The UIKit framework provides predefined gesture recognizers that detect common gestures. Gesture recognizers are objects that you attach to a view, which allows the view to respond to actions. In this tutorial we will display an image, which can be scaled up and down with the pinch gesture.This tutorial is made with Xcode 10 and built for iOS 12.

Open Xcode and create a new Single View App.

For product name, use IOSScaleImageTutorial  and then fill out the Organization Name and Organization Identifier with your customary values. Enter Swift as Language and choose Next.

We will need an image to scale, so download the following image, and move the image to the Assets folder in the project.

Go to the Storyboard and drag an Image View to the main View. Select the Image View and go to the Attributes Inspector. In the Image View section set the Image field to the downloaded image.

To resize the Image View to the dimensions of the image, select the image then go to the Editor menu and choose Size to Fit Content.

Next, drag a Pinch Gesture Recognizer on top of the Image View, this will attach the pinch gesture to our image. User Interaction is not enabled by default on an Image View, so select the Image View and go to the Attributes Inspector. In the View section enable the User Interface Enabled checkbox.

The Storyboard will look like this.

Open the Assistant editor and make sure the ViewController.swift file is visible next to the Storyboard. Ctrl-drag or right click-drag from the Image View to the ViewController class and create the following Outlet.

When the user starts a pinch gesture we need a callback method to handle the pinch and to alter the image. Ctrl-drag from the Pinch Gesture Recognizer to the ViewController class and create the following Action. Make sure the Type field is changed from Any to UIPinchGestureRecognizer.

Next, implement the scaleImage Action method

@IBAction func scaleImage(_ sender: UIPinchGestureRecognizer) { imageView.transform = CGAffineTransform(scaleX: sender.scale, y: sender.scale) }

Every view has a transform that is applied to it, this is information of the rotation,translation and scale that can be applied to the current view.The CGAffineTransform(scaleX: y:) function is used to scale the view's transform based on the gesture.

Build and Run the project on an iOS device instead of the Simulator, because it is a lot easier to do a pinch gesture on a real device. Try to scale the image back and forth using the pinch gesture.

Core Graphics is an API included in both Cocoa and Cocoa Touch. It allows you to draw graphic objects on the graphic destination. In this tutorial we will draw some basic shapes such as a rectangle or a circle. This tutorial is made with Xcode 10 and built for iOS 12.

Open Xcode and create a new Single View App.

For product name, use IOSDrawShapesTutorial and then fill out the Organization Name and Organization Identifier with your customary values. Enter Swift as Language and choose Next.

Go to the Storyboard and drag three Buttons from the Object Library to the top section of the main View. Align them horizontally and give them a title of "Lines, Rectangle, Circle". Drag a The Storyboard should look like this.

Select the image view and go to the Size Inspector. Enter the following values in the View section.

Select the "Resolve Auto Layout Issues" button on the bottom-right of the Interface Builder and choose "Add Missing Constraints"

Select each button and go to the Attributes Inspector. In the View section give the button from left to right a Tag value of 0,1 and 2. The tag field is needed later to determine which button is pressed.

Open The Assistant Editor and make sure the ViewController.swift file is visible. Ctrl And Drag from the "Lines" button to the ViewController class and create the following Action. make sure to change the Type from Any to UIButton.

Select the other buttons and Ctrl-drag to the IBAction method inside the ViewController class. Pressing each button will execute the IBAction method. The tag property of each button is used to choose the right method to draw the corresponding object.

@IBAction func buttonPressed(_ sender: UIButton) { switch sender.tag { case 0: drawLines() case 1: drawRectangle() case 2: drawCircle() default: print("default") } }

The UIGraphicsImageRenderer class was introduced in iOS 10 as a modern class which allows closures. It also support the wide color gamut of devices like the iPad Pro. Implement the drawing methods

func drawLines() { // 1 let renderer = UIGraphicsImageRenderer(size: CGSize(width: 280, height: 250)) let img = renderer.image { ctx in // 2 ctx.cgContext.move(to: CGPoint(x: 20.0, y: 20.0)) ctx.cgContext.addLine(to: CGPoint(x: 260.0, y: 230.0)) ctx.cgContext.addLine(to: CGPoint(x: 100.0, y: 200.0)) ctx.cgContext.addLine(to: CGPoint(x: 20.0, y: 20.0)) ctx.cgContext.setLineWidth(10) ctx.cgContext.setStrokeColor(UIColor.black.cgColor) // 3 ctx.cgContext.strokePath() } imageView.image = img } func drawRectangle() { let renderer = UIGraphicsImageRenderer(size: CGSize(width: 280, height: 250)) let img = renderer.image { ctx in let rectangle = CGRect(x: 0, y: 0, width: 280, height: 250) // 4 ctx.cgContext.setFillColor(UIColor.yellow.cgColor) ctx.cgContext.setStrokeColor(UIColor.gray.cgColor) ctx.cgContext.setLineWidth(20) // 5 ctx.cgContext.addRect(rectangle) ctx.cgContext.drawPath(using: .fillStroke) } imageView.image = img } func drawCircle() { let renderer = UIGraphicsImageRenderer(size: CGSize(width: 280, height: 250)) let img = renderer.image { ctx in let rect = CGRect(x: 5, y: 5, width: 270, height: 240) // 6 ctx.cgContext.setFillColor(UIColor.blue.cgColor) ctx.cgContext.setStrokeColor(UIColor.black.cgColor) ctx.cgContext.setLineWidth(10) ctx.cgContext.addEllipse(in: rect) ctx.cgContext.drawPath(using: .fillStroke) } imageView.image = img }

Create an image renderer that will draw images 

Draw some lines and set the line width to 10 and the line color to black..

The context’s graphics state are used to paint the path.

A yellow fill color and a grey stroke color with a width of 20 are defined.

The path including the rectangle is drawn.

The path including the ellipse is drawn.

 Build and Run and click on each button to draw the different shapes.

This tutorial shows how to draw circle with the Core Graphics Framework. The circles will be drawn in different sizes every time the user taps the screen. This tutorial is made with Xcode 10 and built for iOS 12.

Open Xcode and create a new Single View App.

For product name, use IOS12DrawCirclesTutorial and then fill out the Organization Name and Organization Identifier with your customary values. Enter Swift as Language and choose Next.

Select File -> New File -> iOS -> Cocoa Touch Class. Name the class CircleView with a subclass of UIView. This class will contain the views where the circles will be drawn.

In the CircleView class add the following init methods.

override init(frame: CGRect) { super.init(frame: frame) self.backgroundColor = UIColor.clear } required init(coder aDecoder: NSCoder) { fatalError("init(coder:) has not been implemented") }

The background color of the circle view is set to clear, so multiple circles can displayed on top of each other.The init:coder method is required for subclasses of UIView. Next, implement the drawRect method.

override func draw(_ rect: CGRect) { // Get the Graphics Context if let context = UIGraphicsGetCurrentContext() { // Set the circle outerline-width context.setLineWidth(5.0); // Set the circle outerline-colour UIColor.red.set() // Create Circle let center = CGPoint(x: frame.size.width/2, y: frame.size.height/2) let radius = (frame.size.width - 10)/2 context.addArc(center: center, radius: radius, startAngle: 0.0, endAngle: .pi * 2.0, clockwise: true) // Draw context.strokePath() } }

In the drawRect method some custom drawing can be performed. The outerline of the circle is red and has a width of 5. The width and height of the circle are centered. Finally, the circle is drawn. Now our CircleView class is finished, navigate to the ViewController.swift file. In the viewDidLoad method change the background color to lightgray.

override func viewDidLoad() { super.viewDidLoad() self.view.backgroundColor = UIColor.lightGray }

We need to create a view when the user touches on the screen, this can be done in the touchesBegan:withEvent method

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { for touch in touches { // Set the Center of the Circle // 1 let circleCenter = touch.location(in: view) // Set a random Circle Radius // 2 let circleWidth = CGFloat(25 + (arc4random() % 50)) let circleHeight = circleWidth // Create a new CircleView // 3 let circleView = CircleView(frame: CGRect(x: circleCenter.x, y: circleCenter.y, width: circleWidth, height: circleHeight)) view.addSubview(circleView) } }

The center of the circle is set to the location of the user's touch

the width(and height) of the circle is a random number between 25 and 75.

The circleView is allocated and added as subview to the main view.

Build and Run the project, touch the screen to draw multiple circles.

Apple exploring 360-degree full panoramic VR headset

“Apple is looking beyond augmented reality in the long run, as a new patent filing suggests the company has examined the potential of full virtual reality kits not just for product testing, but for consumers as well,” Mike Wuerthele reports for AppleInsider.

“Patent application 15/485,804 was made public on Wednesday, and addresses dynamic modification of images, to present it, and…

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استخدام استخدام برنامه‌نویس ارشد iOS (آقا‌/‌ ارومیه)

ما به یک برنامه نویس ارشد سیستم عامل iOS با توانایی بالا و آشنایی کامل با آخرین آپدیت های برنامه نویسی اپل نیازمندیم تا تمامی نیازهای شرکت در زمینه اپلیکیشن iOS رو برطرف کنه . همچنین جدیدترین ابزارها برای برنامه نویسی در اختیار شما قرار خواهد گرفت .

  مهارت های مورد نیاز :

تسلط بر Swift/Objective-C

توانایی کار با نقشه گوگل و سیستم های مکان یابی

آشنا با RestFul API و ارتباط با وب سرور

آشنایی کامل با : … ,iOS SDK: Core Animation, Core Data, Core Graphics

دارای روحیه کار تیمی

علاقه‌مندی و توانایی یادگیری سریع تکنولوژی‌های جدید 

دارای سابقه و نمونه کار در حوزه کاری

  شرایط کاری :

ساعات کاری از شنبه تا پنج شنبه ساعت ۸:۳۰ تا ۱۷ می باشد .

دِتال نام یک استارتاپ سفارش غذا در شهر ارومیه هست . شرکت ما برای گسترش فعالیت های خود و به روزرسانی مستمر اپلیکیشن دِتال در حال جمع آوری تیمی حرفه ای از برنامه نویسان تحت وب و موبایل در دفتر تهران می باشد .

The UIKit framework provides predefined gesture recognizers that detect common gestures. Gesture recognizers are objects that you attach to a view, which allows the view to respond to actions. In this tutorial we will display an image, which can be scaled up and down with the pinch gesture. This tutorial is made with Xcode 8.2.1 and built for iOS 10.2.

This tutorial is made with Xcode 8.2.1 and built for iOS 10.2.

For product name, use IOS10ScaleImagesTutorial and then fill out the Organization Name and Organization Identifier with your customary values. Enter Swift as Language and make sure only iPhone is selected in Devices.

We will need an image to scale, so download the following image, and add the image to the project. Select the Copy items if needed checkbox.

Go to the Storyboard and drag an Image View to the main View. Select the Image View and go to the Attributes Inspector. In the Image View section set the Image field to the downloaded image.

To resize the Image View to the dimensions of the image, select the image then go to the Editor menu and choose Size to Fit Content.

Next, drag a Pinch Gesture Recognizer on top of the Image View, this will attach the pinch gesture to our image. User Interaction is not enabled by default on an Image View, so select the Image View and go to the Attributes Inspector. In the View section enable the User Interface Enabled checkbox.

The Storyboard will look like this.

Open the Assistant editor and make sure the ViewController.swift file is visible next to the Storyboard. Ctrl-drag or right click-drag from the Image View to the ViewController class and create the following Outlet.

When the user starts a pinch gesture we need a callback method to handle the pinch and to alter the image. Ctrl-drag or right click-drag from the Pinch Gesture Recognizer to the ViewController class and create the following Action. Make sure the Type field is changed from Any to UIPinchGestureRecognizer.

Next, implement the scaleImage Action method

@IBAction func scaleImage(_ sender: UIPinchGestureRecognizer) { myImageView.transform = CGAffineTransform(scaleX: sender.scale, y: sender.scale) }

Every view has a transform that is applied to it, this is information of the rotation,translation and scale that can be applied to the current view.The CGAffineTransform(scaleX:, y:) function is used to scale the view's transform based on the gesture.

Build and Run the project on an iOS device instead of the Simulator, because it is a lot easier to do a pinch gesture on a real device. Try to scale the image back and forth using the pinch gesture.

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استخدام برنامه نویس iOS

پروژه ای که شما را به اوج میرساند!

اپلیکیشن پیام رسان (Messenger) – مانند تلگرام و واتس اپ – جزو معدود اپ هایی است که هم دانش فنی فراوانی می خواهد و هم از آخرین تکنولوژی ها در آن استفاده می گردد.

در تیم پیام رسان زیگزاگ ، فرصت ویژه ای پیدا می کنید که علاوه بر توسعه دانش خود، از حقوق و مزایای جذاب شرکت بهره مند شوید.

مهارت های لازم:

– تسلط بر Swift/Objective-C

– آشنایی با … ,iOS SDK:  Core Data, Core Animation, Core Graphics, Core Text

– آشنا با RESTful APIs و ارتباط با وب سرور

– منظم و با اراده جهت انجام پروژه  Enterprise 

– ارائه نمونه اپلیکیشن‌(های) اجرا شده 

تجربه پیاده‌سازی اپلیکیشن شبکه اجتماعی یا پیام رسان مزیت می باشد.

  اگر به دنبال کار ویژه ای هستید، رزومه خود را برای ما ارسال کنید!

زیگزاگ، پیام رسانی رایگان نظیر تلگرام می باشد. پیوسته در حال افزودن امکانات و ابزارهای جدید برای کاربران در آن هستیم. هدف ما ارائه اپلیکیشن در سطح برترین پیام رسان‌های دنیا است.

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استخدام برنامه نویس iOS

فرصت استثنایی برای برنامه نویسان:

با توجه به گستردگی دانش های لازم برای توسعه اپ پیام رسان زیگزاگ که مانند تلگرام و واتس اپ است ، فرصت ویژه ای پیدا می کنید که دانش فنی خود را بسیار بالا برده و از حقوق و مزایای جذاب شرکت بهره مند شوید.

مهارت های لازم:

– تسلط بر Swift/Objective-C

– آشنایی با iOS SDK  Core Data, Core Animation, Core Graphics and Core Text

– آشنا با RESTful APIs و ارتباط با وب سرور

– منظم و با اراده جهت انجام پروژه  Enterprise 

– ارائه نمونه اپلیکیشن‌(های) اجرا شده 

  تجربه پیاده‌سازی اپلیکیشن شبکه اجتماعی یا پیام رسان مزیت می باشد.

      اگر در خود توانایی انجام این پروژه را می بینید و به دنبال کار ویژه ای هستید، رزومه خود را برای ما ارسال کنید!

زیگزاگ، پیام رسانی رایگان نظیر تلگرام می باشد. پیوسته در حال افزودن امکانات و ابزارهای جدید برای کاربران در آن هستیم. هدف ما ارائه اپلیکیشن در سطح برترین پیام رسان‌های دنیا است.