iOS h5与原生态混编

Posted 2022-12-10 Eric博客

h5与原生态混编，一般情况下是在VC中插入一个webview，在webview（网上第三方比较好的WKWebView网页视图）中加载h5的地址url，使用的功能大部分主要分为：

1、原生oc调用js 

在网页加载完成之后，在成功回调方法中：

- (void)webViewDidFinishLoad:(UIWebView *)webView
    NSString *jsStr = [NSString stringWithFormat:@"showAlert('%@')",@"在JS中Alert弹出的message"];
    [_webView stringByEvaluatingjavascriptFromString:jsStr];

或者用JavaScriptCore库

- (void)webViewDidFinishLoad:(UIWebView *)webView
    JSContext *context = [self.webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];
    NSString *textJS = @"showAlert('在JS中Alert弹出的message')";
    [context evaluateScript:textJS];

2、js调用原生oc 

使用JavaScriptCore库

- (void)webViewDidFinishLoad:(UIWebView *)webView
    JSContext *context = [webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];
    context[@"js_share"] = ^
        NSArray *arg = [JSContext currentArguments];
        if(arg && arg.count)
            JSValue *value = arg[0];
            NSString *string = value.toString;
            NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];
            NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil];
            [self shareButtonAction:dict];
        
    ;

 3、原生oc通过代理监听url

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
    NSLog(@"%@", request.URL);
    if([request.URL.absoluteString hasSuffix:@"/login"])
        LoginViewController *vc = [CommonMethod getVCFromNib:[LoginViewController class]];
        [self.navigationController pushViewController:vc animated:YES];
        [self.webView reload];
        return NO;
    

最后如何清除webview的缓存

//清除cookie
NSHTTPCookie *cookie;
NSHTTPCookieStorage *storage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
for (cookie in [storage cookies])
    [storage deleteCookie:cookie];


//清除UIWebView的缓存
[[NSURLCache sharedURLCache] removeAllCachedResponses];
NSURLCache * cache = [NSURLCache sharedURLCache];
[cache removeAllCachedResponses];
[cache setDiskCapacity:0];
[cache setMemoryCapacity:0];