resizableImageWithCapInsets: resizingMode:拉伸图片

摘要: resizableImageWithName拉伸图片

- (UIImage *)resizableImageWithCapInsets:(UIEdgeInsets)capInsets resizingMode:(UIImageResizingMode)resizingMode NS_AVAILABLE_IOS(6_0); // the interior is resized according to the resizingMode

+ (UIImage *)resizableImageWithName:(NSString *)imageName
{

// 加载原有图片
UIImage *norImage = [UIImage imageNamed:imageName];
// 获取原有图片的宽高的一半
CGFloat w = norImage.size.width * 0.5;
CGFloat h = norImage.size.height * 0.5;
// 生成可以拉伸指定位置的图片
UIImage *newImage = [norImage resizableImageWithCapInsets:UIEdgeInsetsMake(h, w, h, w) resizingMode:UIImageResizingModeStretch];

return newImage;
}