我是一名初学者程序员,正在开发iPhone应用程序。我想知道是否有人能帮我解决我的应用程序中的一个错误。在使用XCode编程时,我发现在添加了更多的代码后,我的应用程序突然在启动时崩溃了。输出面板显示以下错误:
* Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key play.' * First throw call stack: (0x1c91012 0x10cee7e 0x1d19fb1 0xb7ae41 0xafc5f8 0xafc0e7 0xb26b58 0x230019 0x10e2663 0x1c8c45a 0x22eb1c 0xf37e7 0xf3dc8 0xf3ff8 0xf4232 0x433d5 0x4376f 0x43905 0x8eceab6 0x4c917 0x1096c 0x1194b 0x22cb5 0x23beb 0x15698 0x1becdf9 0x1becad0 0x1c06bf5 0x1c06962 0x1c37bb6 0x1c36f44 0x1c36e1b 0x1117a 0x12ffc 0x222d 0x2155) libc++abi.dylib: terminate called throwing an exception (lldb)
应用程序终止时出现的代码如下:
#import <UIKit/UIKit.h>
#import "CIAAppDelegate.h"
int main(int argc, char *argv[])
{
@autoreleasepool {
return UIApplicationMain(argc, argv, nil, NSStringFromClass([CIAAppDelegate class]));
}
}
我的 ViewController.h 显示:
#import <UIKit/UIKit.h>
@interface CIAViewController : UIViewController {
IBOutlet UILabel *cruzia;
IBOutlet UILabel *textarea;
IBOutlet UIButton *playbtn;
IBOutlet UIButton *tutorialbtn;
IBOutlet UIButton *optionsbtn;
IBOutlet UIButton *trainingbtn;
IBOutlet UIButton *back;
}
-(IBAction)press;
-(IBAction)press2;
-(IBAction)press3;
-(IBAction)press4;
-(IBAction)press5;
还有我的ViewController.m展示
#import "CIAViewController.h"
@interface CIAViewController ()
@end
@implementation CIAViewController
-(IBAction)press {
cruzia.hidden = 0;
textarea.hidden = 0;
playbtn.hidden = 1;
tutorialbtn.hidden = 1;
optionsbtn.hidden = 1;
trainingbtn.hidden = 1;
back.hidden = 0;
cruzia.text = @"Play";
textarea.text = @"Hello! You are playing the game of Cruzia!";
}
-(IBAction)press2 {
cruzia.hidden = 0;
textarea.hidden = 0;
playbtn.hidden = 1;
tutorialbtn.hidden = 1;
optionsbtn.hidden = 1;
trainingbtn.hidden = 1;
back.hidden = 0;
cruzia.text = @"Tutorial";
textarea.text = @"Welcome! You are watching the Cruzia tutorial!";
}
-(IBAction)press3 {
cruzia.hidden = 0;
textarea.hidden = 0;
playbtn.hidden = 1;
tutorialbtn.hidden = 1;
optionsbtn.hidden = 1;
trainingbtn.hidden = 1;
back.hidden = 0;
cruzia.text = @"Options";
textarea.text = @"You are now in the Options screen. You can edit the settings of the game!";
}
-(IBAction)press4 {
cruzia.hidden = 0;
textarea.hidden = 0;
playbtn.hidden = 1;
tutorialbtn.hidden = 1;
optionsbtn.hidden = 1;
trainingbtn.hidden = 1;
back.hidden = 0;
cruzia.text = @"Training";
textarea.text = @"This is the training area. You can improve your Cruzia skills here!";
}
-(IBAction)press5 {
cruzia.hidden = 0;
textarea.hidden = 0;
playbtn.hidden = 0;
tutorialbtn.hidden = 0;
optionsbtn.hidden = 0;
trainingbtn.hidden = 0;
back.hidden = 1;
cruzia.text = @"Cruzia";
}
- (void)viewDidLoad
{
textarea.hidden = 1;
playbtn.hidden = 0;
tutorialbtn.hidden = 0;
optionsbtn.hidden = 0;
trainingbtn.hidden = 0;
back.hidden = 1;
cruzia.text = @"Cruzia";
[super viewDidLoad];
}
@end
很抱歉浪费您的时间,但我遇到这个错误已经有一段时间了,希望您能给出解决方案。