ios APP使用WKWebView打开本地h5文件（跨域、Undefined symbols for architecture x86_64 “_OBJC_CLASS_$_WKWebView“..)

H5开发好的网页，想做成ios APP，于是 WKWebView 打开本地文件夹里的html页面。

下面例子里有地址带参数的和不带参数的。

遇到问题：

1、h5项目中用到了 less文件采用了发请求的方式、包括发送的ajax请求都出现了跨域的问题：

[self.webView.configuration.preferences setValue:@YES forKey:@"allowFileAccessFromFileURLs"];

2、报错：Undefined symbols for architecture x86_64 "_OBJC_CLASS_$_WKWebView"，referenced from...

点击项目 - General - Frameworks,Libraries,and Embedded Content 点击 +

选择WebKit.framework

#import "ViewController.h"

#define SCREENWIDTH  [UIScreen mainScreen].bounds.size.width
#define SCREENHEIGHT  [UIScreen mainScreen].bounds.size.height

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    NSString *bundlePath = [[NSBundle mainBundle]bundlePath];
    NSLog(@"bundlePath== : %@", bundlePath);//app打包后的路径 ，文件在app 内部
    //    /private/var/containers/Bundle/Application/645AC02B-F69F-4C87-B6AE-F404268A207D/webViewDemo.app

    
    //load login.html
    self.webView = [[WKWebView alloc] initWithFrame:CGRectMake(0, 0, SCREENWIDTH, SCREENHEIGHT)];
    //    WKWebViewConfiguration *config = [[WKWebViewConfiguration alloc] init];
    //    [config setValue:@(true) forKey:@"allowUniversalAccessFromFileURLs"];
    
    [self.webView.configuration.preferences setValue:@YES forKey:@"allowFileAccessFromFileURLs"];
    //    self.webView = [[WKWebView alloc] initWithFrame:self.view.bounds];
    [self.view addSubview:self.webView];
    
    
    NSString *basePath = [NSString stringWithFormat:@"%@/www",bundlePath];
    NSURL *baseUrl = [NSURL fileURLWithPath:basePath isDirectory:YES];
    
    
    //    加载html地址带参数 方法一 loadFileURL
    // 示例 portStr 固定8000 
    NSString *portStr = @"8000";//@(portstr.c_str()); 多个参数也可以直接拼在一起
    NSString *filePath = [NSString stringWithFormat:@"file://%@/login.html?httpPort=%@", basePath, portStr];
    NSURL *fileUrl = [NSURL URLWithString:filePath];
    NSLog(@"fileUrl== : %@", fileUrl);
    //file:///private/var/containers/Bundle/Application/645AC02B-F69F-4C87-B6AE-F404268A207D/webViewDemo.app/www/login.html?httpPort=8000
    [self.webView loadFileURL:fileUrl allowingReadAccessToURL:baseUrl];
    
    //    加载html地址带参数 方法二 loadRequest
    //    NSString *portStr = @(portstr.c_str());
    //    NSString *basePath2 = [NSString stringWithFormat:@"%@/www/login.html",bundlePath];
    //    NSString *urlString2 = [NSString stringWithFormat:@"?%@",portStr];
    //    [self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:urlString2 relativeToURL:[NSURL fileURLWithPath:basePath2]]]];//带参数
    
    
    //    // 加载html地址不带参数 loadHTMLString
    //    NSString *htmlUrl = [NSString stringWithFormat:@"%@/login.html",basePath];
    //    NSLog(@"dayinzifuchuanmainbasePath: %@", htmlUrl);
    //    NSString *indexContent = [NSString stringWithContentsOfFile:htmlUrl encoding:NSUTF8StringEncoding error:nil];
    //    [self.webView loadHTMLString:indexContent baseURL:baseUrl];
    
    
    
    //    // 实例化 WKWebView 对象
    //    self.webView = [[WKWebView alloc] initWithFrame:self.view.bounds];
    //
    //    //创建请求
    //    NSURL *url = [NSURL URLWithString:@"https://www.baidu.com"];
    //    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    //    //加载网页
    //    [self.webView loadRequest:request];
    //    [self.view addSubview:self.webView];
    
    
        ------UIWebView
    //    CGFloat width = self.view.frame.size.width;
    //    CGFloat height = self.view.frame.size.height - 20;
    //    UIWebView *_webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 20, width, height)];
    //
    //    NSString *urlStr = @"http://www.baidu.com";
    //    NSURL *url = [NSURL URLWithString:urlStr];
    //    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    //    [_webView loadRequest:request];
    
}

#import <UIKit/UIKit.h>

#import <WebKit/WebKit.h>

@interface ViewController : UIViewController
@property (strong, nonatomic) WKWebView *webView;
//@property (weak, nonatomic) IBOutlet UIWebView *webView;

@end

刚使用mac 不习惯：

ctrl + 空格 切换输入法

command + c 复制 command + v 粘贴