webview加载html标签字符串时，手动嵌入内容格式控制来适
-
(void)setupHtmlContent:(NSString *)contentHtml loadedComplete:(void(^)(BOOL result,CGFloat webViewConetntHeight))complete {
self.loadedComplete = complete;
if (contentHtml.length > 0) {
NSString contentStyle = [NSString stringWithFormat:@"<head><meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no"><style>img{width:%fpx !important;}</style></head>",ScreenWidth - 182.0];NSString *html = [NSString stringWithFormat:@"<html>%@<body style=\"word-wrap:break-word; margin: 0 auto; padding: 0 15px; font-family:Arial\">%@</body></html>",contentStyle,contentHtml]; [self.webView loadHTMLString:html baseURL:[NSURL URLWithString:kDomainUrl]];} else {
complete ? complete(NO, 0) : nil;
}
}
pragma mark - add js method to webView
-
(void)addImgClickedJsEventToWebView {
// 1、加载完成之后开始注入js事件
[self.webView evaluateJavaScript:@"
function imageClickAction(){
var imgs=document.getElementsByTagName('img');
var length=imgs.length;
for(var i=0;i<length;i++){
img=imgs[i];
img.onclick=function(){
window.location ='mobile-store-image-preview:'+this.src;
}
}
}
" completionHandler:^(id _Nullable result,NSError * _Nullable error) {}];
// 2、触发方法 给所有的图片添加onClick方法
[self.webView evaluateJavaScript:@"imageClickAction();" completionHandler:^(id _Nullable result,NSError * _Nullable error) {}];// 3、要拿到所有img标签对应的图片的src
[self.webView evaluateJavaScript:@"document.getElementsByTagName('img').length" completionHandler:^(id _Nullable result,NSError * _Nullable error) {
// 3.1、拿到img标签的个数
NSUInteger length = [result integerValue];
// 3.2、遍历标签，拿到标签中src的内容
for (int i =0 ; i < length; i++) {
NSString *jsStr = [NSString stringWithFormat:@"document.getElementsByTagName('img')[%d].src",i];
[self.webView evaluateJavaScript:jsStr completionHandler:^(id _Nullable result,NSError * _Nullable error) {
EOADetailLog(@"%@",result);
// 3.3、将标签中src内容存入数组
if ([self.imgsArray containsObject:result] == NO) {
[self.imgsArray addObject:result];
}
}];
}
}];
} -
(void)jumpPreviewImagePageWithImageUrl:(NSString *)imgUrl {
NSInteger index = [self.imgsArray indexOfObject:imgUrl];
CDPreviewPictureVC *previewVC = [[CDPreviewPictureVC alloc] initWithBrowseUrlPictures:self.imgsArray startAtIndex:index onClicked:nil];
[self.viewController presentViewController:previewVC animated:NO completion:nil];
}
