组合动画CAAnimationGroup
2012-08-30 15:58
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先在自定义的ViewController里声明定义一个UIImageView
在viewDidLoad函数里添加图片,并执行组合动画
1 @property (nonatomic,retain) UIImageView *imgView;
1 @synthesize imgView;
在viewDidLoad函数里添加图片,并执行组合动画
1 //添加图片 2 imgView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Icon@2x.png"]]; 3 imgView.frame = CGRectMake(100, 100, imgView.frame.size.width, imgView.frame.size.height); 4 [self.view addSubview:imgView]; 5 [imgView release]; 6 7 //贝塞尔曲线路径 8 UIBezierPath *movePath = [UIBezierPath bezierPath]; 9 [movePath moveToPoint:CGPointMake(10.0, 10.0)]; 10 [movePath addQuadCurveToPoint:CGPointMake(100, 300) controlPoint:CGPointMake(300, 100)]; 11 12 //以下必须导入QuartzCore包 13 //关键帧动画(位置) 14 CAKeyframeAnimation * posAnim = [CAKeyframeAnimation animationWithKeyPath:@"position"]; 15 posAnim.path = movePath.CGPath; 16 posAnim.removedOnCompletion = YES; 17 18 //缩放动画 19 CABasicAnimation *scaleAnim = [CABasicAnimation animationWithKeyPath:@"transform"]; 20 scaleAnim.fromValue = [NSValue valueWithCATransform3D:CATransform3DIdentity]; 21 scaleAnim.toValue = [NSValue valueWithCATransform3D:CATransform3DMakeScale(0.1, 0.1, 1.0)]; 22 scaleAnim.removedOnCompletion = YES; 23 24 //透明动画 25 CABasicAnimation *opacityAnim = [CABasicAnimation animationWithKeyPath:@"alpha"]; 26 opacityAnim.fromValue = [NSNumber numberWithFloat:1.0]; 27 opacityAnim.toValue = [NSNumber numberWithFloat:0.1]; 28 opacityAnim.removedOnCompletion = YES; 29 30 //动画组 31 CAAnimationGroup *animGroup = [CAAnimationGroup animation]; 32 animGroup.animations = [NSArray arrayWithObjects:posAnim, scaleAnim, opacityAnim, nil]; 33 animGroup.duration = 1; 34 35 [imgView.layer addAnimation:animGroup forKey:nil];
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