图片拉伸

+(UIImage*)wlisWithImage:(NSString *)name{

//获取图片

UIImage * img=[UIImage imageNamed:name];

//获取图片宽

CGFloat imgW=img.size.width;

//获取图片高

CGFloat imgH=img.size.height;

//获取可拉伸的图片

return [img resizableImageWithCapInsets:UIEdgeInsetsMake(imgH*0.5, imgW*0.5, imgH*0.5, imgW*0.5) resizingMode:UIImageResizingModeTile];

}

/**

以前的拉伸图片

*/

+(UIImage *)stretchableImage:(NSString *)name{

//获取图片

UIImage * img=[UIImage imageNamed:name];

//获取图片宽

CGFloat imgW=img.size.width;

//获取图片高

CGFloat imgH=img.size.height;

/**

leftCapWidth = width - leftCapWidth - 1

topCapHeight = height - topCapWidth - 1

*/

return [img stretchableImageWithLeftCapWidth:imgW*0.5 topCapHeight:imgH*0.5];

}