今早进入公司打开App出现新的问题----用H5加载的页面出现了需要登录验证.
经过上网查证才知道是WebView页面重定向的导致.
介绍一下导致的原因:因为公司网络需要认证登录.
=================直接上图,贴代码=================
1、加载请求的方法---
- (void)loadData
{
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"%@%@",[DefaultsUserInfo shared].strMgrServeUrl,URL_HELP_FEEED]];
NSURLRequest *request = [[NSURLRequest alloc] initWithURL:url
cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
timeoutInterval:10];
[self.webView loadRequest:request];
NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionDataTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) { }];
//用于解决网络超时的问题
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(request.timeoutInterval * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[task cancel];
});
}
2、WebView常用的代理的方法
#pragma mark - UIWebViewDelegate
- (void)webViewDidStartLoad:(UIWebView *)webView;
- (void)webViewDidFinishLoad:(UIWebView *)webView;
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error;
以上三个方法的具体实现根据需求而定,这里不一一介绍了(懒得废话)
3、最重要却又容易忽略的方法
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType;
结合webViewDidFinishLoad:这里我贴出我的具体实现:
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
if (self.webViewDidFinishLoad)
{
self.webViewDidFinishLoad(YES);
}
if ([self.webView.request.URL.absoluteString containsString:@"about:blank"])
{
NSError *err;
[self webView:self.webView didFailLoadWithError:err];
}
}
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
if ([request.URL.absoluteString containsString:[DefaultsUserInfo shared].strMgrServeUrl] ||[request.URL.absoluteString containsString:@"about:blank"])
{
return YES;
}else {
NSURL *url = [NSURL URLWithString:@"about:blank"];
NSURLRequest *requestRedirect = [[NSURLRequest alloc] initWithURL:url
cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
timeoutInterval:10];
[self.webView loadRequest:requestRedirect];
return NO;
}
}
具体介绍:
可根据request.URL.absoluteString获取到当前request的URL是否是我们实际App中请求的地址,若是则可继续返回Yes,继续等待服务器响应;否则,利用空白页代替之前请求(之所以用空白页是因为其他不确定因素会详情其他元素,影响App可观性).
=================谢谢观赏~~~=================
空白页打开方式,可百度得知.
about:blank是打开浏览器空白页的命令。
about:blank
