iOS WKWebView的使用

参考文档：

WKWebView的使用和各种坑的解决方法（OC＋Swift）
WKWebView的使用及js交互
iOS：WKWebView与UIWebView的区别

需求一、修改WKWebView字体大小和颜色

//  LSXMatchDetalVCView.m
//  Badminton
//
//  Created by mac on 2018/6/13.
//  Copyright © 2018年 LSX. All rights reserved.
//

#import "LSXMatchDetalVCView.h"
@interface LSXMatchDetalVCView ()<WKNavigationDelegate>

@end

@implementation LSXMatchDetalVCView{
  
    WKWebView *webView;

}
-(instancetype)initWithFrame:(CGRect)frame{
    if (self =[super initWithFrame:frame]) {
        self.backgroundColor=[UIColor orangeColor];
        
        webView=[[WKWebView alloc]init];
        [self addSubview:webView];
        webView.backgroundColor=[UIColor whiteColor];
        webView.opaque = NO;
        webView.navigationDelegate=self;
        // 去掉webView的滚动条
        for (UIView *subView in [webView subviews])
        {
            if ([subView isKindOfClass:[UIScrollView class]])
            {
                // 不显示竖直的滚动条
                [(UIScrollView *)subView setShowsVerticalScrollIndicator:NO];
            }
        }
    }
    return self;
}
-(void)layoutSubviews{
    webView.frame=CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT-49-64);
    // 添加额外的滚动附近区域的内容
    webView.scrollView.contentInset = UIEdgeInsetsMake(SCREEN_WIDTH/2, 0, 0, 0);
}
-(void)setModel:(LSXMatchDetalModel *)model{
    _model=model;
    NSString *str =_model.content;
    //webView文本
    [webView loadHTMLString:str baseURL:nil];  
}
// WKNavigationDelegate方法 页面加载完成之后调用
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation{
    //修改字体大小 300%
    [ webView evaluateJavaScript:@"document.getElementsByTagName('body')[0].style.webkitTextSizeAdjust= '200%'" completionHandler:nil];
    
    //修改字体颜色  #9098b8
    [ webView evaluateJavaScript:@"document.getElementsByTagName('body')[0].style.webkitTextFillColor= '#9098b8'" completionHandler:nil];
    
}