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iOS Build a Weather App with Swift (Retired) Displaying Our Weather Data Connecting the UI to Our Model

Posted by Stephen Gehring
Stephen Gehring
11,203 Points

self.humidityLabel.text = "\(currentWeather.humidity)" renders Optional(0.82)

All my text labels are rendering the value wrapped in a Optional(0.82)?

2 Answers

Daniel Reedy
Daniel Reedy
25,284 Points

In the Current.swift class file you might have made some of the variables optional.

It should looks something like this:

// ... import stuff ...

struct Current {

  var currentTime: String?
  var temperature: Int // Make sure this isn't set as optional, no ? at the end
  var humidity: Double 
  var precipProbability: Double
  var summary: String
  var icon: UIImage?

  // ... rest of the implementation ...
}
Brock Ormond
Brock Ormond
7,176 Points
Brock Ormond
Brock Ormond
7,176 Points

If the variable is supposed to be optional, but you wanted to print the value if it had one then you need to '!' the variable first to just get the value...

self.humidityLabel.text = "(currentWeather.humidity!)"

although you'd want to wrap it in an if-statement in case it was nil.

Stephen Gehring
Stephen Gehring
11,203 Points

thank you for the "(currentWeather.humidity!)" example