How to check document directory file your image is there or not

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

    NSString *documentsDirectory = [paths objectAtIndex:0]; // Get documents folder

    NSString *imagePath = [documentsDirectory stringByAppendingPathComponent:@"/progress/before.png"];

  if (![[NSFileManager defaultManager] fileExistsAtPath:imagePath])

    {

       //file not exits in Document Directories

        imageviewname.image = [UIImage imageNamed:@"add_photo_block_hires.png"];

    }

    else

    {

        //file exist in Document Directories

         imageviewname.image =[UIImage imageWithContentsOfFile:imagePath1];

    }