How to read image file at documents directory from ios webview

Question

I am downloading image file and write to documents directory like below:

NSArray   *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDo         


        

Answer 1

Instead of evaluating JavaScript, I just write down a placeholder in my html content, and replace it directly w/ the content needed:

NSString *htmlFilePath = [[NSBundle mainBundle] pathForResource:@"sample" ofType:@"html"];
NSString *htmlString = [NSString stringWithContentsOfFile:htmlFilePath encoding:NSUTF8StringEncoding error:&error];
if (error) {
  // handle error
  return;
}

NSString *imageFilePath = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject] stringByAppendingPathComponent:@"sample_image.png"];
NSURL *imageFileURL = [NSURL fileURLWithPath:imageFilePath];
NSString *sampleImageReplacement =
  [NSString stringWithFormat:@"", [imageFileURL absoluteString]];

// Replace the placeholder w/ real content,
//   and of course, we can also replace it w/ empty string
//   if the image cannot be found.
htmlString = [htmlString stringByReplacingOccurrencesOfString:@"%sample_image%"
                                                   withString:sampleImageReplacement];
...
[webView loadHTMLString:htmlString baseURL:nil];