Custom Activity Indicator

//

//  ViewController.swift

//  MyFirstApp

//

//  Created by Divakar on 19/10/17.

//  Copyright © 2017 Divakar. All rights reserved.

//

import UIKit

class ViewController: UIViewController {

    

    

    override func viewDidLoad() {

        super.viewDidLoad()

        // Do any additional setup after loading the view, typically from a nib.

        

        customActivityIndicatory(self.view, startAnimate: true)

        

        //hide activityIndicatorView

     //   customActivityIndicatory(self.view, startAnimate: false)

    }

    

    

    @discardableResult

    func customActivityIndicatory(_ viewContainer: UIView, startAnimate:Bool? = true) -> UIActivityIndicatorView {

        let mainContainer: UIView = UIView(frame: viewContainer.frame)

        mainContainer.center = viewContainer.center

        mainContainer.backgroundColor = hexStringToUIColor(hex: "#FFFFFF")

        mainContainer.alpha = 0.5

        mainContainer.tag = 789456123

        mainContainer.isUserInteractionEnabled = false

        

        let viewBackgroundLoading: UIView = UIView(frame: CGRect(x:0,y: 0,width: 80,height: 80))

        viewBackgroundLoading.center = viewContainer.center

        viewBackgroundLoading.backgroundColor = hexStringToUIColor(hex: "#444444")

        viewBackgroundLoading.alpha = 0.5

        viewBackgroundLoading.clipsToBounds = true

        viewBackgroundLoading.layer.cornerRadius = 15

        

        let activityIndicatorView: UIActivityIndicatorView = UIActivityIndicatorView()

        activityIndicatorView.frame = CGRect(x:0.0,y: 0.0,width: 40.0, height: 40.0)

        activityIndicatorView.activityIndicatorViewStyle =

            UIActivityIndicatorViewStyle.whiteLarge

        activityIndicatorView.center = CGPoint(x: viewBackgroundLoading.frame.size.width / 2, y: viewBackgroundLoading.frame.size.height / 2)

        if startAnimate!{

            viewBackgroundLoading.addSubview(activityIndicatorView)

            mainContainer.addSubview(viewBackgroundLoading)

            viewContainer.addSubview(mainContainer)

            activityIndicatorView.startAnimating()

        }else{

            for subview in viewContainer.subviews{

                if subview.tag == 789456123{

                    subview.removeFromSuperview()

                }

            }

        }

        return activityIndicatorView

    }

        func hexStringToUIColor (hex:String) -> UIColor {

            var cString:String = hex.trimmingCharacters(in: .whitespacesAndNewlines).uppercased()

    

            if (cString.hasPrefix("#")) {

                cString.remove(at: cString.startIndex)

            }

    

            if ((cString.characters.count) != 6) {

                return UIColor.gray

            }

    

            var rgbValue:UInt32 = 0

            Scanner(string: cString).scanHexInt32(&rgbValue)

    

            return UIColor(

                red: CGFloat((rgbValue & 0xFF0000) >> 16) / 255.0,

                green: CGFloat((rgbValue & 0x00FF00) >> 8) / 255.0,

                blue: CGFloat(rgbValue & 0x0000FF) / 255.0,

                alpha: CGFloat(1.0)

            )

        }

}

Homebrew and Carthage Intallation

Homebrew and Carthage Intallation 

To install Carthage and create Cartfile, Follow below step - 

A. Install Homebrew

Website :  https://brew.sh

1. Open terminal
2. Paste below code and enter - Command  :  /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
3. Enter, wait for while

B. Install Carthage

1. Download the latest “Carthage.pkg” from this website : https://github.com/Carthage/Carthage/releases, ( In my case - 0.26.2 )
2. Double-click Carthage.pkg to run the installer
3. Click Continue, select a location to install to, click Continue again, and finally click Install

Note : When you attempt to run the installer, you may see a message stating “Carthage.pkg can’t be opened because it is from an unidentified developer.” If so, Control-click the installer and choose Open from the context menu.

C. Check Carthage Version

1. Open Terminal & Hit this command - carthage version

D. Creating First Cartfile

A Cartfile is a simple text file that describes your project’s dependencies to Carthage, so it can determine what to install. Each line in a Cartfile states where to fetch a dependency from, the name of the dependency, and optionally, which version of the dependency to use. A Cartfile is the equivalent of a CocoaPods Podfile.

Navigate to the root directory of your project in Terminal (the directory that contains your .xcodeproj file) using the cd command:

cd ~/Path/To/Starter/Project

Create an empty Cartfile with the touch command:

touch Cartfile

And then open the file up in Xcode for editing:

open -a Xcode Cartfile

If you’re familiar with another text editor, like Vim, then feel free to use that instead. Don’t, however, use TextEdit to edit the file; with TextEdit it’s too easy to accidentally use so-called “smart quotes” instead of straight quotes, and they will confuse Carthage.

Add the following lines to the Cartfile and save it:

github "Alamofire/Alamofire" == 4.5

github "Alamofire/AlamofireImage" ~> 3.2

These two lines tell Carthage that your project requires Alamofire version 4.5, and the latest version of AlamofireImage that’s compatible with version 3.2.

For More - https://www.raywenderlich.com/165660/carthage-tutorial-getting-started-2

/////

 FOR SOCKET

Carthage

Add this line to your Cartfile:

github "socketio/socket.io-client-swift" ~> 13.0.0

Run carthage update --platform ios,macosx.

Add the Starscream and SocketIO frameworks to your projects and follow the usual Carthage process.

CocoaPods 1.0.0 or later

Create Podfile and add pod 'Socket.IO-Client-Swift':

use_frameworks!

target 'YourApp' do

    pod 'Socket.IO-Client-Swift', '~> 13.0.0'

end

Install pods:

$ pod install

Import the module:

Swift:

import SocketIO

Objective-C:

@import SocketIO;


Summary

1. Copy path pf your project

cd ~/Path/To/Starter/Project

2. Create an empty Cartfile with the touch command:

touch Cartfile

3. And then open the file up in Xcode for editing:

open -a Xcode Cartfile

4. Add the following lines to the Cartfile and save it:

add cart file like - github "Alamofire/Alamofire" == 4.5

5. Now, Install Carthage

carthage update --platform ios,macosx

AlertDialog with Textfield

*****

let alertController = UIAlertController(title: "Your Title", message: "Your Subtitle here", preferredStyle: UIAlertControllerStyle.alert)

        

        alertController.addTextField(configurationHandler: nil)

        

        let OKAction = UIAlertAction(title: "OK", style: UIAlertActionStyle.default) { (action) -> Void in

            

        }

        

        alertController.addAction(OKAction)

        present(alertController, animated: true, completion: nil)

******

       // IF DATA NULL, CALL YOUR METHOD

//        let OKAction = UIAlertAction(title: "OK", style: UIAlertActionStyle.default) { (action) -> Void in

//            let textfield = alertController.textFields![0]

//            if textfield.text?.characters.count == 0 {

//

//              //  self.askForNickname()

//            }

//            else {

//

//            }

Passing Data using Struct in between controller or method

We can pass value using "struct" in swift 3

1. Create a swift file in your project
2. Create a class in the swift file created like bellow

       class StructOperation {
         struct glovalVariable {
         static var userName = String();
        }
    }

3. Assing value to "static var userName" variable of " struct glovalVariable" in "StructOperation" class from First View Controller like

    @IBAction func btnSend(_ sender: Any) {
       StructOperation.glovalVariable.userName = "Enamul Haque";
      //Code Move to Sencon View Controller
    }

4. In destination view controller get value like bellow

    var username = StructOperation.glovalVariable.userName;