此代码前 3 次都有效,每次都没有失败,但它在第 4 次运行时崩溃,并出现线程 1:EXC_BAD_ACCESS(code=1,address=0x4)
。研究了一下午,没有任何结果,是不是我没有发布东西?
- (void)animateImageView:(UIImageView *)imageViewForAnimation
{
imageViewForAnimation.alpha = 1.0f;
CGRect imageFrame = imageViewForAnimation.frame;
//Your image frame.origin from where the animation need to get start
CGPoint viewOrigin = imageViewForAnimation.frame.origin;
viewOrigin.y = viewOrigin.y + imageFrame.size.height / 2.0f;
viewOrigin.x = viewOrigin.x + imageFrame.size.width / 2.0f;
imageViewForAnimation.frame = imageFrame;
imageViewForAnimation.layer.position = viewOrigin;
[self.view addSubview:imageViewForAnimation];
// Set up fade out effect
CABasicAnimation *fadeOutAnimation = [CABasicAnimation animationWithKeyPath:@"opacity"];
[fadeOutAnimation setToValue:[NSNumber numberWithFloat:0.3]];
fadeOutAnimation.fillMode = kCAFillModeForwards;
fadeOutAnimation.removedOnCompletion = NO;
// Set up scaling
CABasicAnimation *resizeAnimation = [CABasicAnimation animationWithKeyPath:@"bounds.size"];
[resizeAnimation setToValue:[NSValue valueWithCGSize:CGSizeMake(40.0f, imageFrame.size.height * (40.0f / imageFrame.size.width))]];
resizeAnimation.fillMode = kCAFillModeForwards;
resizeAnimation.removedOnCompletion = NO;
// Set up path movement
CAKeyframeAnimation *pathAnimation = [CAKeyframeAnimation animationWithKeyPath:@"position"];
pathAnimation.calculationMode = kCAAnimationPaced;
pathAnimation.fillMode = kCAFillModeForwards;
pathAnimation.removedOnCompletion = NO;
//Setting Endpoint of the animation
CGPoint endPoint = CGPointMake(250.0f, 10.0f);
//to end animation in last tab use
//CGPoint endPoint = CGPointMake( 320-40.0f, 480.0f);
CGMutablePathRef curvedPath = CGPathCreateMutable();
CGPathMoveToPoint(curvedPath, NULL, viewOrigin.x, viewOrigin.y);
CGPathAddCurveToPoint(curvedPath, NULL, endPoint.x, viewOrigin.y, endPoint.x, viewOrigin.y, endPoint.x, endPoint.y);
pathAnimation.path = curvedPath;
CGPathRelease(curvedPath);
CAAnimationGroup *group = [CAAnimationGroup animation];
group.fillMode = kCAFillModeForwards;
group.removedOnCompletion = NO;
[group setAnimations:[NSArray arrayWithObjects:fadeOutAnimation, pathAnimation, resizeAnimation, nil]];
group.duration = 0.7f;
group.delegate = self;
//[group setValue:@"groupAnimation" forKey:@"animationName"];
[group setValue:imageViewForAnimation forKey:@"imageViewBeingAnimated"];
[imageViewForAnimation.layer addAnimation:group forKey:@"savingAnimation"];
[imageViewForAnimation release];
}
最佳答案
删除版本。 我的建议有效,因为对象 imageViewForAnimation 是您的方法的参数,并且您的方法中没有任何内容向该对象添加保留。因此,imageViewForAnimation 对象的保留计数不必要地减少是有道理的。仅在保留时才释放。将它们保持在同一范围内。
更好的是,使用 ARC ARC,您只需转到 Xcode 中的菜单栏,编辑 > 重构 > 转换为 Objective-C ARC...然后仔细遵循。它将删除 Obj-C 内容中的保留和释放。
关于iPhone/xCode - 第四次运行动画代码时的 EXC_BAD_ACCESS,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/24546298/