Question

I have an image (png) in the app document directory, which is a screenshot of a UIView. The image will be saved when user clicked a UIButton. I use stringByEvaluatingJavaScriptFromString to inject the image into a div in a UIWebView. The problem is when the app loads first, the correct image it added, but in run time the image is not changed, it only shows the image which was in the directory when loading. I tried cleaning the cache and etc but no use.

note
– the webview loads local html files
– I use arc

How can I add the correct image from the documentry directory to the webview. ?

UPDATE
it works fine on IOS 5.. issue is only on IOS 6..

Answer 1

i couldn’t find the technical issue behind this problem, but i fixed it by giving unique names every time I save the image file.

    NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
    int timeInter = [[NSDate date]timeIntervalSince1970];
    [userDefaults setInteger:timeInter forKey:WHEEL_NUMBER];
    NSNumber *newWheelKey = [userDefaults valueForKey:WHEEL_NUMBER];

I store the image with newWheelKey. delete the image folder when viewdiddisappear