MAC Os

Setup Pod on Mac

Install cocoapods with gem not with Homebrew

sudo gem install cocoapods

1	sudo gem install cocoapods

but first find stable version of gem and ruby if already installed then update gem

gem update --system

1	gem update --system

Install Ruby via RVM 1. Install RVM as per instructions or

curl -L https://get.rvm.io | bash -s -- --version latest

1	curl -L https://get.rvm.io \| bash -s -- --version latest

then

source ~/.rvm/scripts/rvm

1	source ~/.rvm/scripts/rvm

type rvm | head -n 1

1	type rvm \| head -n 1

If the output is: rvm is a function You may need to add “source ~/.rvm/scripts/rvm” to your ~/.bash_profile […]

shubham sharma February 2, 2022 Read More

MAC Os / iOS check network is connected or not

import CommonCrypto
import SystemConfiguration

...

public class NetworkReachability {
    
    public static func isConnectedToNetwork() -> Bool {
        var zeroAddress = sockaddr_in()
        zeroAddress.sin_len = UInt8(MemoryLayout<sockaddr_in>.size)
        zeroAddress.sin_family = sa_family_t(AF_INET)
        
        guard let defaultRouteReachability = withUnsafePointer(to: &zeroAddress, {
            $0.withMemoryRebound(to: sockaddr.self, capacity: 1) {
                SCNetworkReachabilityCreateWithAddress(nil, $0)
            }
        }) else {
            return false
        }
        
        var flags: SCNetworkReachabilityFlags = []
        if !SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) {
            return false
        }
        if flags.isEmpty {
            return false
        }
        
        let isReachable = flags.contains(.reachable)
        let needsConnection = flags.contains(.connectionRequired)
        
        return (isReachable && !needsConnection)
    }
    
}

import CommonCrypto

import SystemConfiguration

...

public class NetworkReachability {

public static func isConnectedToNetwork() -> Bool {

var zeroAddress = sockaddr_in()

zeroAddress.sin_len = UInt8(MemoryLayout<sockaddr_in>.size)

zeroAddress.sin_family = sa_family_t(AF_INET)

guard let defaultRouteReachability = withUnsafePointer(to: &zeroAddress, {

$0.withMemoryRebound(to: sockaddr.self, capacity: 1) {

SCNetworkReachabilityCreateWithAddress(nil, $0)

}

}) else {

return false

}

var flags: SCNetworkReachabilityFlags = []

if !SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) {

return false

}

if flags.isEmpty {

return false

}

let isReachable = flags.contains(.reachable)

let needsConnection = flags.contains(.connectionRequired)

return (isReachable && !needsConnection)

}

shubham sharma May 21, 2019 Read More

Swift on OS X. How to handle global mouse events?

You are correct about using addGlobalMonitorForEventsMatchingMask:handler: A simple example might look something like this: AppDelegate.swift

class AppDelegate: NSObject, NSApplicationDelegate {

    @IBOutlet weak var window: NSWindow!
    @IBOutlet var textLabel : NSTextField!
    var eventHandler : GlobalEventMonitor?
    var gecount : Int = 0

    func applicationDidFinishLaunching(aNotification: NSNotification) {

        eventHandler = GlobalEventMonitor(mask: .LeftMouseDownMask, handler: { (mouseEvent: NSEvent?) in
        self.gecount += 1
        self.textLabel.stringValue = "global event monitor: \(self.gecount)"
    })
    eventHandler?.start()
  }
}

class AppDelegate: NSObject, NSApplicationDelegate {

@IBOutlet weak var window: NSWindow!

@IBOutlet var textLabel : NSTextField!

var eventHandler : GlobalEventMonitor?

var gecount : Int = 0

func applicationDidFinishLaunching(aNotification: NSNotification) {

eventHandler = GlobalEventMonitor(mask: .LeftMouseDownMask, handler: { (mouseEvent: NSEvent?) in

self.gecount += 1

self.textLabel.stringValue = "global event monitor: \(self.gecount)"

})

eventHandler?.start()

}

GlobalEventMonitor.swift

public class GlobalEventMonitor {

    private var monitor: AnyObject?
    private let mask: NSEventMask
    private let handler: NSEvent? -> ()

    public init(mask: NSEventMask, handler: NSEvent? -> ()) {
        self.mask = mask
        self.handler = handler
    }

    deinit {
        stop()
    }

    public func start() {
        monitor = NSEvent.addGlobalMonitorForEventsMatchingMask(mask, handler: handler)
    }

    public func stop() {
        if monitor != nil {
            NSEvent.removeMonitor(monitor!)
            monitor = nil
        }
    }
}

public class GlobalEventMonitor {

private var monitor: AnyObject?

private let mask: NSEventMask

private let handler: NSEvent? -> ()

public init(mask: NSEventMask, handler: NSEvent? -> ()) {

self.mask = mask

self.handler = handler

}

deinit {

stop()

}

public func start() {

monitor = NSEvent.addGlobalMonitorForEventsMatchingMask(mask, handler: handler)

}

public func stop() {

if monitor != nil {

NSEvent.removeMonitor(monitor!)

monitor = nil

}

shubham sharma April 17, 2019 Read More

Drag and Drop using swift 4 on mac OS

class DropView: NSView {
    
    var filePath: String?
    let expectedExt = ["jpg", "png", "jpeg"]  //file extensions allowed for Drag&Drop (example: "jpg","png","docx", etc..)
    
    required init?(coder: NSCoder) {
        super.init(coder: coder)
        
        self.wantsLayer = true
        self.layer?.backgroundColor = NSColor.gray.cgColor
        
        registerForDraggedTypes([NSPasteboard.PasteboardType.URL, NSPasteboard.PasteboardType.fileURL])
    }
    
    override func draw(_ dirtyRect: NSRect) {
        super.draw(dirtyRect)
        // Drawing code here.
    }
    
    override func draggingEntered(_ sender: NSDraggingInfo) -> NSDragOperation {
        if checkExtension(sender) == true {
            self.layer?.backgroundColor = NSColor.blue.cgColor
            return .copy
        } else {
            return NSDragOperation()
        }
    }
    
    fileprivate func checkExtension(_ drag: NSDraggingInfo) -> Bool {
        guard let board = drag.draggingPasteboard.propertyList(forType: NSPasteboard.PasteboardType(rawValue: "NSFilenamesPboardType")) as? NSArray,
            let path = board[0] as? String
            else { return false }
        
        let suffix = URL(fileURLWithPath: path).pathExtension
        for ext in self.expectedExt {
            if ext.lowercased() == suffix {
                return true
            }
        }
        return false
    }
    
    override func draggingExited(_ sender: NSDraggingInfo?) {
        self.layer?.backgroundColor = NSColor.gray.cgColor
    }
    
    override func draggingEnded(_ sender: NSDraggingInfo) {
        self.layer?.backgroundColor = NSColor.gray.cgColor
    }
    
    override func performDragOperation(_ sender: NSDraggingInfo) -> Bool {
        guard let pasteboard = sender.draggingPasteboard.propertyList(forType: NSPasteboard.PasteboardType(rawValue: "NSFilenamesPboardType")) as? NSArray,
            let path = pasteboard[0] as? String
            else { return false }
        
        //GET YOUR FILE PATH !!!
        self.filePath = path
        Swift.print("FilePath: \(path)")
        
        return true
    }
}

class DropView: NSView {

var filePath: String?

let expectedExt = ["jpg", "png", "jpeg"] //file extensions allowed for Drag&Drop (example: "jpg","png","docx", etc..)

required init?(coder: NSCoder) {

super.init(coder: coder)

self.wantsLayer = true

self.layer?.backgroundColor = NSColor.gray.cgColor

registerForDraggedTypes([NSPasteboard.PasteboardType.URL, NSPasteboard.PasteboardType.fileURL])

}

override func draw(_ dirtyRect: NSRect) {

super.draw(dirtyRect)

// Drawing code here.

}

override func draggingEntered(_ sender: NSDraggingInfo) -> NSDragOperation {

if checkExtension(sender) == true {

self.layer?.backgroundColor = NSColor.blue.cgColor

return .copy

} else {

return NSDragOperation()

}

fileprivate func checkExtension(_ drag: NSDraggingInfo) -> Bool {

guard let board = drag.draggingPasteboard.propertyList(forType: NSPasteboard.PasteboardType(rawValue: "NSFilenamesPboardType")) as? NSArray,

let path = board[0] as? String

else { return false }

let suffix = URL(fileURLWithPath: path).pathExtension

for ext in self.expectedExt {

if ext.lowercased() == suffix {

return true

}

return false

}

override func draggingExited(_ sender: NSDraggingInfo?) {

self.layer?.backgroundColor = NSColor.gray.cgColor

}

override func draggingEnded(_ sender: NSDraggingInfo) {

self.layer?.backgroundColor = NSColor.gray.cgColor

}

override func performDragOperation(_ sender: NSDraggingInfo) -> Bool {

guard let pasteboard = sender.draggingPasteboard.propertyList(forType: NSPasteboard.PasteboardType(rawValue: "NSFilenamesPboardType")) as? NSArray,

let path = pasteboard[0] as? String

else { return false }

//GET YOUR FILE PATH !!!

self.filePath = path

Swift.print("FilePath: \(path)")

return true

}

shubham sharma April 16, 2019 Read More

Track mouse movement Mac

class ViewController: NSViewController {

    @IBOutlet weak var xview: NSView!

    override func viewDidLoad() {
        super.viewDidLoad()
        xview.wantsLayer = true
    }

    //1.
    var isPresentingSlideshow = false
    @IBAction func toggle(_ sender: Any) {

        if(isPresentingSlideshow) {
            isPresentingSlideshow = false
            xview.layer?.backgroundColor = NSColor.green.cgColor
            teardownTracking()
        }
        else {
            isPresentingSlideshow = true
            xview.layer?.backgroundColor = NSColor.red.cgColor
            setupTracking()
        }
    }

    //2.
    var trackingArea:NSTrackingArea?
    func setupTracking() {
        let area = NSTrackingArea(rect: xview.bounds, options: [.activeAlways,.mouseEnteredAndExited,.mouseMoved,.inVisibleRect]  , owner: self, userInfo: nil)
        xview.addTrackingArea(area)
        trackingArea = area
    }

    //3.
    func teardownTracking() {
        if let trackingArea = trackingArea {
            xview.removeTrackingArea(trackingArea)
            self.trackingArea = nil
            NSCursor.setHiddenUntilMouseMoves(false)
        }
    }

    //4.
    var cursorHideState = false
    override func mouseMoved(with event: NSEvent) {
        super.mouseMoved(with: event)

        if !cursorHideState {
            cursorHideState = true
            //5.
            DispatchQueue.main.asyncAfter(deadline: .now() + 2.0) {
                [weak self] in
                if let _ = self?.trackingArea {
                    NSCursor.setHiddenUntilMouseMoves(true)
                    self?.cursorHideState = false
                }
            }
        }
    }

}

class ViewController: NSViewController {

@IBOutlet weak var xview: NSView!

override func viewDidLoad() {

super.viewDidLoad()

xview.wantsLayer = true

}

//1.

var isPresentingSlideshow = false

@IBAction func toggle(_ sender: Any) {

if(isPresentingSlideshow) {

isPresentingSlideshow = false

xview.layer?.backgroundColor = NSColor.green.cgColor

teardownTracking()

}

else {

isPresentingSlideshow = true

xview.layer?.backgroundColor = NSColor.red.cgColor

setupTracking()

}

//2.

var trackingArea:NSTrackingArea?

func setupTracking() {

let area = NSTrackingArea(rect: xview.bounds, options: [.activeAlways,.mouseEnteredAndExited,.mouseMoved,.inVisibleRect] , owner: self, userInfo: nil)

xview.addTrackingArea(area)

trackingArea = area

}

//3.

func teardownTracking() {

if let trackingArea = trackingArea {

xview.removeTrackingArea(trackingArea)

self.trackingArea = nil

NSCursor.setHiddenUntilMouseMoves(false)

}

//4.

var cursorHideState = false

override func mouseMoved(with event: NSEvent) {

super.mouseMoved(with: event)

if !cursorHideState {

cursorHideState = true

//5.

DispatchQueue.main.asyncAfter(deadline: .now() + 2.0) {

[weak self] in

if let _ = self?.trackingArea {

NSCursor.setHiddenUntilMouseMoves(true)

self?.cursorHideState = false

}

What going on here is. Simple toggle action to flip between playing/not-playing state and reflect that in the color state. Adds a NSTrackingArea to the view. The owner is this view controller so it will receive the mouseMoved: event. The option .mouseMoved is required to set this up. Removes the tracking area from the view when the slide show […]

shubham sharma April 8, 2019 Read More

Swift Multi-Threading

1- The Main Queue 2- The Global Queue: 3- Custom Queues:

DispatchQueue.main.async {
   ...
}

DispatchQueue.main.async {

...

}

DispatchQueue.global(qos: .background).async {
...
}

DispatchQueue.global(qos: .background).async {

...

}

let concurrentQueue = DispatchQueue(label: "queuename", attributes: .concurrent)
concurrentQueue.sync {
...
}  <span style="font-family: inherit; font-size: inherit;"> </span>

let concurrentQueue = DispatchQueue(label: "queuename", attributes: .concurrent)

concurrentQueue.sync {

...

} <span style="font-family: inherit; font-size: inherit;"> </span>

highest priority 1- userInteractive : Work is virtually instantaneous. Similar to main thread. 2- userInitiated : Work is nearly instantaneous, such as a few seconds or less. 3- default: don’t use it usually , the type will be inferred by the system 4- utility: Work takes a few seconds to a few […]

shubham sharma April 6, 2019 Read More

Swift: Dictionary And Json operations

If you need to convert JSON string into a dictionary or a dictionary into JSON String

import Foundation

class JsonOperation {
    public static func toJsonStringFrom(dictionary: [String:Any]) -> NSString? {
        let jsonData = try! JSONSerialization.data(withJSONObject: dictionary)
        let jsonString = NSString(data: jsonData, encoding: String.Encoding.utf8.rawValue)
        return jsonString
    }
    public static func toJsonStringFrom(array: [String]) -> NSString? {
        let jsonData = try! JSONSerialization.data(withJSONObject: array)
        let jsonString = NSString(data: jsonData, encoding: String.Encoding.utf8.rawValue)
        return jsonString
    }
    static func toDictionaryFrom(string: String) -> [String: Any]? {
        if let data = string.data(using: .utf8) {
            do {
                return try JSONSerialization.jsonObject(with: data, options: []) as? [String: Any]
            } catch {
                print(error.localizedDescription)
            }
        }
        return nil
    }
}

import Foundation

class JsonOperation {

public static func toJsonStringFrom(dictionary: [String:Any]) -> NSString? {

let jsonData = try! JSONSerialization.data(withJSONObject: dictionary)

let jsonString = NSString(data: jsonData, encoding: String.Encoding.utf8.rawValue)

return jsonString

}

public static func toJsonStringFrom(array: [String]) -> NSString? {

let jsonData = try! JSONSerialization.data(withJSONObject: array)

let jsonString = NSString(data: jsonData, encoding: String.Encoding.utf8.rawValue)

return jsonString

}

static func toDictionaryFrom(string: String) -> [String: Any]? {

if let data = string.data(using: .utf8) {

do {

return try JSONSerialization.jsonObject(with: data, options: []) as? [String: Any]

} catch {

print(error.localizedDescription)

}

return nil

}

shubham sharma March 18, 2019 Read More

Mac OSx Common Code

get document dir

let paths = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.userDomainMask, true)

1	let paths = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.userDomainMask, true)

Browse File Dialog

@IBAction func browseFile(sender: AnyObject) {
        
        let dialog = NSOpenPanel();
        
        dialog.title                   = "Choose a .txt file";
        dialog.showsResizeIndicator    = true;
        dialog.showsHiddenFiles        = false;
        dialog.canChooseDirectories    = true;
        dialog.canCreateDirectories    = true;
        dialog.allowsMultipleSelection = false;
        //        dialog.allowedFileTypes        = ["txt"];
        
        if (dialog.runModal() == NSApplication.ModalResponse.OK) {
            let result = dialog.url // Pathname of the file
            
            if (result != nil) {
                let path = result!.path
                let fm = FileManager.default
                //Bundle.main.resourcePath!
                
                do {
                    let items = try fm.contentsOfDirectory(atPath: path)
                    for item in items {
                        if(item.lowercased().contains(".jpg") || item.lowercased().contains(".png")){
                           print("Found \(path)/\(item)")
                        }
                        
                    }
                } catch let ex{
                    print(ex)
                }
            }
        } else {
            // User clicked on "Cancel"
            return
        }
        
    }

@IBAction func browseFile(sender: AnyObject) {

let dialog = NSOpenPanel();

dialog.title = "Choose a .txt file";

dialog.showsResizeIndicator = true;

dialog.showsHiddenFiles = false;

dialog.canChooseDirectories = true;

dialog.canCreateDirectories = true;

dialog.allowsMultipleSelection = false;

// dialog.allowedFileTypes = ["txt"];

if (dialog.runModal() == NSApplication.ModalResponse.OK) {

let result = dialog.url // Pathname of the file

if (result != nil) {

let path = result!.path

let fm = FileManager.default

//Bundle.main.resourcePath!

do {

let items = try fm.contentsOfDirectory(atPath: path)

for item in items {

if(item.lowercased().contains(".jpg") || item.lowercased().contains(".png")){

print("Found \(path)/\(item)")

}

} catch let ex{

print(ex)

}

} else {

// User clicked on "Cancel"

return

}

Read Dir

var imagesList:[String] = []
let fm = FileManager.default 
let path =  Utility.getMediaUrlVideo()
do {
    let items = try fm.contentsOfDirectory(atPath: path) 
    for item in items {
        if(item.lowercased().contains(".jpg") || item.lowercased().contains(".png")){
            imagesList.append("\(path)/\(item)")
            print("Found \(path)/\(item)")
        }
        
    }
} catch let ex{
    print(ex)
}

var imagesList:[String] = []

let fm = FileManager.default

let path = Utility.getMediaUrlVideo()

do {

let items = try fm.contentsOfDirectory(atPath: path)

for item in items {

if(item.lowercased().contains(".jpg") || item.lowercased().contains(".png")){

imagesList.append("\(path)/\(item)")

print("Found \(path)/\(item)")

}

} catch let ex{

print(ex)

}

Add action to a button

Btn.target = self                
Btn.action = #selector( didTap )

@objc func didTap(sender: Any){
     
}

Btn.target = self

Btn.action = #selector( didTap )

@objc func didTap(sender: Any){

}

Grab Thubnail from video

do {
    let asset = AVURLAsset(url: URL(fileURLWithPath: "/Users/shubham/Biblingo/media/videos/HebrewApplicationDataHLLUSA001-VIDEO01S_Videos12122018144440.mp4"), options: nil)
    let imgGenerator = AVAssetImageGenerator(asset: asset)
    let cgImage:CGImage = try imgGenerator.copyCGImage(at: CMTimeMake(value: 0, timescale: 1), actualTime: nil)
        
    let destinationURL = URL(fileURLWithPath: "/Users/shubham/Biblingo/media/videos/HebrewApplicationDataHLLUSA001-VIDEO01S_Videos12122018144440.png")
    let nsImage = NSImage(cgImage: cgImage, size: NSSize(width: cgImage.width, height: cgImage.height))
    if nsImage.pngWrite(to: destinationURL, options: .withoutOverwriting) {
        print("File saved")
    }
        
}catch let ex {
    print(ex)
}

do {

let asset = AVURLAsset(url: URL(fileURLWithPath: "/Users/shubham/Biblingo/media/videos/HebrewApplicationDataHLLUSA001-VIDEO01S_Videos12122018144440.mp4"), options: nil)

let imgGenerator = AVAssetImageGenerator(asset: asset)

let cgImage:CGImage = try imgGenerator.copyCGImage(at: CMTimeMake(value: 0, timescale: 1), actualTime: nil)

let destinationURL = URL(fileURLWithPath: "/Users/shubham/Biblingo/media/videos/HebrewApplicationDataHLLUSA001-VIDEO01S_Videos12122018144440.png")

let nsImage = NSImage(cgImage: cgImage, size: NSSize(width: cgImage.width, height: cgImage.height))

if nsImage.pngWrite(to: destinationURL, options: .withoutOverwriting) {

print("File saved")

}

}catch let ex {

print(ex)

}

Get all supported screen resolutions on mac OSX Swift

var displayConfig: CGDisplayConfigRef = nil
let mainDisplayID = CGMainDisplayID()

var displayMode = CGDisplayCopyDisplayMode(mainDisplayID).takeRetainedValue()
var width = CGDisplayModeGetWidth(displayMode)
var height = CGDisplayModeGetHeight(displayMode)

print("current size: \(width)x\(height)\n")
print("available sizes:\n")

var modes = CGDisplayCopyAllDisplayModes(mainDisplayID, nil).takeRetainedValue()
let modesCount = CFArrayGetCount(modes) - 1

for i in 0...modesCount {
    var mode: CGDisplayModeRef = unsafeBitCast(CFArrayGetValueAtIndex(modes, i), CGDisplayModeRef.self)

    var width = CGDisplayModeGetWidth(mode)
    var height = CGDisplayModeGetHeight(mode)
    print("\t\(width)x\(height)\n")
}

var displayConfig: CGDisplayConfigRef = nil

let mainDisplayID = CGMainDisplayID()

var displayMode = CGDisplayCopyDisplayMode(mainDisplayID).takeRetainedValue()

var width = CGDisplayModeGetWidth(displayMode)

var height = CGDisplayModeGetHeight(displayMode)

print("current size: \(width)x\(height)\n")

print("available sizes:\n")

var modes = CGDisplayCopyAllDisplayModes(mainDisplayID, nil).takeRetainedValue()

let modesCount = CFArrayGetCount(modes) - 1

for i in 0...modesCount {

var mode: CGDisplayModeRef = unsafeBitCast(CFArrayGetValueAtIndex(modes, i), CGDisplayModeRef.self)

New Dev Point

Some problems explained

MAC Os

Setup Pod on Mac

MAC Os / iOS check network is connected or not

Swift on OS X. How to handle global mouse events?

Drag and Drop using swift 4 on mac OS

Track mouse movement Mac

Swift Multi-Threading

Swift: Dictionary And Json operations

Mac OSx Common Code