模仿《百度音樂HD》添加到下載框動畫

上次聽有人說喜歡《百度音樂HD》添加到下載動畫 ，我就嘗試模仿了下，沒想到，今天code4app（地址）也有了這個，可是 這個動畫基本相同，咱們的思路仍是部同樣的。 均可以參考

。主要關鍵代碼是：

 

- (void)tranAction:(id)sender {
    
    CGPoint fromPoint = self.imageView.center;
    
    //路徑曲線
    UIBezierPath *movePath = [UIBezierPath bezierPath];
    [movePath moveToPoint:fromPoint];
    CGPoint toPoint = CGPointMake(20, 570);
    [movePath addQuadCurveToPoint:toPoint
                     controlPoint:CGPointMake(20,0)];
    
     
    CAKeyframeAnimation *moveAnim = [CAKeyframeAnimation animationWithKeyPath:@"position"];
    moveAnim.path = movePath.CGPath;
    moveAnim.removedOnCompletion = YES;
    
    //旋轉變化
    CABasicAnimation *scaleAnim = [CABasicAnimation animationWithKeyPath:@"transform"];
    scaleAnim.fromValue = [NSValue valueWithCATransform3D:CATransform3DIdentity];
    //x，y軸縮小到0.1,Z 軸不變
    scaleAnim.toValue = [NSValue valueWithCATransform3D:CATransform3DMakeScale(0.3, 0.3, 1.0)];
    scaleAnim.removedOnCompletion = YES;
    
    //透明度變化
    CABasicAnimation *opacityAnim = [CABasicAnimation animationWithKeyPath:@"alpha"];
    opacityAnim.fromValue = [NSNumber numberWithFloat:1.0];
    opacityAnim.toValue = [NSNumber numberWithFloat:0.4];
    opacityAnim.removedOnCompletion = YES;
    
    //路徑，旋轉，透明度組合起來執行
    CAAnimationGroup *animGroup = [CAAnimationGroup animation];
    animGroup.animations = [NSArray arrayWithObjects:moveAnim, scaleAnim,opacityAnim, nil];
    animGroup.duration = 1;
    [self.imageView.layer addAnimation:animGroup forKey:nil];
    
}

效果以下：

 

效果土2 ：

源代碼下載