Transparent Flutter background

[matthew-carroll]

Transparent Flutter background

[matthew-carroll]

Was done here: flutter/engine#6172

Still need to add splash color support

[dinozero]

I added FlutterViewController in a ViewController on top. I set background in Flutter which is transparent.
But I only see black color. It is perfect with iOS simulator, but with real device (iphone 5s) is not great.

[matthew-carroll]

FYI @dnfield

[dnfield]

Possible gpu related issue?

[dinozero]

Possible gpu related issue?

I don't know, I will try to test with iphone 6, 7.

[dnfield]

Can you share the code you're using to present the FlutterViewController?

[dinozero]

Can you share the code you're using to present the FlutterViewController?

I have a main view controller as image.
And I override viewDidLoad of that main view controller. I add View of FlutterViewController into Map View.
On simulator, It is perfect.

override func viewDidLoad() {
        super.viewDidLoad()
        
        mapView.isExclusiveTouch = false
        mapView.touchDelegate = self
        initFlutterViewController()

func initFlutterViewController() {
        flutterViewController = storyboard!.instantiateViewController(withIdentifier: "flutterview") as? FlutterViewController
        addChildViewController(flutterViewController)
        flutterViewController.view.translatesAutoresizingMaskIntoConstraints = false
        mapView.addSubview(flutterViewController.view)
        
        let horConstraint = NSLayoutConstraint(item: flutterViewController.view, attribute: .centerX, relatedBy: .equal,
                                               toItem: mapView, attribute: .centerX,
                                               multiplier: 1.0, constant: 0.0)
        let verConstraint = NSLayoutConstraint(item: flutterViewController.view, attribute: .centerY, relatedBy: .equal,
                                               toItem: mapView, attribute: .centerY,
                                               multiplier: 1.0, constant: 0.0)
        let widConstraint = NSLayoutConstraint(item: flutterViewController.view, attribute: .width, relatedBy: .equal,
                                               toItem: mapView, attribute: .width,
                                               multiplier: 1.0, constant: 0.0)
        let heiConstraint = NSLayoutConstraint(item: flutterViewController.view, attribute: .height, relatedBy: .equal,
                                               toItem: mapView, attribute: .height,
                                               multiplier: 1.0, constant: 0.0)
        
        mapView.addConstraints([horConstraint, verConstraint, widConstraint, heiConstraint])
        
        flutterViewController?.view.isOpaque = false
        flutterViewController?.view.isExclusiveTouch = false
        flutterViewController?.view.backgroundColor = UIColor.clear
        flutterViewController?.view.layer.backgroundColor = UIColor.clear.cgColor
        flutterViewController?.view.subviews.forEach{
            $0.isOpaque = false
            $0.backgroundColor = UIColor.clear
            $0.layer.backgroundColor = UIColor.clear.cgColor
        }
        
        flutterViewController?.splashScreenView.isOpaque = false
        flutterViewController?.splashScreenView.backgroundColor = UIColor.clear
        flutterViewController?.splashScreenView.layer.backgroundColor = UIColor.clear.cgColor
        GeneratedPluginRegistrant.register(with: flutterViewController!)
    }

// Main View Controller.

//Simulator iOS (iphone 5s 10.0)

[dinozero]

Possible gpu related issue?

I had same this problem with iphone 6.