WKWebView截图
/** webView截屏 deviation:底部偏移量*/
+(UIImage *)screenshotWhitWK:(WKWebView *)wkweb andDeviation:(CGFloat)deviation{
CGFloat boundsWidth = wkweb.bounds.size.width;
CGFloat boundsHeight = wkweb.bounds.size.height;
UIScrollView *scrollView = wkweb.scrollView;
CGPoint oldOffset = scrollView.contentOffset;
[scrollView setContentOffset:CGPointZero animated:NO];
CGFloat contentHeight = scrollView.contentSize.height-deviation;
CGSize shotSize = CGSizeMake(scrollView.contentSize.width, contentHeight);
CGFloat scale = [UIScreen mainScreen].scale;
NSMutableArray *images = [NSMutableArray array];
while (contentHeight > 0) {UIGraphicsBeginImageContextWithOptions(wkweb.bounds.size, NO, scale);
[wkweb.layer renderInContext:UIGraphicsGetCurrentContext()];UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
[images addObject:image];
CGFloat offsetY = scrollView.contentOffset.y;
[scrollView setContentOffset:CGPointMake(0, offsetY + boundsHeight) animated:NO];
contentHeight -= boundsHeight;
}
[scrollView setContentOffset:oldOffset animated:NO];UIGraphicsBeginImageContextWithOptions(shotSize, NO, scale);
for (NSInteger index = 0; index < images.count; index++) {
UIImage *image = images[index];
[image drawInRect:CGRectMake(0, boundsHeight * index, boundsWidth, boundsHeight)];
}
UIImage *fullImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return fullImage;
}
####View生成图片
#####1.将传入的View生成图片：
+ (UIImage *)makeImageWithView:(UIView *)view{
CGSize s = view.bounds.size;
UIGraphicsBeginImageContextWithOptions(s, NO, [UIScreen mainScreen].scale);
[view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage*image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
#####2.将传入的View生成图片,可以显示layer(分享分时图、k线)
+ (UIImage *)imageFromView:(UIView *)view{
UIGraphicsBeginImageContextWithOptions(view.bounds.size, YES, 0.0);
[view drawViewHierarchyInRect:view.bounds afterScreenUpdates:YES];
UIImage *theImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return theImage;
}
#####3.将tableview生成图片
+ (UIImage *)getTableViewimage:(UITableView *)tableview{
UIImage* viewImage = nil;
UIScrollView *scrollView = tableview;
UIGraphicsBeginImageContextWithOptions(CGSizeMake(scrollView.contentSize.width, scrollView.contentSize.height), NO, 0.0);
{
CGPoint savedContentOffset = scrollView.contentOffset;
CGRect savedFrame = scrollView.frame;
scrollView.contentOffset = CGPointZero;
scrollView.frame = CGRectMake(0, 0, scrollView.contentSize.width, scrollView.contentSize.height);
[scrollView.layer renderInContext: UIGraphicsGetCurrentContext()];
viewImage = UIGraphicsGetImageFromCurrentImageContext();
scrollView.contentOffset = savedContentOffset;
scrollView.frame = savedFrame;
}
UIGraphicsEndImageContext();
if (viewImage != nil) {
return viewImage;
}
return nil;
}
#####4.图片拼接
+ (UIImage *)addSlaveImage:(UIImage *)slaveImage toMasterImage:(UIImage *)masterImage {
CGSize size;
size.width = masterImage.size.width;
size.height = masterImage.size.height + slaveImage.size.height;
UIGraphicsBeginImageContextWithOptions(size, YES, 0.0);
[masterImage drawInRect:CGRectMake(0, 0, masterImage.size.width, masterImage.size.height)];
[slaveImage drawInRect:CGRectMake(0, masterImage.size.height, masterImage.size.width, slaveImage.size.height)];
UIImage *resultImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return resultImage;
}
