1.将view设置成圆角首先导入QuartzCore.framework，#import 然后添加下面两行代码：view.layer.cornerRadius = 8;//圆角view.layer.masksToBounds = YES;//在所在的层绘制圆角2.CALayer就是层，这个层你随便控制他的大小，旋转，角度，坐标变化或者

1.绘图总结: 绘图前设置: CGContextSetRGBFillColor/CGContextSetFillColorWithColor          //填充色 CGContextSetRGBStrokeColor/CGContextSetStrokeColorWithColor           //笔颜色 CGContextSetLineWidth

切分图片- (void)drawRect:(CGRect)rect { CGContextRef context = UIGraphicsGetCurrentContext(); CGContextSaveGState(context); CGContextTranslateCTM(context, 0, rect.size.height); CGContex

Quartz 2D编程指南(5) - 变换(Transforms)解决图片翻转问题CGAffineTransform normalState=CGContextGetCTM(context);    CGContextTranslateCTM(ctx, 0, imageSize.height);    CGContextScaleCTM(ctx, 1,

- (UIImage *)addImage:(UIImage *)image1 withImage:(UIImage *)image2 rect1:(CGRect)rect1 rect2:(CGRect)rect2 { CGSize size = CGSizeMake(rect1.size.width+rect2.size.width, rect1.size.height); UIGrap

setAnimationTransition:forView:cache:在动画块中为视图设置过渡+ (void)setAnimationTransition:(UIViewAnimationTransition)transition forView:(UIView *)view cache:(BOOL)cache参数transition把一个过渡效果应用到视图中。可能的值定义

使用UIView类的UIViewAnimationWithBlocks扩展函数说明+ (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)options animations:(void (^)(void))ani

最普通动画: //开始动画 [UIView beginAnimations:nil context:nil];  //设定动画持续时间 [UIView setAnimationDuration:2]; //动画的内容 frame.origin.x += 150; [img setFrame:frame]; //动画结束 [UIView commitAnimati

CAAnimation需要添加库，和包含头文件caanimation有多个子类CABasicAnimationCABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"opacity"];//@""里的字符串有多种，可以自己找相关资料，一定要填对，动画才会执行 opacity设置