虽然工作的一个项目,我做了一个类我在另一个类实例没什么特别的,但如果我尝试调用这个例子中,我得到这个方法:广东话调用方法
终止,由于应用程序未捕获的异常 'NSInvalidArgumentException',原因是:“ - [CALayer的动画]:无法识别的选择发送到实例
这里是类.H:
#import <QuartzCore/QuartzCore.h>
@interface SFStripe : CALayer {
NSTimer *animation;
}
- (id)initWithXPosition:(NSInteger)positionX yPosition:(NSInteger)positionY;
- (id)initEndedWithXPosition:(NSInteger)positionX yPosition:(NSInteger)positionY;
- (void)animate;
- (void)reduceSize;
- (void)logSomething;
@property NSTimer *animation;
@end
这里的.M:
#import "SFStripe.h"
@implementation SFStripe
@synthesize animation;
- (id)initWithXPosition:(NSInteger)positionX yPosition:(NSInteger)positionY {
self = [CALayer layer];
self.backgroundColor = [UIColor blackColor].CGColor;
self.frame = CGRectMake(positionX, positionY, 5, 20);
self.cornerRadius = 5;
return self;
}
- (id)initEndedWithXPosition:(NSInteger)positionX yPosition:(NSInteger)positionY {
self = [CALayer layer];
self.backgroundColor = [UIColor grayColor].CGColor;
self.frame = CGRectMake(positionX, (positionY + 7.5), 5, 5);
self.cornerRadius = 2;
self.delegate = self;
return self;
}
- (void) logSomething {
NSLog(@"It did work!");
}
- (void)reduceSize {
if (self.frame.size.width > 0 && self.frame.size.height >= 5) {
self.frame = CGRectMake(self.frame.origin.x, (self.frame.origin.y - 0.5), self.frame.size.width, (self.frame.size.height - 0.5));
[self setNeedsDisplay];
NSLog(@"Width: %d", (int)self.frame.size.width);
NSLog(@"Height: %d", (int)self.frame.size.height);
} else {
self.backgroundColor = [UIColor grayColor].CGColor;
self.frame = CGRectMake(self.frame.origin.x, (self.frame.origin.y + 7.5), 5, 5);
[animation invalidate];
}
}
- (void)animate {
animation = [NSTimer scheduledTimerWithTimeInterval:0.03 target:self selector:@selector(reduceSize) userInfo:nil repeats:YES];
}
@end
我进口该类到一个新的项目只是为了看看它是否在那里工作,但得到了同样的错误。这里是我如何调用的类的实例的方法之一(我得到了所有的方法,同样的错误)
在mainview.h(清洁工程):
#import <UIKit/UIKit.h>
#import "SFStripe.h"
#import <QuartzCore/QuartzCore.h>
@interface STViewController : UIViewController {
SFStripe *stripe;
}
- (IBAction)animate:(id)sender;
@end
我创建的实例,并在的.mi让动作调用该实例的方法:
#import <QuartzCore/QuartzCore.h>
#import "STViewController.h"
#import "SFStripe.h"
@interface STViewController()
@end
@implementation STViewController
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
stripe = [[SFStripe alloc] initWithXPosition:30 yPosition:30];
[self.view.layer addSublayer:stripe];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)animate:(id)sender {
[stripe animate];
}
@end
对不起,所有的代码,但我不能找到这个问题,帮助,希望有人能帮助我一个答案!
我做了方法“logSomething”只是为了看看我的方法出了什么问题,但得到相同的错误! –
尝试合成“条纹”。此外,只需在'animate'方法 – user427969