How to cache UIWebView page for all session

Question

I would like to load page first time from web and other time from cache when there is no change in page.

I have some problems with cache.

I paste this code in AppDelegate:

NSURLCache *sharedCache = [[NSURLCache alloc] initWithMemoryCapacity:20 * 1024 * 1024
                                                        diskCapacity:100 * 1024 * 1024
                                                            diskPath:nil];
[NSURLCache setSharedURLCache:sharedCache];

and this how I use request:

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:dataURLString] cachePolicy:NSURLRequestReturnCacheDataElseLoad timeoutInterval:2*60];

If I stay in app it works fine and page load from cache, but when I close my app and load it again, page load from web again. What I have to do, to load it from cache?

Answer 1

SDURLCache is a drop in replacement for NSURLCache but does save to disk on iOS 4 and above.

- (void)prepareCache {
    SDURLCache *cache = [[SDURLCache alloc] initWithMemoryCapacity:4 * 1024 * 1024
                                                      diskCapacity:20 * 1024 * 1024
                                                          diskPath:[SDURLCache defaultCachePath]];
    cache.minCacheInterval = 0;
    [NSURLCache setSharedURLCache:cache];
    NSLog(@"Cache is being logged to: %@", [SDURLCache defaultCachePath]);
}

MOre info can be found here: