iphone-常用的对视图图层(layer)的操作

1.给图层添加背景图片：

myView.layer.contents = (id)[UIImageimageNamed:@"view_BG.png"].CGImage;  

2.将图层的边框设置为圆脚

myWebView.layer.cornerRadius = 8;
myWebView.layer.masksToBounds = YES;  

3.给图层添加一个有色边框

myWebView.layer.borderWidth = 5;
 myWebView.layer.borderColor = [[UIColorcolorWithRed:0.52green:0.09blue:0.07alpha:1] CGColor];