Question

Hello I have a html string, with tags for every image.

I can extract the url of every image, but what I want is to save those images in the device, and then replace each one’s image url with the corresponding path from my sandbox and then display them via UIWebView.

Any ideas how do I do that?

Thank you!

Answer 1

Well if you have the URL for an image, you can save it like this

NSData *imageData = [NSData dataWithContentsOfURL:[NSURL urlWithString:string]];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:@"MyFile"];
[imageData writeToFile:filePath atomically:YES];

To replace the URLs in the HTML string simply use the method

- (NSString *)stringByReplacingOccurrencesOfString:(NSString *)target
withString:(NSString *)replacement