屏幕截图

#pragma mark - 截屏
- (void)screenShot:(UITableView *)basetable {
    UIImage* image = nil;
    UIGraphicsBeginImageContext(basetable.contentSize);
  {
    CGPoint savedContentOffset = basetable.contentOffset;
    CGRect savedFrame = basetable.frame;
    basetable.contentOffset = CGPointZero;
    basetable.frame = CGRectMake(0, 0, basetable.contentSize.width,
basetable.contentSize.height);
    [basetable.layer renderInContext: UIGraphicsGetCurrentContext()];
    image = UIGraphicsGetImageFromCurrentImageContext();
    basetable.contentOffset = savedContentOffset;
    basetable.frame = savedFrame;
        }
    UIGraphicsEndImageContext();
    if (image != nil) {
    NSLog(@"截图成功!");  
    UIImageWriteToSavedPhotosAlbum(image,self,@selector(image:didFinishSavingWithError:
contextInfo:),NULL);
} }

#pragma mark - 保存到相册
- (void)image:(UIImage *)image didFinishSavingWithError:(NSError*)error contextInfo: (void*)contextInfo {
if(!error){
     NSLog(@"存到相册");
} else {
     NSLog(@"存储失败");
    }
}