view由小变大动画

最新推荐文章于 2022-11-10 17:47:58 发布

原创最新推荐文章于 2022-11-10 17:47:58 发布 · 2.6k 阅读

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本文介绍如何使用UIView动画方法实现一个视图从初始状态逐渐放大再恢复原状的动画效果。通过设置不同阶段的缩放比例，使视图呈现出平滑过渡的动画感。此过程分为三步：首先将视图缩放至极小；然后快速放大到120%；接着缓慢缩小至90%；最后恢复到原始大小。

UIView *singleMapView = [[UIView alloc]
initWithFrame:CGRectMake(10, 150, 300, 250)];
singleMapView.backgroundColor = [UIColor blackColor];
[self.view addSubview:singleMapView];
singleMapView.transform = CGAffineTransformMakeScale(0.05, 0.05);
[UIView animateWithDuration:3
animations:^{
singleMapView.transform = CGAffineTransformMakeScale(1.2, 1.2);
}completion:^(BOOL finish){
[UIView animateWithDuration:3
animations:^{
singleMapView.transform = CGAffineTransformMakeScale(0.9, 0.9);
}completion:^(BOOL finish){
[UIView animateWithDuration:3
animations:^{
singleMapView.transform = CGAffineTransformMakeScale(1, 1);
}completion:^(BOOL finish){
}];
}];
}];
CGAffineTransformMakeScale 缩放函数，括号内为比例。+ (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion view由一个大小缩放到另外一个大小的动画效果。