Objective-C if-else or if-else if statement

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• fiftysixty Posts: 310Registered Users

  January 2012

  jonwizard;402445 said:

  I have both a UITextLabel and a UITextView occupying the same real estate, point-for-point in my view. I have an NSMutableArray allocated to populate the UITextLabel based on what the user taps in a table. I would also like to program the app to use the UITextView if and only if the user taps on one specific row. I think this can be accomplished with an if-else or if-else if statement, but I'm not sure. If that will work, I don't know what to put in the if part of the code. So far, I have this:
  
  if (qux == ??) {
  
  fooTextView.text = textString;
  
  } else {
  
  fooTextLabel.text = textString;
  
  }
  
  I don't know what to set the if statement to. I tried to set it to
  
  if (qux == the really long code containing the single array statement I want displayed as a UITextView)
  
  but that returned an error. Does anyone have a suggestion on how to get Xcode to recognize my single NSMutableArray table cell with the UITextView and not (also) with the UILabel? As of right now, the app builds but displays the text both in the UITextView, so it scrolls and does exactly what I want and also in the UILabel but is static and visible "underneath" the scrolling UITextView.
  
  Also, I'm using an NSMutable Array with initWithObjectAndKeys. In this special case that is the only one of its kind in my UITableView, I use a special key that is only used by this particular part of the array. Is it possible to set it up so it's something regarding:
  
  if (qux == NSMutableArray with the special key) {
  
  fooTextView.text = textString;
  
  } else {
  
  fooTextLabel.text = textString;
  
  }
  
  And should I be using an if-else if statement or just an if-else statement?

  You didn't really tell us that the "qux" in your code is, but here's how I'd go about doing things. If you know where in your table the one specific row is (it is fixed) then it's simply a matter of implementing
  
  

  
  - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
      if (indexPath.row == specificCellRow) {
          textView.hidden = NO;
          textView.text = @\"text\";
          textLabel.hidden = YES;
      } else {
          textLabel.hidden = NO;
          textLabel.text = @\"text\";
          textView.hidden = YES;
      }
  }
  

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• jonwizard Posts: 6New Users

  January 2012

  fiftysixty;402450 said:

  You didn't really tell us that the "qux" in your code is, but here's how I'd go about doing things. If you know where in your table the one specific row is (it is fixed) then it's simply a matter of implementing
  
  

  
  - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
      if (indexPath.row == specificCellRow) {
          textView.hidden = NO;
          textView.text = @\"text\";
          textLabel.hidden = YES;
      } else {
          textLabel.hidden = NO;
          textLabel.text = @\"text\";
          textView.hidden = YES;
      }
  }
  

  That's exactly what I was looking for. "qux" was the name of the array, but I guess that's irrelevant because the code needs to point to indexPath.row, not the array as whole?
  
  So, I threw that code in, but don't know what to change "specificCellRow" to. I played around with it for a few minutes, but everything I tried returned an error. I want it to point to cell #1 in the UITableView. If it's the same result via a different method, could it also point to that specific data in the array? The only problem with that is my NSMutableArray is set up as:
  
  array = [[NSMutableArray alloc] init];
  
  array addObject: [[NSMutableDictionary alloc] initWithObjectsAndKeys:@"Steve", @"name", @"Male", @"gender", nil];
  
  array addObject: [[NSMutableDictionary alloc] initWithObjectsAndKeys:@"Mike", @"name", @"Male", @"gender", nil];
  
  array addObject: [[NSMutableDictionary alloc] initWithObjectsAndKeys:@"Pete", @"name", @"Male", @"gender", nil];
  
  etc.

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• fiftysixty Posts: 310Registered Users

  January 2012

  jonwizard;402569 said:

  That's exactly what I was looking for. "qux" was the name of the array, but I guess that's irrelevant because the code needs to point to indexPath.row, not the array as whole?
  
  So, I threw that code in, but don't know what to change "specificCellRow" to. I played around with it for a few minutes, but everything I tried returned an error. I want it to point to cell #1 in the UITableView. If it's the same result via a different method, could it also point to that specific data in the array? The only problem with that is my NSMutableArray is set up as:
  
  array = [[NSMutableArray alloc] init];
  
  array addObject: [[NSMutableDictionary alloc] initWithObjectsAndKeys:@"Steve", @"name", @"Male", @"gender", nil];
  
  array addObject: [[NSMutableDictionary alloc] initWithObjectsAndKeys:@"Mike", @"name", @"Male", @"gender", nil];
  
  array addObject: [[NSMutableDictionary alloc] initWithObjectsAndKeys:@"Pete", @"name", @"Male", @"gender", nil];
  
  etc.

  indexPath.row is simply the row index number, starting from 0 if I remember correctly. If you table doesn't have sections, you don't have to worry about anything else. If you have sections, then the indexPath will have both the index of the section and the index of the cell in that section.

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• jonwizard Posts: 6New Users

  January 2012

  fiftysixty;402642 said:

  indexPath.row is simply the row index number, starting from 0 if I remember correctly. If you table doesn't have sections, you don't have to worry about anything else. If you have sections, then the indexPath will have both the index of the section and the index of the cell in that section.

  Fantastic, thanks for the help!

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