UIView动画与拉伸图片

1.block式动画

横向或纵向移动XY

 [UIView animateWithDuration:0.5 animations:^{

        self.aView.frame = CGRectMake(_aView.frame.origin.x, _aView.frame.origin.y + 50, _aView.frame.size.width, _aView.frame.size.height);

    }];

或者

  [UIView animateWithDuration:0.5 animations:^{

        //_aView.transform = CGAffineTransformMakeTranslation(0, 20);

        _aView.transform = CGAffineTransformTranslate(_aView.transform, 10, 10);

    }];

渐变效果

 [UIView animateWithDuration:0.5 animations:^{

        _aView.alpha = !_aView.alpha;

    }];

2.头尾式动画  ---翻页效果

[UIView beginAnimations:nil context:nil]  1， 开始配置动画

[UIView setAnimationDuration:0.5];设置动画时间

//========2，要执行的动画代码==========================================

[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];

[UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:_aview cache:NO];

//=======要执行的动画代码============================================

[UIView commitAnimations]  3，提交动画

 

旋转效果

旋转一次

[UIView animateWithDuration:0.5 animations:^{

        _aView.transform = CGAffineTransformMakeRotation(M_PI);

    }];

 旋转多次

    [UIView animateWithDuration:0.5 animations:^{

        _aView.transform = CGAffineTransformRotate(_aView.transform, M_PI_4);

    }];

  放大效果

 [UIView animateWithDuration:0.2 animations:^{

 //_aView.transform = CGAffineTransformMakeScale(2, 2);

 _aView.transform = CGAffineTransformScale(_aView.transform, 1.1, 1.1);

}];

缩小  

    [UIView animateWithDuration:0.5 animations:^{

        _aView.transform = CGAffineTransformMakeScale(0.5, 0.5);

    }];

还原

   _PinkView.transform = CGAffineTransformIdentity；

二。局部拉伸图片

一张图片本来是25*60，而button是150*150的，需求：将图片设置为button背景，图片不模糊‘

UIButton *btn = [UIButton alloc ]initwithframe:CGRectMake(100,100,150,150)];

UIImage *img = [UIImage imagenamed:pic];

CGFloat top = 25;//上端盖

CGFloat buttom = 25;

CGFloat left= 10;

CGFloat right= 10;

UIEdgeInset inset = UIEdgeInsetMake(top,buttom,left,right);

image = [image resizableimagewithCapInset:inset resizingMode:(UIImageResizingMode)resizingMode];

[btn setBackgroundImage:image forStatus:UIControlStatusNormals];

[self.view addSubview:btn

iOS中有个叫端盖(end cap)的概念，用来指定图片中的哪一部分不用拉伸。比如下图中，黑色代表需要被拉伸的矩形区域，上下左右不需要被拉伸的边缘就称为端盖。

转载于:https://www.cnblogs.com/yangqinglong/p/5158495.html