[英]Multistage animation using blocks
I know you can perform a two-stage animataion using blocks like so:我知道您可以使用如下块执行两阶段动画:
[UIView animateWithDuration:25.0 delay:0.0 options:UIViewAnimationCurveLinear animations:
^{
aView.alpha = 2.5;
}
completion:^(BOOL finished)
{
aView.hidden = YES;
}
];
..but how would I create a multistage (more than 2) animation using blocks? ..但是如何使用块创建多级(超过 2 个)animation?
Use nested animations:使用嵌套动画:
[UIView animateWithDuration:0.5
delay:0.0
options:UIViewAnimationOptionBeginFromCurrentState
animations:^{
//first animation
}
completion:^(BOOL finished){[UIView animateWithDuration:0.5
delay:0.0
options:UIViewAnimationOptionBeginFromCurrentState
animations:^{
//second animation
}
completion:^(BOOL finished){//and so on..
}];}];
or you can make a recursive, multi-stage animation method:或者您可以制作一个递归的多阶段 animation 方法:
-(void) multiStageAnimate{
[UIView animateWithDuration:0.5
delay:0.0
options:UIViewAnimationOptionBeginFromCurrentState
animations:^{
//animation code
}
completion:^(BOOL finished){
if(/* If terminating condition not met*/)
[self multiStageAnimate];
}];
}
I realize this is an older question, but I thought I'd add my input.我意识到这是一个较老的问题,但我想我会添加我的输入。
I created a class for handling multistage animation, available here!我创建了一个 class 用于处理多级 animation,可在此处获得!
It only supports a single duration and option set currently, but I'll probably add more features.它目前仅支持单个持续时间和选项集,但我可能会添加更多功能。
Here's how you use it:以下是你如何使用它:
// Create New Animation
MSAnimation * newAnimation = [MSAnimation newAnimationWithDuration:0.35 andOptions:UIViewAnimationOptionCurveEaseInOut];
// Add Sequence
[newAnimation addNewAnimationStage:^{
greenView.center = CGPointMake(greenView.center.x, greenView.center.y + 100);
}];
[newAnimation addNewAnimationStage:^{
greenView.center = CGPointMake(greenView.center.x + 100, greenView.center.y);
}];
[newAnimation addNewAnimationStage:^{
greenView.center = CGPointMake(greenView.center.x, greenView.center.y + 100);
}];
[newAnimation addNewAnimationStage:^{
greenView.center = CGPointMake(greenView.center.x - 50, greenView.center.y);
}];
[newAnimation addNewAnimationStage:^{
greenView.frame = CGRectMake(0, 0, 100, 100);
}];
// Animate Your Sequence With Completion
[newAnimation animateSequenceWithCompletion:^{
NSLog(@"All finished!");
}];
Gives you:给你:
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