Question

I have a table in which I want a dynamic image to load in at the left-hand side. The table needs to use an IF statement to select the appropriate image from the “Resources” folder, and needs to be based upon [dog types].

The [dog types] is extracted from an RSS feed, and so the image in the table cell needs to match the each cell’s [dog types] tag.

Update: See code below for what I’m looking to do (only below it’s for earthquakes, for me its pictures of dogs).

I suspect I need to use – (UIImage *)imageForTypes:(NSString *)types { to do such a thing.

Thanks.

Updated code: This is for Apple’s Earthquake sample but does exactly what I need to do. It matches images to the severity (2.0, 3.0, 4.0, 5.0 etc.) of every earthquake to the magnitude.

- (UIImage *)imageForMagnitude:(CGFloat)magnitude { 
    if (magnitude >= 5.0) {
        return [UIImage imageNamed:@"5.0.png"];
    }
    if (magnitude >= 4.0) {
        return [UIImage imageNamed:@"4.0.png"];
    }
    if (magnitude >= 3.0) {
        return [UIImage imageNamed:@"3.0.png"];
    }
    if (magnitude >= 2.0) {
        return [UIImage imageNamed:@"2.0.png"];
    }
    return nil;
}

and under – (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

magnitudeImage.image = [self imageForMagnitude:earthquake.magnitude];

Answer 1

The image is set in

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

You might want to have that method anyway, for brevity, but you just set the image as you would set a static one.

Edit: That is to say; in that particular method:

cell.imageView.image = [UIImage imageNamed:@"Dachshund"]; // Dachshund.jpg exists in the resources directory, of course.

Re-edit: To be even more precise:

// Assuming that a) [dog types] is "<name of dog type>" and;
// b) an image named "<name of dog type>.file_extension" exists in the resources of the project:
cell.image = [UIImage imageNamed:[[dog types] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]];
// No mapping of the string to image name is necessary if you know the
// set of strings that will be used for the feed.