ios截屏代码,ios开发截屏,ios网页截屏代码

  1. 云栖社区>
  2. 博客>
  3. 正文

ios截屏代码,ios开发截屏,ios网页截屏代码

贱见 2014-11-17 17:20:00 浏览769
ios开发过程中可以对任何视图进行截屏,包括网页和视频,我写了一个方法:
- (UIImage*)snapViewToImage:(UIView*)currentView{
    UIGraphicsBeginImageContext(self.view.frame.size);
    CGContextRef context=UIGraphicsGetCurrentContext();
    [currentView.layer renderInContext:context];
    UIImage *image=UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return image;
}
调用的时候只需要:[self snapViewToImage:self.view];就可以了
注意:需要导入<QuartzCore/QuartzCore.h>

如果你想截取当前视图的一部分,比如1/4的区域,那么我们可以创建另外一个方法:
-(UIImage*)captureView:(UIView *)theView WithRect:(CGRect)rect{
    UIImage *mainImage = [self snapViewToImage:self.view];//这里引用了上面这个方法
    CGImageRef subImageRef = CGImageCreateWithImageInRect(mainImage.CGImage, rect);  
    CGRect smallBounds = CGRectMake(rect.origin.x, rect.origin.y, CGImageGetWidth(subImageRef), CGImageGetHeight(subImageRef));
    UIGraphicsBeginImageContext(smallBounds.size);  
    CGContextDrawImage(UIGraphicsGetCurrentContext(), smallBounds, subImageRef);  
    UIImage* smallImage = [UIImage imageWithCGImage:subImageRef];  
    UIGraphicsEndImageContext();  
    return smallImage;  

用法:[self captureView:self.view WithRect:CGRectMake(160, 200, 160, 240)];

这里有个小例子:
http://pan.baidu.com/share/link?shareid=254388&uk=470161866