适配wkwebview字符串显示，查看大图
NSString * foreString = @"<html><head><meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no"> <style type="text/css"> body { line-height:150%} </style>
<style>img{max-width: 100%; width:auto; height:auto;}</style><style>iframe {display: block;max-width:100%;
margin-top:10px; margin-bottom:10px;}</style><style type="text/css">
</style></head><body style="margin:0;padding:0">";
NSString * tailString = @"</body></html>";
NSString * htmlString = [NSString stringWithFormat:@"%@%@%@",foreString,htmlString,tailString];
[self.webView loadHTMLString:htmlString baseURL:nil];
[self.webView addTapImageGesture];//查看大图
=======================================
import <WebKit/WebKit.h>
NS_ASSUME_NONNULL_BEGIN
@interface WKWebView (images)
-(void) addTapImageGesture;
@end
NS_ASSUME_NONNULL_END
import "WKWebView+images.h"
@implementation WKWebView (images)
-(void) addTapImageGesture
{
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGestureAction:)];
tapGesture.numberOfTapsRequired = 1;
tapGesture.delegate = (id)self;
[self addGestureRecognizer:tapGesture];
}
//这里增加手势的返回，不然会被WKWebView拦截
-
(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
return YES;
}
-(void) tapGestureAction:(UITapGestureRecognizer *)recognizer
{
//首先要获取用户点击在WKWebView 的范围点
CGPoint touchPoint = [recognizer locationInView:self];
NSString *imgURLJS = [NSString stringWithFormat:@"document.elementFromPoint(%f, %f).src", touchPoint.x, touchPoint.y];
//跟着注入JS 获取 异步获取结果
[self evaluateJavaScript:imgURLJS completionHandler:^(id result, NSError * _Nullable error) {
if (error == nil)
{
NSString *url = result;
if (url.length == 0)
{
return ;
}
else
{
//如果是url 则转换成 UIImage
// NSData *imgData = [NSData dataWithContentsOfURL:[NSURL URLWithString:url]];NSLog(@"dddddd = %@", url);
// UIImage *clickImg = [UIImage imageWithData:imgData];
// if (clickImg)
// {
//
//
// }
NSArray *imgArr = @[url];
// NSMutableArray *tempArray = [[NSMutableArray alloc] init];
// [tempArray addObject:clickImg];
//TO对图片的操作
NSMutableArray * bigImageArray = [NSMutableArray array];
for (int i = 0; i < imgArr.count; i ++) {
YBIBImageData *data = [YBIBImageData new];
data.imageURL = [NSURL URLWithString:imgArr[i]];
data.allowSaveToPhotoAlbum = YES;
// data.defaultLayout.zoomScaleSurplus = 3;
[bigImageArray addObject:data];
}
// [bigImageArray addObject:data];
YBImageBrowser *browser = [YBImageBrowser new];
browser.dataSourceArray = bigImageArray;
browser.currentPage = 0;
[browser show];
}
}
}];
}
