IOS学习笔记（三）UIView animation

iphone中动画的实现主要分为两种，UIView动画 和Core Animation动画

UIView动画主要可以实现的效果包括：

1.frame,bounds,center//改变View的frame属性

-(void)doChangeFrame
{
//{
//    [UIView beginAnimations:nil context:nil];
//    [UIView setAnimationDuration:2];
//    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
//    [UIView setAnimationDelegate:self];
//    [UIView setAnimationDidStopSelector:@selector(stopDelegate)];
//    smallImage.frame = CGRectMake(150, 80, 30, 30);
//    
//    //smallImage.alpha = 0;
//    [UIView commitAnimations];
    
    [UIView animateWithDuration:2.0 animations:^(void){smallImage.frame = CGRectMake(150, 80, 30, 30);} completion:^(BOOL finished) {
        smallImage.alpha = 0;
    }];
//块语句定义及使用方法
   /*int (^myBlock )(int num) = ^(int num)
    {
        return num*2;
    };
    NSLog(@"%d",myBlock(7));*/
}

2.alpha //改变透明度

3.backgroundColor //改变背景颜色

4.contentStretch //拉伸变化

5.transform //仿射变换，其中又包括Rotate，Invert，Translate，Scale（旋转，反转，位移，缩放）

-(void)doRotate//旋转
{
    CGAffineTransform transform=         CGAffineTransformMakeRotation(M_PI/4);
    
    [UIView beginAnimations:nil context:nil];
    bigImage.transform = transform;
    [UIView commitAnimations];
}

-(void)doInvert//反转
{
    BOOL isSingle = seg.selectedSegmentIndex;
    //如果单次 直接翻转到原始状态 如果连续 在以前基础上再次进行反转
    
    CGAffineTransform transform = isSingle?CGAffineTransformInvert(bigImage.transform):CGAffineTransformIdentity;
    
    [UIView beginAnimations:nil context:nil];
    bigImage.transform = transform;
    [UIView commitAnimations];
}

-(void)doTranslate//位移
{
    BOOL isSingle = seg.selectedSegmentIndex;
    //如果单次 只改变一次 如果连续 在以前基础上再次进行移位
    CGAffineTransform transform = isSingle?CGAffineTransformMakeTranslation(10, 10):CGAffineTransformTranslate(bigImage.transform, 10, 10);
    
//    [UIView beginAnimations:nil context:nil];
//    bigImage.transform = transform;
//    [UIView commitAnimations];
    [UIView animateWithDuration:1 animations:^{
      bigImage.transform = transform;
    }];
}

-(void)doScale//缩放
{
    BOOL isSingle = seg.selectedSegmentIndex;
    //如果单次 只改变一次 如果连续 在以前基础上再次进行缩放
    CGAffineTransform transform = isSingle?CGAffineTransformMakeScale(1.0, 1.1):CGAffineTransformScale(bigImage.transform, 1.0, 1.1);
    
    [UIView beginAnimations:nil context:nil];
    bigImage.transform = transform;
    [UIView commitAnimations];

}