iOS模拟器不会将图层渲染为真实设备

Question

On my iOS app I use a Google Maps view with a GMSLayer, the transparency renders correctly on a real device but the background is white on Simulator, I can't make the screenshots for the App Store...

And this is the code I use :

// Implement GMSTileURLConstructor
    // Returns a Tile based on the x,y,zoom coordinates, and the requested floor

    let urls: GMSTileURLConstructor = {(x, y, zoom) in
        let url = "http://wxs.ign.fr/[KEY]/geoportail/wmts?LAYER=TRANSPORTS.DRONES.RESTRICTIONS&FORMAT=image/png&SERVICE=WMTS&VERSION=1.0.0&REQUEST=GetTile&STYLE=normal&TILEMATRIXSET=PM&TILEMATRIX=" + String(zoom) + "&TILEROW="+String(y)+"&TILECOL="+String(x)
        return URL(string: url)
    }

    // Create the GMSTileLayer

    let layer = GMSURLTileLayer(urlConstructor: urls)

    layer.zIndex = 0
    layer.map = mapView

class TestTileLayer: GMSSyncTileLayer {
override func tileFor(x: UInt, y: UInt, zoom: UInt) -> UIImage {

    let url = URL(string : "http://wxs.ign.fr/[KEY]/geoportail/wmts?LAYER=TRANSPORTS.DRONES.RESTRICTIONS&FORMAT=image/png&SERVICE=WMTS&VERSION=1.0.0&REQUEST=GetTile&STYLE=normal&TILEMATRIXSET=PM&TILEMATRIX=" + String(zoom) + "&TILEROW="+String(y)+"&TILECOL="+String(x))

    return UIImage(data: try! Data(contentsOf: url!))!
}
}

I'm sure the image given by the URL uses transparency and I tried to manually change the white pixel to transparent but it doesn't change anything...

Answer 1

This is a simulator problem only it has been mentioned here .

However as @a.munzer suggested some work around you can take a screenshot from a real device and just edit it, shouldn't be that much of a problem.