In PHP I would do something like this:
function changeBgColor($boxColor,$color)
{
echo '<div id="'. $boxColor .'">'. $color .'</div>';
}
changeBgColor("box1","red");
But I haven't found a way to do this in Objective-C
I want to write out some code in Objective-C and be able to call a method to execute that code.
e.g. execute this code. But I want to change the boxColor and redColor when I call the method
boxColor.backgroundColor = [UIColor redColor];
You need to write a method like this:
- (void) changeBackgroundColorOfElement:(NSObject *) element toColour:(UIColor *) color {
if ([element respondsToSelector:@selector(backgroundColor)]) [element setBackgroundColor:color];
else if ([element respondsToSelector:@selector(tintColor)]) [element setTintColor:color];
}
that can be called by:
[self changeBackgroundColorOfElement:myLabel toColour:[UIColor blackColor]];
Or you can have the C method which you would call the same way as your PHP code:
void changeBackgroundColorOfElementToColour(NSObject *element, UIColor *color) {
if ([element respondsToSelector:@selector(backgroundColor)]) [element setBackgroundColor:color];
else if ([element respondsToSelector:@selector(tintColor)]) [element setTintColor:color];
}
here is a brief explanation on how to create a function in objective C :
- (void) exampleFunction: (int)x y:(int)y
{
do some stuff HERE, changing BG etc
}
you can call this function by :
[self exampleFunction:*TheValueOfX* y:*TheValueOfY*]
this is the basic way of creating a function and using it, there are other more complex things that you might want to read about.
