UI圆角以及阴影等效果利用layer属性

制作圆角button等

//必须导入的空间
#import<QuartzCore/QuartzCore.h>

就拿view来举例
view.layer.masksToBounds=YES; //设置为yes，就可以使用圆角
view.layer.cornerRadius= 5; //设置它的圆角大小
view.layer.borderWidth=1; //视图的边框宽度
view.layer.borderdg= [[UIdggray  dg].CGdg]; //视图的边框颜色

制作阴影NavBar稍后附上代码

按钮从A点平滑到B点

+ (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_4_0);

+ (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_4_0); // delay = 0.0, options = 0

+ (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_4_0); // delay = 0.0, options = 0, completion = NULL

- (void)move
{
    __block CGRect rect = button.frame;
    
    [UIView animateWithDuration:0.5
                     animations:^{
                         //button.transform = CGAffineTransformMakeRotation(3.14);
                         button.transform = CGAffineTransformMakeTranslation(20, 20);
                     }
                     completion:^(BOOL finished){
                         rect.origin.x+=20;
                         rect.origin.y+=20;
                         button.frame = rect;
                     }];
}
- (IBAction)bkTap:(id)sender
{
    [self move];
}
//以上存在第一次有用后在不起作用，改成如下：
fOffsetX,fOffsetY表示移动的话，代码这么写就对了：
fOffsetX+=20;
fOffsetY+=20;
CGAffineTransformMakeTranslation(fOffsetX, fOffsetY);

//从上拉到下

//show
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.5];
    //显示tableview时，展开当前view
    self.frame = CGRectMake(90, 122, 210,28);
    m_tableViewDownList.frame = CGRectMake(0, 28, self.frame.size.width, nHeight);
    [UIView commitAnimations];
//hide
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.5];
    self.frame =CGRectMake(90, 122, 210,28);
    m_tableViewDownList.frame = CGRectMake(0, 28, self.frame.size.width, 0);
    [UIView commitAnimations];

//加入动画淡入淡出

[UIView animateWithDuration:1.0 animations:^{
        m_tableViewDownList.alpha = 0.0;
        m_tableViewDownList.alpha = 1.0;
    }];