9 Notes In May 2020

1. Error "Use of unresolved identifier 'YourFile.swift' "

Image 1.0

If you have error like "Use of unresolved identifier"  check in tab Show identifier inspektor  in Target membership and checklist that for fixing this error.

2. etc host setting on mac

sudo nano /etc/hosts
Password:: ********

------------ Example -------------

##

# Host Database

#

# localhost is used to configure the loopback interface

# when the system is booting.  Do not change this entry.

##

127.0.0.1       localhost

255.255.255.255 broadcasthost

::1             localhost

127.158.111.11 dirve-dave.me.com

127.158.121.10 koffice-dev.me.com

------------------------

ctrl+0 save
ctrl+x exit

source: https://setapp.com/how-to/edit-mac-hosts-file

3.  Custom Limit TagsListView

I try to limit tags list in  TagListView.swift 
for max is 4 tags, set in below onLongPress

 // On long press, deselect all tags except this one
        tagView.onLongPress = { [unowned self] this in
            self.tagViews.forEach {
                $0.isSelected = $0 == this
            }
        }
        
        //MARK: FIX ME HERE
        tagView.onTap = { [unowned self] this in
            var arrBool = [Bool]()
            self.tagViews.forEach {
                if $0.isSelected == true {
                    arrBool.append($0.isSelected)
                }
            }
            if arrBool.count < 5 {
                self.rearrangeViews()
                arrBool.removeAll()
            } else {
                self.tagViews.forEach {
                    if this == $0 {
                      $0.isSelected = false
                    }
                }
                arrBool.removeAll()
            }
        }

source github: https://github.com/ElaWorkshop/TagListView
edit in file:   https://github.com/ElaWorkshop/TagListView/blob/master/TagListView/TagListView.swift

4.  Make navigationBar transparent with extension

extension UINavigationBar {
    func makeTransparent(withTint tint: UIColor = .white) {
        isTranslucent = true
        backgroundColor = .clear
        barTintColor  = .clear
        setBackgroundImage(UIImage(), for: .default)
        tintColor = tint
        titleTextAttributes = [.foregroundColor: tint]
        shadowImage = UIImage()
    }
}

source: https://twitter.com/hellalmoussa/status/1270633115031965699?s=21

5. Blur image view with extension 

extension UIImageView {
    func blurred() -> UIImageView {
        let imgView = self
        let blurEffect = UIBlurEffect(style: UIBlurEffect.Style.dark)
        let blurEffectView = UIVisualEffectView(effect: blurEffect)
        blurEffectView.frame = imgView.bounds
        blurEffectView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
        imgView.addSubview(blurEffectView)
        return imgView
    }
}

6. GIT uncommit PR/MR (Pull Request / Merge Request)

In condition I try to unchange one  file to back last commit,
and how to use that look code below.

   git checkout origin/master -- path/to/file
  // git checkout <local repo name (default is origin)>/<branch name> -- path/to/file will checkout the particular file from the downloaded changes (origin/master).



   example:

   ($git checkout your_branch_want_to_change -- path/to/file)

    $git checkout origin/master -- 100DayOfSwift/Day29_Filter_Limit/LimitFilterViewController.swift

    $git add -A
    $git commit -m "uncommit one file"
    $git push origin feature/mynewfeature

If condition your PR/MR that can update your commit

Image 1.1

source: https://stackoverflow.com/a/28375437/8366535


 

7. Extension for UIApplication TopViewController

When you want your view controller or popup you call on top all viewcontroller 
use this extension.

 import UIKit

extension UIApplication {
    class func topViewController(controller: UIViewController? = UIApplication.shared.keyWindow?.rootViewController) -> UIViewController? {
        if let navigationController = controller as? UINavigationController {
            return topViewController(controller: navigationController.visibleViewController)
        }
        if let tabController = controller as? UITabBarController {
            if let selected = tabController.selectedViewController {
                return topViewController(controller: selected)
            }
        }
        if let presented = controller?.presentedViewController {
            return topViewController(controller: presented)
        }
        return controller
    }
}

 

8. Found error No such module 'Nimble' or 'Quick'

Try this solution, follow this image below

                                Image 1.2

                                Image 1.3

                                Image 1.4

Build again, for now that can be success,  or you can update pod Quick and Nimble

9. Extension Constommize UISearchBar (loading)

Make Circle loading in left side

extension UISearchBar {
    public var textField: UITextField? {
        if #available(iOS 13, *) {
            return searchTextField
        }
        let subViews = subviews.flatMap { $0.subviews }
        guard let textField = (subViews.filter { $0 is UITextField }).first as? UITextField else {
            return nil
        }
        return textField
    }

    var isLoading: Bool {
        get {
            return activityIndicator != nil
        } set {
            if newValue {
                if activityIndicator == nil {
                    let newActivityIndicator = UIActivityIndicatorView(style: .gray)
                    newActivityIndicator.color = UIColor.white
                    newActivityIndicator.startAnimating()
                    newActivityIndicator.backgroundColor = textField?.backgroundColor ?? UIColor.white
                    textField?.leftView?.addSubview(newActivityIndicator)
                    let leftViewSize = textField?.leftView?.frame.size ?? CGSize.zero
                    
                    newActivityIndicator.center = CGPoint(x: leftViewSize.width - newActivityIndicator.frame.width / 2,
                                                          y: leftViewSize.height / 2)
                    textField?.leftView = newActivityIndicator
                }
            } else {
                activityIndicator?.removeFromSuperview()
            }
        }
    }

}

example result test in simulator.

Image 1.5