How can I change tab bar font in swift 3

Question

1.00/5 (2 votes)

See more:

hi my friend. i am new in swift and ios.
i want change my tab bar font in swift 3 and xcode 8.

but i have problem.

i write this code in "AppDelegate.swift" in method "func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool :"

UITabBarItem.appearance().setTitleTextAttributes([NSFontAttributeName: UIFont(name: "IRANSansWeb.ttf", size: 10)!], for: .normal)

but i have this error:

fatal error: unexpectedly found nil while unwrapping an Optional value
(lldb)

what is the solution???

What I have tried:

UITabBarItem.appearance().setTitleTextAttributes([NSFontAttributeName: UIFont(name: "IRANSansWeb.ttf", size: 10)!], for: .normal)

Posted 4-Jul-17 8:03am

Mohammad Hasanpoor

Updated 5-Jul-17 2:40am

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

KarstenK · Answer 1 · 2017-07-05T02:40:00

Solution 1

Create the Font before the UITabBarItem call. I guess it is nil, because the Font is nil because it is mispelled.

Try to understand the error messages in detail.

Posted 5-Jul-17 2:40am

KarstenK

Comments

Mohammad Hasanpoor 5-Jul-17 16:06pm

but i created the font.
i told.
i am new in swift. i try but i can not understand the error.