将你的icon参数添加到它的方法中（或者如果它没有用于图标，则停止向其传递图标）。