Question

First I want to apologize for my lack of knowledge in programming in general. I am in the way of learning and have discovered that this site is a huge compliment for me of doing so.

I have created a program with three UITextField(thePlace,theVerb,theOutput) and two UITextView where one of the textviews(theOutput) take the text from the other textview(theTemplate) and replaces some strings with the text entered in the textfields.

When I click a button it triggers the method createStory that is listed below. This works fine with one exception. The text in the output only changes the string ‘number’ to the text in the textfield. However if I change the order in the method to replace ‘place’,’number’,’verb’ only the verb is changed, not the number.

Im sure this is some sort of easy fix but I can’t find it. Can some of you help me with my troubleshooting?

- (IBAction)createStory:(id)sender {
    theOutput.text=[theTemplate.text stringByReplacingOccurrencesOfString:@"<place>" withString:thePlace.text];
    theOutput.text=[theTemplate.text stringByReplacingOccurrencesOfString:@"<verb>" withString:theVerb.text];
    theOutput.text=[theTemplate.text stringByReplacingOccurrencesOfString:@"<number>" withString:theNumber.text];
}

Many thanks
// Emil

Answer 1

The problem is that you’re overwriting the contents of theOutput.text with each line; var1 = var2; overwrites the data in var1 and replaces it with the contents of var2.

Try this:

- (IBAction)createStory:(id)sender 
{
   NSString* tempStr = [theTemplate.text stringByReplacingOccurrencesOfString:@"<place>" withString:thePlace.text];
   tempStr = [tempStr stringByReplacingOccurrencesOfString:@"<verb>" withString:theVerb.text];
   theOutput.text = [tempStr stringByReplacingOccurrencesOfString:@"<number>" withString:theNumber.text];
}

Does this make sense? 🙂