Button action changes with UIPickerView change

I might not be the best person to help you since I am still learning but your if statements don't appear to do anything so it can't evaluate to TRUE or FALSE. Your saying if ([options objectAtIndex:0]) that seems to be the first part but the part you are evaluating it to is not there. It does not look like a BOOL but I could be wrong.

Example.

Code:

BOOL car = TRUE;

if (car){
   NSLog@"It's a car";
}

Or what you have should be something like this. I am not infront of Xcode so it might be a little off.

Code:

if ([options objectAtIndex:0] isEqualToString:@"Yoda"]) {
    do something;
}

or

Code:

if (a > b){
    do something;
}

Your just kind of saying

Code:

if (a){
}

and I don't think that is a BOOL value in which case nothing will happen since you didn't tell it to do anything.

 

Instead of just "if" statements, try "if/else if" statements or even a "switch" statement.

 

Code:

if ([options objectAtIndex:0])

This is true if there is an object at index 0 of options, regardless of whether the user has selected that object or not.

What you actually want in that place is more along the lines of:

Code:

if ([options selectedRowInComponent:0] == 0)

The selectedRowInComponent: method will return what the user has selected. You have to specify component 0, because though your picker may not utilize it, some pickers have multiple components. IE, a time picker has one component for selecting the hour and a second component for selecting the minute.

Alternatively,

Code:

switch ([options selectedRowInComponent:0])
{
case 0: ...

would work pretty well.