ios UIView animateWithDuration：duration：animations：completion：似乎有一个默认的过渡？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/10794763/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
UIView animateWithDuration: duration: animations: completion: seems to have a default transition?
提问by Fitzy
In my program, I want to create an animation that will move at a constant speed. It appears that the animation starts slowly, speeds up and then finishes slowly. Is there any way to change this?
在我的程序中，我想创建一个以恒定速度移动的动画。看起来动画开始缓慢，加速，然后缓慢结束。有什么办法可以改变这种情况吗？
回答by adig
You can change this setting by using the animateWithDuration:delay:options:animations:completion:alternative. Send an UIViewAnimationOptionmask for the option parameter. These are the options that you're interested in :
您可以使用animateWithDuration:delay:options:animations:completion:替代方法更改此设置。发送UIViewAnimationOption选项参数的掩码。这些是您感兴趣的选项：
UIViewAnimationOptionCurveEaseInOut
UIViewAnimationOptionCurveEaseIn
UIViewAnimationOptionCurveEaseOut
UIViewAnimationOptionCurveLinear
The documentation says that UIViewAnimationOptionCurveEaseInOutis the default value.
文档说这UIViewAnimationOptionCurveEaseInOut是默认值。
See the documentation for more details : http://developer.apple.com/library/ios/#documentation/uikit/reference/uiview_class/uiview/uiview.html
有关更多详细信息，请参阅文档：http: //developer.apple.com/library/ios/#documentation/uikit/reference/uiview_class/uiview/uiview.html
回答by Paul T.
You should use, that will solve your problem
你应该使用，这将解决你的问题
[UIView animateWithDuration:duration delay:0 options:UIViewAnimationOptionCurveLinear animations:^{
//code with animation
} completion:^(BOOL finished) {
//code for completion
}];
