Question

In my application I need to capture image as well as save it on local library and on server using FTP. Now I need to follow a format for image name while saving it on the server. I am able to capture and save the image on local library. But I am unable to find any method to change the name of the Image. Suppose I need to rename it as Productname-UserId.png Is there any way? Kindly help.

Thank you.

Answer 1

UIImagePNGRepresentation(UIImage*) is likely what you’re looking for. You can save a UIImage as a PNG file in the Application Documents folder, then upload that to a server. The code to do this is quite trivial, so if you could post the code you’re trying to use, that would be helpful to understanding, and recommending a solution for you.

Here’s a short clipping from my code that does exactly this:

UIImage * image; // Some image you want to send

NSString * docDirWithSlash = [[self applicationDocumentsDirectory] stringByAppendingString:@"/"];
NSString * pngFile = [docDirWithSlash stringByAppendingString:file]; // <-- Change the string "file" to reflect the name you want.
[UIImagePNGRepresentation(image) writeToFile:pngFile atomically:YES];

// Send pngFile to the server here

Where applicationDocumentsDirectory looks like this:

- (NSString *) applicationDocumentsDirectory
{
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 

    NSString *documentsDirectoryPath = [paths objectAtIndex:0];
    return documentsDirectoryPath;
}