How to wait for user to click UILabel? - ios

Question

I want to make a while loop wait until a user clicks on a UILabel in a Swift Playground on Xcode. How can I do this?
Here's my loop
func gameLoop() {
while(score >= 0) {
let n = arc4random_uniform(3)
if(n == 0) {
opt1.text = rightStatements.randomElement()
opt2.text = wrongStatements.randomElement()
opt3.text = wrongStatements.randomElement()
} else if(n == 1) {
opt1.text = wrongStatements.randomElement()
opt2.text = rightStatements.randomElement()
opt3.text = wrongStatements.randomElement()
} else if(n == 2) {
opt1.text = wrongStatements.randomElement()
opt2.text = wrongStatements.randomElement()
opt3.text = rightStatements.randomElement()
}
}
}
For example, I want to wait until the user either clicks opt1, opt2, or opt3 Then do something based on what the user clicks.

Answer 1

Use Buttons instead of Labels and assign tag = 1, 2, and 3 for buttons. Create an IBAction function for the buttons and connect all the buttons to the same function.
Make variable 'n' as global.
var n = Int()
func nextAttempt() {
if(score >= 0) {
n = arc4random_uniform(3)
if(n == 0) {
opt1.text = rightStatements.randomElement()
opt2.text = wrongStatements.randomElement()
opt3.text = wrongStatements.randomElement()
} else if(n == 1) {
opt1.text = wrongStatements.randomElement()
opt2.text = rightStatements.randomElement()
opt3.text = wrongStatements.randomElement()
} else if(n == 2) {
opt1.text = wrongStatements.randomElement()
opt2.text = wrongStatements.randomElement()
opt3.text = rightStatements.randomElement()
}
}
else
{
//Score < 0
//Game Over
}
}
#IBAction func onButtonClick(_ sender: Any)
{
switch(sender.tag)
{
case 1:
if (n==0)
{
//Right button tapped
//Update score if you want
}
else
{
self.nextAttempt()
}
case 2:
if (n==1)
{
//Right button tapped
//Update score if you want
}
else
{
self.nextAttempt()
}
case 3:
if (n==2)
{
//Right button tapped
//Update score if you want
}
else
{
self.nextAttempt()
}
}
}
Hope this helps you!!