先用
NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
判断一下当前的链接。
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response;
if ((([httpResponse statusCode]/100) ==
2)) {
// self.earthquakeData = [NSMutableData data];
[UIApplication sharedApplication].networkActivityIndicatorVisible =
YES;
[ webView loadRequest:[ NSURLRequest requestWithURL: myUrl ]];
webView.delegate =
self;
}
else {
NSDictionary *userInfo = [NSDictionary dictionaryWithObject:
NSLocalizedString(@"HTTP Error",
@"Error message displayed when receving a connection error.")
forKey:NSLocalizedDescriptionKey];
NSError *error = [NSError errorWithDomain:@"HTTP" code:[httpResponse statusCode] userInfo:userInfo];
if ([error code] == 404) {
NSLog(@"xx");
webView.hidden =
YES;
}
}
}