UIView动画

来源：互联网发布：大数据应用的调研提纲编辑：程序博客网时间：2024/06/05 10:30

IOS动画实现很简单，几行代码就能制作出很漂亮的效果。

实现一个这样的动画：从视图控制器底部创建一个红色区域的视图，并且慢慢上升。

1.创建

    _aniView = [[UIView alloc] initWithFrame:CGRectMake(0, self.view.bounds.size.height, self.view.bounds.size.width, 50)];    _aniView.backgroundColor = [UIColor redColor];    _aniView.alpha = 0;    [self.view addSubview:_aniView];        [UIView beginAnimations:nil context:nil];    [UIView setAnimationDuration:1.0];    _aniView.frame = CGRectMake(0, 500, self.view.bounds.size.width,self.view.bounds.size.height-300);    _aniView.alpha = 1;    [UIView commitAnimations];            _ctrl = [[UIControl alloc] initWithFrame:self.view.bounds];    _ctrl.backgroundColor = [UIColor colorWithRed:200.0f/255.0f green:100.0f/255.0f blue:50/255 alpha:0.5];    [_ctrl addTarget:self action:@selector(showView:) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:_ctrl];

2.点击UIControl后，动画消失。

- (void)showView:(UIControl *)ctl{//    [UIView beginAnimations:nil context:nil];//    [UIView setAnimationDuration:1.0];//    showView.frame = CGRectMake(0, self.view.bounds.size.height, self.view.bounds.size.width, 100);//    showView.alpha = 0;//    [UIView commitAnimations];        [UIView animateWithDuration:1.0 animations:^{        _aniView.frame = CGRectMake(0, self.view.bounds.size.height, self.view.bounds.size.width, self.view.bounds.size.height - 300);//        [_aniView removeFromSuperview];    }];        [ctl removeFromSuperview];    }

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