9 Notes Desember 2021 - LAST OF NINE NOTES -

1.  Diffrence Color each of characters

This code to select different color in one label

@IBOutlet weak var label: UILabel!

...
        // diff color in character
        let text = "Sample text *"
        let range = (text as NSString).range(of: "*")
        let attributedString = NSMutableAttributedString(string:text)
        attributedString.addAttribute(NSAttributedString.Key.foregroundColor, value: UIColor.red , range: range)
        label.attributedText = attributedString

2.  Navigation Push after set present navigation

In First controller add rootViewController to active the next navigation

import UIKit

class FirstViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }

    @IBAction func action(_ sender: Any) {
        let vc = SeventhViewController()
        let navVC = UINavigationController(rootViewController: vc)
        navVC.isNavigationBarHidden = true
        present(navVC, animated: true, completion: nil)
    }
}

In second view controller you can navigate the push controller :)

class SecondViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }

    @IBAction func action(_ sender: Any) {
        let vc = SeventhViewController()
        let navVC = UINavigationController(rootViewController: vc)
        navVC.isNavigationBarHidden = true
        present(navVC, animated: true, completion: nil)
    }
}

Source: https://stackoverflow.com/a/52439874/8366535

3. Change color UISearchBar

this how to change color all in swift change search bar color all

    func setupNavigationBar() {
        let searchBar = UISearchBar()
        searchBar.frame = CGRect(x: 0, y: 0, width: view.frame.width, height: 44)
        searchBar.placeholder = "Searching.."
        searchBar.returnKeyType = UIReturnKeyType.default
        searchBar.layer.backgroundColor = UIColor.green.cgColor
        
        // border color in color border textfield / background
        searchBar.barTintColor = .blue
        
        // border color in color textfield
        let textFieldInsideSearchBar = searchBar.value(forKey: "searchField") as? UITextField
        textFieldInsideSearchBar?.textColor = .red
        textFieldInsideSearchBar?.backgroundColor = .green
        
        // add to view
        subView.addSubview(searchBar)
    }

Look like this image below. 

4. Using a Tap Gesture That Doesn't Interfere with a TableView in iOS

I got some error when I use tap dismiss keyboard and same time use didSelect cell. When use that gesture cannot tap cell when use gesture swift, and I finnaly found the solution is this blog

https://kakubei.github.io/2016/02/24/Tap-Gesture-and-TableView/

and this how my code fixing, when I use subview in view controller. the solution is just add this function into gesture

" tapHideKeyboard.cancelsTouchesInView = false "

    override func awakeFromNib() {
        super.awakeFromNib()
        setupSelector()
        
    }
        
      private func setupSelector() {        
        let tapHideKeyboard = UITapGestureRecognizer(target: self, action: #selector(didTapHideKeyboard))
        tapHideKeyboard.cancelsTouchesInView = false
        addGestureRecognizer(tapHideKeyboard)
    }

    @objc
    func didTapHideKeyboard() {
        if keySection == .personal {
            endEditing(true)
        }
        
    }        

5. Error when set delegate `weak`

Source Author

When I'll set weak var in delegate gat an error, so this is my solution for fix it. just add "AnyObject" it will be fixing that error. :)

//Before   

protocol ProtocolDelegate {
  // here func
}


var delegate: ProtocolDelegate? // when set `weak var` get error above


// After
protocol ProtocolDelegate: AnyObject {
  // here func
}
weak var delegate: ProtocolDelegate? 

6.  Set Priority in UIStackView

When use 3 component in one stack view example: button-label-button
You must set "content hugging priority" and  "content compression resistance priority " in size inspector

Set in label

Set in Right Button

- Before set priority

Before

- After set priority should be look like this

After

7.  Fixing warning constrain in debug area

First use this website to check what wrong in your constraint https://www.wtfautolayout.com/

(
    "<NSLayoutConstraint:0x60000015fc00 UIButton:0x7fa8bded6c20.height == 15   (active)>",
    "<NSLayoutConstraint:0x60000014ff20 V:|-(0)-[UIButton:0x7fa8bded6c20]   (active, names: '|':UIView:0x7fa8bded6ab0 )>",
    "<NSLayoutConstraint:0x60000014e710 V:[UIButton:0x7fa8bded6c20]-(0)-|   (active, names: '|':UIView:0x7fa8bded6ab0 )>",
    "<NSLayoutConstraint:0x60000014e6c0 UIStackView:0x7fa8b89250a0.height == 19   (active)>",
    "<NSLayoutConstraint:0x600000140500 'UISV-alignment' UILabel:0x7fa8bded65b0.bottom == UIView:0x7fa8bded6ab0.bottom   (active)>",
    "<NSLayoutConstraint:0x600000143070 'UISV-alignment' UILabel:0x7fa8bded65b0.top == UIView:0x7fa8bded6ab0.top   (active)>",
    "<NSLayoutConstraint:0x600000141040 'UISV-alignment' UILabel:0x7fa8bded60b0.bottom == UIStackView:0x7fa8b8925230.bottom   (active)>",
    "<NSLayoutConstraint:0x600000140eb0 'UISV-alignment' UILabel:0x7fa8bded60b0.top == UIStackView:0x7fa8b8925230.top   (active)>",
    "<NSLayoutConstraint:0x6000001428f0 'UISV-canvas-connection' UIStackView:0x7fa8b8925230.top == UILabel:0x7fa8bded65b0.top   (active)>",
    "<NSLayoutConstraint:0x600000140fa0 'UISV-canvas-connection' V:[UILabel:0x7fa8bded65b0]-(0)-|   (active, names: '|':UIStackView:0x7fa8b8925230 )>",
    "<NSLayoutConstraint:0x600000141bd0 'UISV-canvas-connection' UIStackView:0x7fa8b89250a0.top == UILabel:0x7fa8bded60b0.top   (active)>",
    "<NSLayoutConstraint:0x600000140870 'UISV-canvas-connection' V:[UILabel:0x7fa8bded60b0]-(0)-|   (active, names: '|':UIStackView:0x7fa8b89250a0 )>"
)

paste in the box what wrong contraint

paste here

You can see what wrong in your constraint

8. How to fixing "Comma" to change default "Dot" on keyboard

When change region in "Language and Region" button dot, in keyboard decimal was change to comma
this how to fixing in swift.

same question here  https://stackoverflow.com/questions/47419803/how-can-i-force-swift-decimal-pad-with-dot-instead-of-comma-regardless-of-locale?rq=1

Before

After

This a couple solution
- Change region to en_US https://support.apple.com/guide/iphone/change-the-language-and-region-iphce20717a3/ios

- Force change comma to dot in code 
- still don't have correct solution

9. Cannot find yourmodule or controler 

when I use the module VIP pettern use module and then I get this error

Cannot find 'MyViewModule' in scope

To fixing in your class change like this, add public before class

//Before
class SBInvestorDataModule: IModule {
.
.
.
//After
public class SBInvestorDataModule: IModule {
.
.
.

Handle height tableview auto height into cell
https://21zerixpm.medium.com/tableview-in-uitableviewcell-3c7cf123d969