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試過編譯並運行這個程序，但在控制檯收到此錯誤信息：線程1：信號「SIGABRT」錯誤信息
2012-02-23 11:43:53.949 touches_v3[8667:f803] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<ViewController 0x6aab1e0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key buttonShrink.'
*** First throw call stack:
(0x13bc052 0x154dd0a 0x13bbf11 0x9b3032 0x924f7b 0x924eeb 0x93fd60 0x23291a 0x13bde1a 0x1327821 0x23146e 0xd8e2c 0xd93a9 0xd95cb 0x39a73 0x39ce2 0x39ea8 0x40d9a 0x1f3b 0x119d6 0x128a6 0x21743 0x221f8 0x15aa9 0x12a6fa9 0x13901c5 0x12f5022 0x12f390a 0x12f2db4 0x12f2ccb 0x122a7 0x13a9b 0x1c42 0x1bb5)
terminate called throwing an exception(lldb)
這沒有意義，我因爲當我做代碼「buttonShrink」作爲頭文件中的對象，之後我將其刪除，並在實現文件中刪除對它的所有引用。頭文件或實現文件中沒有錯誤或警告。
這是這兩個代碼。 頭文件：
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController {
IBOutlet UIImageView *myIcon;
IBOutlet UIImageView *myBackground;
IBOutlet UIButton *shrinkButton;
NSArray *bgImages;
int currentBackground;
bool hasMoved;
bool hasShrunk;
CGAffineTransform translate;
CGAffineTransform size;
UIButton *move;
}
@property (nonatomic, retain)UIImageView *myIcon;
@property (nonatomic, retain)UIImageView *myBackground;
@property (nonatomic, retain)NSArray *bgImages;
@property (nonatomic, retain)UIButton *shrinkButton;
- (IBAction)shrink:(id)sender;
- (IBAction)move:(id)sender;
- (IBAction)change:(id)sender;
@end
實現文件：
#import "ViewController.h"
@interface ViewController()
@end
@implementation ViewController
@synthesize myIcon, myBackground, bgImages, shrinkButton;
- (void)viewDidLoad
{
[super viewDidLoad];
hasMoved = NO;
hasShrunk = NO;
currentBackground = 0;
bgImages = [[NSArray alloc] initWithObjects:
[UIImage imageNamed:@"wallPaper_01.png"],
[UIImage imageNamed:@"wallPaper_02.png"],
[UIImage imageNamed:@"wallPaper_03.png"],
[UIImage imageNamed:@"wallPaper_04.png"],
[UIImage imageNamed:@"wallPaper_05.png"],
nil];
size = CGAffineTransformMakeScale(.25, .25);
translate = CGAffineTransformMakeTranslation(0, -100);
myBackground.image = [bgImages objectAtIndex:currentBackground];
}
- (void)viewDidUnload
{
[super viewDidUnload];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
- (void)dealloc {
[myIcon release];
[myBackground release];
[shrinkButton release];
[super dealloc];
}
- (void) touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [[event allTouches] anyObject];
if (CGRectContainsPoint([myIcon frame], [touch locationInView:nil]))
{
if(hasMoved == YES && hasShrunk == YES) {
myIcon.transform = CGAffineTransformTranslate(size, 0, 0);
hasMoved = 0;
}
if(hasMoved == YES && hasShrunk == NO) {
myIcon.transform = CGAffineTransformMakeTranslation(0, 0);
hasMoved = NO;
}
myIcon.center = [touch locationInView:nil];
}
}
- (IBAction)shrink:(id)sender {
if (hasShrunk) {
[shrinkButton setTitle:@"Shrink" forState:UIControlStateNormal];
} else {
[shrinkButton setTitle:@"Grow" forState:UIControlStateNormal];
}
if (hasShrunk == NO && hasMoved == NO) {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1.0];
myIcon.transform = size;
[UIView commitAnimations];
hasShrunk = YES;
}
else if (hasShrunk == NO && hasMoved == YES) {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1.0];
myIcon.transform = CGAffineTransformScale(translate, .25, .25);
[UIView commitAnimations];
hasShrunk = YES;
}
else if (hasShrunk == YES && hasMoved == YES) {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1.0];
myIcon.transform = CGAffineTransformScale(translate, 1, 1);
[UIView commitAnimations];
hasShrunk = YES;
}
if (hasShrunk == NO && hasMoved == NO) {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1.0];
myIcon.transform = CGAffineTransformIdentity;
[UIView commitAnimations];
hasShrunk = YES;
}
}
- (IBAction)move:(id)sender {
if (hasMoved == NO && hasShrunk == NO) {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1.0];
myIcon.transform = translate;
[UIView commitAnimations];
hasMoved = YES;
}
else if (hasMoved == NO && hasShrunk == YES) {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1.0];
myIcon.transform = CGAffineTransformTranslate(size, 0, -100);
[UIView commitAnimations];
hasMoved = YES;
}
else if (hasMoved == YES && hasShrunk == YES) {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1.0];
myIcon.transform = CGAffineTransformTranslate(size, 0, 0);
[UIView commitAnimations];
hasMoved = YES;
}
if (hasMoved == NO && hasShrunk == NO) {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1.0];
myIcon.transform = CGAffineTransformMakeTranslation(0,0);
[UIView commitAnimations];
hasMoved = YES;
}
}
- (IBAction)change:(id)sender {
currentBackground++;
if (currentBackground >=[bgImages count])
currentBackground = 0;
[UIView beginAnimations:@"changeView" context:nil];
[UIView setAnimationDuration:1];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
if (currentBackground == 1) {
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:self.view cache:YES];
}
if (currentBackground == 2) {
[UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:self.view cache:YES];
}
if (currentBackground == 3) {
[UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.view cache:YES];
}
if (currentBackground == 4) {
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:self.view cache:YES];
}
[UIView commitAnimations];
myBackground.image = [bgImages objectAtIndex:currentBackground];
}
@end
是的，發現問題。我有一個懸掛的插座。一旦我刪除了它，它編譯得很好。謝謝。 – pdenlinger 2012-02-23 20:40:28