根据返回的web 获取高度
//页面加载完成之后调用
- (void)webView:(WKWebView*)webView didFinishNavigation:(WKNavigation*)navigation {
[webView evaluateJavaScript:@"document.body.offsetHeight;" completionHandler:^(id _Nullable any, NSError * _Nullable error) {
CGSize maxSize =CGSizeMake(Width-30,MAXFLOAT);
//计算attributedString的rect
CGSize size = [_label_Title.attributedText boundingRectWithSize:maxSize options:NSStringDrawingUsesLineFragmentOrigin context:nil].size;
//获取总高度
double height = [any floatValue]+ size.height+35;
}];
}
