动画效果：叶子掉到地上

Question

需要设计一些变换代码来实现自然落下，就像树叶从树上掉下来一样。

以下是一些代码，从一个地方飞到另一个地方，有一些旋转角度。

[UIView beginAnimations:nil context:NULL]; 

[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationDuration:5.0];
[UIView setAnimationDelegate:self];
//[UIView setAnimationRepeatCount:1e100f];  //coutless
[UIView setAnimationRepeatCount:1];   // 1 time 
//[UIView setAnimationRepeatAutoreverses:YES];


leaf2.frame = CGRectMake(LEAF2_X, LEAF2_Y, LEAF2_W, LEAF2_H);
leaf2.transform = CGAffineTransformMakeRotation(ANGLE);

[UIView commitAnimations];

Answer 1

看看接下来的两个问题是否有帮助：

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