WKWebView 捏合放大缩小

对于WKWebView 禁止手势缩放就不多赘述了

注意：

WKWebView 在手机上不支持

UIWebView 进行缩放

    UIWebView *web = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, ScreenWidth, ScreenHeight)];
    web.backgroundColor = [UIColor whiteColor];
    web.scalesPageToFit = YES;
    web.autoresizingMask = (UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight);
    web.multipleTouchEnabled = YES;
    web.userInteractionEnabled = YES;
    web.scrollView.showsHorizontalScrollIndicator = NO;
    web.scrollView.showsVerticalScrollIndicator = NO;
    [web loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"URL 地址"]]];
    [self.view addSubview:web];

HTML 页面需要

• 不要添加如下代码

<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">

• 如下代码是可以的

<meta charset="UTF-8">