这个问题困扰我好久了。终于搞好了。不容易啊。
首先介绍下这个问题，iOS上WebView 如果想更贴近native，就要加载新URL的时候新开个界面，但是如果加载的链接有重定向的话，就会在中间开一个空白的界面，这个好烦。然后就是解决这个问题，采用了很多办法。重定向的response的code是301，所以就向这个方向努力。首先在网上找到了一个方法。 原连接：http://blog.csdn.net/sheldongreen/article/details/7977802#
- (NSURLRequest *)connection:(NSURLConnection *)connection willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)response
- (void)viewDidLoad {
[super viewDidLoad];
NSURL *url = [NSURL URLWithString:@"http://www.google.com"];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
}
- (NSURLRequest *)connection:(NSURLConnection *)connection willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)response {
NSLog(@"will send request\n%@", [request URL]);
NSLog(@"redirect response\n%@", [response URL]);
return request;
}
这种最终没试过，但是运行起来是
====will send request====
http://www.google.com/
====redirect response====
(null)
====will send request====
http://www.google.com.hk/url?sa=p&hl=zh-CN&pref=hkredirect&pval=yes&q=http://www.google.com.hk/&ust=1347589441099727&usg=AFQjCNEsBYcrlh_jqpBWRwsc0NpBj2_lFg
====redirect response====
http://www.google.com/
====will send request====
http://www.google.com.hk/
====redirect response====
http://www.google.com.hk/url?sa=p&hl=zh-CN&pref=hkredirect&pval=yes&q=http://www.google.com.hk/&ust=1347589441099727&usg=AFQjCNEsBYcrlh_jqpBWRwsc0NpBj2_lFg
但是这种不确定是重定向还是界面内跳转，而且新开界面不太好做(有兴趣的可以试试)。
pass掉
然后朋友介绍了第二种方法，在http://stackoverflow.com上找到的。附上原连接http://stackoverflow.com/questions/13505889/how-to-get-redirected-url。
-(void)webViewDidStartLoad:(UIWebView *)webView
{
NSURL *url = [webView.request mainDocumentURL];
NSLog(@"The Redirected URL is: %@", url);
}
依然是同上的问题。 pass掉。
终于，还是找到第三个方法。http://stackoverflow.com/questions/1061364/how-do-i-get-the-last-http-status-code-from-a-uiwebview
这个的原理是它的原理是先请求 然后用webview加载
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{
if (navigationType != UIWebViewNavigationTypeOther) {
self.loadedURL = request.URL.absoluteString;
}
if (!isLoad && [request.URL.absoluteString isEqualToString:loadedURL]) {
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
if (connectionError || ([response respondsToSelector:@selector(statusCode)] && [((NSHTTPURLResponse *)response) statusCode] != 200 && [((NSHTTPURLResponse *)response) statusCode] != 302)) {
//Show error message
[self showErrorMessage];
}else {
isLoad = YES;
[self showPage:absoluteString query:nil];
}
}];
return NO;
}
isLoad = NO;
return YES;
}
//新开界面
-(void)showPage:(NSString *)url query:(NSString *)query
{
NSString * newUrl = [NSString stringWithFormat:@"%@", url];
if (query) {
newUrl = [NSString stringWithFormat:@"%@?%@", url,query];
}
JFWebViewController *webView = [[JFWebViewController alloc]init];
webView.webURL = newUrl;
[self.navigationController pushViewController:webView animated:YES];
}
- (void)viewWillAppear:(BOOL)animated
{
_isLoad = NO;
[super viewWillAppear:animated];
}
