• WKWebView+Capture.h

#import #import NSASSUMENONNULLBEGIN@interface WKWebView /** * 捕获 WKWebView 的完整内容并生成长截图 * @param completion 完成回调，返回拼接好的长图 */- captureEntireWebViewWithCompletion:)completion;@endNSASSUMENONNULLEND

• WKWebView+Capture.m

#import "WKWebView+Capture.h"@implementation WKWebView /** * 捕获 WKWebView 的完整内容并生成长截图 * @param completion 完成回调，返回拼接好的长图 */- captureEntireWebViewWithCompletion:)completion { // ⚠️ 关键：确保在主线程执行 if { NSLog;if completion;return，} // 步骤1: 检查父视图并保存原始状态 UIView *parentView = self.superview;if { if completion;return，} CGRect originalFrame = self.frame;CGPoint originalContentOffset = self.scrollView.contentOffset;// 步骤2: 创建遮罩视图，保持界面"静止"的视觉效果。可以额外添加loading UIView *snapshotCoverView =;snapshotCoverView.frame = self.frame;话说回来，// 确保遮罩视图位置与 WebView 完全一致;// 步骤3: 创建隐藏的临时窗口和容器 UIWindow *temporaryWindow = initWithFrame:self.bounds];temporaryWindow.windowLevel = UIWindowLevelNormal -;// 置于底层 temporaryWindow.hidden = NO;temporaryWindow.alpha =;其实，temporaryWindow.userInteractionEnabled = NO;UIView *captureContainerView = initWithFrame:self.bounds];老实说，captureContainerView.clipsToBounds = YES;// 将 WebView 移入临时容器;
// 步骤4: 获取完整内容高度并调整布局 CGFloat fullContentHeight = self.scrollView.contentSize.height;self.frame = CGRectMake;self.scrollView.contentOffset = CGPointZero;_weak typeof weakSelf = self;// ⭐ 延迟执行，确保 WebView 内容布局与渲染完成 dispatchafter)。dispatchgetmainqueue,^{ _strong typeof strongSelf = weakSelf;if { if completion;return，} // 步骤5: 分段截图主要原因 CGFloat pageHeight = captureContainerView.bounds.size.height;说起来，// 单屏高度
CGFloat totalHeight = fullContentHeight;// 总内容高度
NSMutableArray *imageSlices =;CGFloat offsetY =;while { CGFloat remainingHeight = totalHeight - offsetY;CGFloat sliceHeight = MIN;老实说，// 处理最终一段高度不足一屏的情况
if { CGRect containerFrame = captureContainerView.frame;不过，containerFrame.size.height = remainingHeight;captureContainerView.frame = containerFrame;}
// 移动 WebView，将当前要截取的区域"暴露"出来
CGRect webViewFrame = strongSelf.frame;webViewFrame.origin.y = -offsetY;

strongSelf.frame = webViewFrame;
 // 渲染当前分段到图像上下文


UIGraphicsBeginImageContextWithOptions。NO,.scale )，

CGContextRef context = UIGraphicsGetCurrentContext;

CGFloat scaleX = originalFrame.size.width / captureContainerView