我的任务是提高 UIWebView 中网页加载的速度。为此，我将转向缓存概念。这里我使用 ASIWebPageRequest 来缓存网页的所有内容。它做得很好。但是当加载缓存的网页时，超链接不起作用（不与实时网址链接）？
和另一个。如果网页被缓存意味着它从缓存加载，否则从实时 url 加载。我该如何解决？
这是我的代码：
- (void)fetchURL:(NSURL *)url
{
[self setRequestsInProgress:[NSMutableArray array]];
[request setDelegate:nil];
[request cancel];
[self setRequest:[ASIWebPageRequest requestWithURL:url]];
[request setDidFailSelector:@selector(webPageFetchFailed:)];
[request setDidFinishSelector:@selector(webPageFetchSucceeded:)];
[request setDelegate:self];
[request setDownloadProgressDelegate:self];
[request setUrlReplacementMode:ASIReplaceExternalResourcesWithData];
[request setDownloadCache:[ASIDownloadCache sharedCache]];
[request setCachePolicy:ASIOnlyLoadIfNotCachedCachePolicy];
// This is actually the most efficient way to set a download path for ASIWebPageRequest, as it writes to the cache directly
[request setDownloadDestinationPath:[[ASIDownloadCache sharedCache] pathToStoreCachedResponseDataForRequest:request]];
[[ASIDownloadCache sharedCache] setShouldRespectCacheControlHeaders:NO];
[request startAsynchronous];
}
- (void)webPageFetchFailed:(ASIHTTPRequest *)theRequest
{
NSLog(@"fetch error = %@",[theRequest error]);
}
- (void)webPageFetchSucceeded:(ASIHTTPRequest *)theRequest
{
NSURL *baseURL;
if ([request isFinished] ) {
baseURL = [NSURL fileURLWithPath:[request downloadDestinationPath]];
// // If we're using ASIReplaceExternalResourcesWithLocalURLs, we must set the baseURL to point to our locally cached file
} else {
baseURL = [request url];
}
if ([theRequest downloadDestinationPath]) {
NSString *response = [NSString stringWithContentsOfFile:[theRequest downloadDestinationPath] encoding:[theRequest responseEncoding] error:nil];
[webView loadHTMLString:response baseURL:baseURL];
} else {
[webView loadHTMLString:[theRequest responseString] baseURL:baseURL];
}
}