Question

我试图在Xcode中翻转UIProgressView 180，我正在尝试同时缩放进度视图。缩放效果很好，直到我添加翻转，然后缩放不再起作用。有什么建议？谢谢！

[self.secondsPorgressBarTicker setTransform:CGAffineTransformMakeScale(1.0, 10.0)];

[self.secondsPorgressBarTicker setTransform:CGAffineTransformMakeRotation(-M_PI)];

Answer 1

您正在设置转换然后重置它。如果要组合变换，则需要使用不同的CG函数。请记住，订单与变换有关，因此请使用任何一个解决您的问题：

CGAffineTransform transform = CGAffineTransformMakeRotation(-M_PI);
transform = CGAffineTransformScale(transform, 1.0, 10.0);
[self.secondsPorgressBarTicker setTransform:transform];

或

CGAffineTransform transform = CGAffineTransformMakeScale(1.0, 10.0);
transform = CGAffineTransformRotate(transform, -M_PI);
[self.secondsPorgressBarTicker setTransform:transform];

Answer 2

您正在进行新的转化。修改现有的：

[self.secondsPorgressBarTicker setTransform:CGAffineTransformMakeScale(1.0, 10.0)];
[self.secondsPorgressBarTicker setTransform:CGAffineTransformRotate(self.secondsPorgressBarTicker, -M_PI)

进度视图翻转和缩放

2 个答案: