xcode 如何为按钮设置动画？（目标 c）
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How to animate a button? (objective c)
提问by Fernando Pérez Guzmán
I'm new at Xcode and Objectice C and would preciate some help with my app. I want to add a translation animation to a button. What would be the code to, for example, move "button" from X:30 Y:50 to X:10 Y:70? Thanks :).
我是 Xcode 和 Objectice C 的新手，希望对我的应用程序有一些帮助。我想为按钮添加翻译动画。例如，将“按钮”从 X:30 Y:50 移动到 X:10 Y:70 的代码是什么？谢谢 ：）。
回答by
For old compilers/iOSes:
对于旧的编译器/iOS：
// set the original frame
button.frame = CGRectMake(30, 50, 100, 100);
// animate to the new one
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.75];
button.frame = CGRectMake(10, 70, 100, 100);
[UIView commitAnimations];
For newer compilers/iOSes:
对于较新的编译器/iOS：
// set the original frame
button.frame = CGRectMake(30, 50, 100, 100);
// animate
[UIView animateWithDuration:0.75 animations:^{
button.frame = CGRectMake(10, 70, 100, 100);
}];
回答by Jeremy1026
UIView (a super class of UIButton) has the ability to be animated, use something like the following.
UIView（UIButton 的超类）具有动画的能力，使用类似下面的东西。
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:2];
CGAffineTransform transform = CGAffineTransformMakeTranslation(-20, 20);
[aButton setTransform:transform];
[UIView commitAnimations];
