iiiyu / MainThreadGuard

:guardsman: Tracking UIKit access on main thread

MainThreadGuard

Tracking UIKit access on main thread

[](https://travis-ci.org/Khoa Pham/MainThreadGuard)

Description

This is just a Swift port of PSPDFUIKitMainThreadGuard.m using swizzling on UIView extension

Usage

• Just import the framework

Features

• setNeedsLayout
• setNeedsDisplay
• setNeedsDisplayInRect:

Try accessing UIKit from another thread and MainThreadGuard will assert

class ViewController: UIViewController {

  override func viewDidLoad() {
    super.viewDidLoad()
    view.backgroundColor = UIColor.white

    let label = UILabel()
    view.addSubview(label)

    DispatchQueue.global(qos: DispatchQoS.QoSClass.background).async {
      label.text = "Setting text on background thread"
    }
  }
}

Installation

MainThreadGuard is available through CocoaPods. To install it, simply add the following line to your Podfile:

You should add this to Debug configuration only

pod "MainThreadGuard", git: 'https://github.com/onmyway133/MainThreadGuard', configurations: 'Debug'

Credit

Credit goes to PSPDFUIKitMainThreadGuard.m

Author

Khoa Pham, [e-mail]

License

MainThreadGuard is available under the MIT license. See the LICENSE file for more info.