simple UISegmentControl question

[yannickd60]

Hi,

I have a problem using UISegmentControl.

I want to calculate a formula, but the formula is different for men / women.

- (IBAction) calcWomen: (id) sender
{

int a = [weightTF.text intValue];
int b = [lenghtTF.text intValue];
int c = [ageTF.text intValue];
int cal = 655 + (9.6 * a) + (1.8 * b) - (4.7 * c);

totalTF.text = [NSString stringWithFormat:@"%i", cal];


}

- (IBAction) calcMen: (id) sender
{

int a = [weightTF.text intValue];
int b = [lenghtTF.text intValue];
int c = [ageTF.text intValue];
int cal = 655 + (9.6 * a) + (1.8 * b) - (4.7 * c);

totalTF.text = [NSString stringWithFormat:@"%i", cal];

}

How can I make one calculate button by using a UISegmentControl where you can choose between male of female?

I tried this, but then I need to declare cal again...

- (IBAction) changeSegment{
if (genSegment.selectedSegmentIndex == 0) {
int a = [weightTF.text intValue];
int b = [lenghtTF.text intValue];
int c = [ageTF.text intValue];
int cal = 66 + (13.7 * a) + (5 * b) - (6.8 * c);

}
if (genSegment.selectedSegmentIndex == 1) {
int a = [weightTF.text intValue];
int b = [lenghtTF.text intValue];
int c = [ageTF.text intValue];
int cal = 655 + (9.6 * a) + (1.8 * b) - (4.7 * c);
}

}


- (void) calc: (id) sender
{
totalTF.text = [NSString stringWithFormat:@"%i", cal];
}

[yannickd60]

Nobody?

It can't be that difficult?

[JasonR]

It's not clear what the problem is. But if I were you I would do it this way:

- (IBAction) changeSegment{
if (genSegment.selectedSegmentIndex == 0) {
    [self calcMen];
} else {
    [self calcWomen];
}

Just to keep it simpler.

[yannickd60]

Here is a screen capture of my view to make it more clear:


How do I have to connect the IBActions in IB then?

'change value' or 'touch up inside' for the UISegment control?
What IBactions must be connected to the calculate-button?

Thanks for the reply

[JasonR]

I would probably use it for "valueChanged" in the segmented Control, and "touchUp inside" for the button.

[yannickd60]

and which IBAction do I have to connect to the calculate-button??

Because you use both calc-actions in the UISegmentControl function?
When I use value changed the whole app crashes in simulator...

[JasonR]

calcMen and calcWomen really shouldn't be IBActions because there's no place I can see you want to do only one or the other. You might rename "changeSegment" to something like "doCalculate" because that's what it's for.

And I can't see anything you posted that should crash, so you'll need to specify what line is crashing and any messages you are getting.

[yannickd60]

Hi,

It works fine now by using only the UISegmentControl, but I still can't make use of the calculate-button.

The total value only changes when I switch from male to female or female to male.
I had in mind that it only calculates the total value depending on the UISegmenControl just by clicking the calculate button.

Thanks

[Batman]

Originally Posted by yannickd60

Hi,

It works fine now by using only the UISegmentControl, but I still can't make use of the calculate-button.

The total value only changes when I switch from male to female or female to male.
I had in mind that it only calculates the total value depending on the UISegmenControl just by clicking the calculate button.

Thanks

You don't even need an IBAction for the UISegmentControl, just an IBOutlet. Than in the buttons touchUpIniside action put the code

-(IBAction)yourButtonPressed {
      if (yourSegementControl.selectedSegmentIndex == 0) {
           [self calcMen];
    } else if (yourSegmentedControl.selectedSegmentIndex == 1) {
             [self calcWomen];
       }
}

Not tested, might be a few typos

[JasonR]

It looks like you would just use the same IBAction for the button. I don't see any reason why not.

[yannickd60]

Thank you for the replies!

It works perfect now...

The reason why it crashes was because of the "(id) sender" after the IBAction in the header file