Fix icon switching on iPad (#1310)

The switching of icons didn't work on the iPad anymore (See
https://norden.social/@betamax65/110088664994961476). This might be a temporary
fix, depending on what caused the bug (which I couldn't determine). For now,
one icon in the set seemingly must have a complete iPad icon set, which is
achieved with the standard icon. Furthermore, an assert statement helps to
determine the problem with the icons. This statement won't be compiled into
release builds.

Signed-off-by: Paul Schuetz <pa.schuetz@web.de>

IceCubesApp/App/Tabs/Settings/IconSelectorView.swift

@@ -88,7 +88,10 @@ struct IconSelectorView: View {
           if icon.rawValue == Icon.primary.rawValue {
             UIApplication.shared.setAlternateIconName(nil)
           } else {
-            UIApplication.shared.setAlternateIconName(icon.appIconName)
+            UIApplication.shared.setAlternateIconName(icon.appIconName) { err in
+              guard let err else { return }
+              assertionFailure("\(err.localizedDescription) - Icon name: \(icon.appIconName)")
+            }
           }
         } label: {
           ZStack(alignment: .bottomTrailing) {

IceCubesApp/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -1,64 +1,284 @@
 {
 	"images": [
 		{
-      "filename" : "icon.png",
-      "idiom" : "universal",
-      "platform" : "ios",
-      "size" : "1024x1024"
+			"size": "60x60",
+			"expected-size": "180",
+			"filename": "180.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "iphone",
+			"scale": "3x"
 		},
 		{
-      "idiom" : "mac",
-      "scale" : "1x",
-      "size" : "16x16"
+			"size": "40x40",
+			"expected-size": "80",
+			"filename": "80.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "iphone",
+			"scale": "2x"
 		},
 		{
-      "idiom" : "mac",
-      "scale" : "2x",
-      "size" : "16x16"
+			"size": "40x40",
+			"expected-size": "120",
+			"filename": "120.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "iphone",
+			"scale": "3x"
 		},
 		{
-      "idiom" : "mac",
-      "scale" : "1x",
-      "size" : "32x32"
+			"size": "60x60",
+			"expected-size": "120",
+			"filename": "120.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "iphone",
+			"scale": "2x"
 		},
 		{
-      "idiom" : "mac",
-      "scale" : "2x",
-      "size" : "32x32"
+			"size": "57x57",
+			"expected-size": "57",
+			"filename": "57.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "iphone",
+			"scale": "1x"
 		},
 		{
-      "idiom" : "mac",
-      "scale" : "1x",
-      "size" : "128x128"
+			"size": "29x29",
+			"expected-size": "58",
+			"filename": "58.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "iphone",
+			"scale": "2x"
 		},
 		{
-      "idiom" : "mac",
-      "scale" : "2x",
-      "size" : "128x128"
+			"size": "29x29",
+			"expected-size": "29",
+			"filename": "29.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "iphone",
+			"scale": "1x"
 		},
 		{
-      "idiom" : "mac",
-      "scale" : "1x",
-      "size" : "256x256"
+			"size": "29x29",
+			"expected-size": "87",
+			"filename": "87.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "iphone",
+			"scale": "3x"
 		},
 		{
-      "idiom" : "mac",
-      "scale" : "2x",
-      "size" : "256x256"
+			"size": "57x57",
+			"expected-size": "114",
+			"filename": "114.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "iphone",
+			"scale": "2x"
 		},
 		{
-      "idiom" : "mac",
-      "scale" : "1x",
-      "size" : "512x512"
+			"size": "20x20",
+			"expected-size": "40",
+			"filename": "40.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "iphone",
+			"scale": "2x"
 		},
 		{
+			"size": "20x20",
+			"expected-size": "60",
+			"filename": "60.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "iphone",
+			"scale": "3x"
+		},
+		{
+			"size": "1024x1024",
+			"filename": "1024.png",
+			"expected-size": "1024",
+			"idiom": "ios-marketing",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"scale": "1x"
+		},
+		{
+			"size": "40x40",
+			"expected-size": "80",
+			"filename": "80.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "ipad",
+			"scale": "2x"
+		},
+		{
+			"size": "72x72",
+			"expected-size": "72",
+			"filename": "72.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "ipad",
+			"scale": "1x"
+		},
+		{
+			"size": "76x76",
+			"expected-size": "152",
+			"filename": "152.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "ipad",
+			"scale": "2x"
+		},
+		{
+			"size": "50x50",
+			"expected-size": "100",
+			"filename": "100.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "ipad",
+			"scale": "2x"
+		},
+		{
+			"size": "29x29",
+			"expected-size": "58",
+			"filename": "58.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "ipad",
+			"scale": "2x"
+		},
+		{
+			"size": "76x76",
+			"expected-size": "76",
+			"filename": "76.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "ipad",
+			"scale": "1x"
+		},
+		{
+			"size": "29x29",
+			"expected-size": "29",
+			"filename": "29.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "ipad",
+			"scale": "1x"
+		},
+		{
+			"size": "50x50",
+			"expected-size": "50",
+			"filename": "50.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "ipad",
+			"scale": "1x"
+		},
+		{
+			"size": "72x72",
+			"expected-size": "144",
+			"filename": "144.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "ipad",
+			"scale": "2x"
+		},
+		{
+			"size": "40x40",
+			"expected-size": "40",
+			"filename": "40.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "ipad",
+			"scale": "1x"
+		},
+		{
+			"size": "83.5x83.5",
+			"expected-size": "167",
+			"filename": "167.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "ipad",
+			"scale": "2x"
+		},
+		{
+			"size": "20x20",
+			"expected-size": "20",
+			"filename": "20.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "ipad",
+			"scale": "1x"
+		},
+		{
+			"size": "20x20",
+			"expected-size": "40",
+			"filename": "40.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "ipad",
+			"scale": "2x"
+		},
+		{
+			"size": "128x128",
+			"expected-size": "128",
+			"filename": "128.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
 			"idiom": "mac",
-      "scale" : "2x",
-      "size" : "512x512"
-    }
-  ],
-  "info" : {
-    "author" : "xcode",
-    "version" : 1
+			"scale": "1x"
+		},
+		{
+			"size": "256x256",
+			"expected-size": "256",
+			"filename": "256.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "mac",
+			"scale": "1x"
+		},
+		{
+			"size": "128x128",
+			"expected-size": "256",
+			"filename": "256.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "mac",
+			"scale": "2x"
+		},
+		{
+			"size": "256x256",
+			"expected-size": "512",
+			"filename": "512.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "mac",
+			"scale": "2x"
+		},
+		{
+			"size": "32x32",
+			"expected-size": "32",
+			"filename": "32.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "mac",
+			"scale": "1x"
+		},
+		{
+			"size": "512x512",
+			"expected-size": "512",
+			"filename": "512.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "mac",
+			"scale": "1x"
+		},
+		{
+			"size": "16x16",
+			"expected-size": "16",
+			"filename": "16.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "mac",
+			"scale": "1x"
+		},
+		{
+			"size": "16x16",
+			"expected-size": "32",
+			"filename": "32.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "mac",
+			"scale": "2x"
+		},
+		{
+			"size": "32x32",
+			"expected-size": "64",
+			"filename": "64.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "mac",
+			"scale": "2x"
+		},
+		{
+			"size": "512x512",
+			"expected-size": "1024",
+			"filename": "1024.png",
+			"folder": "Assets.xcassets/AppIcon.appiconset/",
+			"idiom": "mac",
+			"scale": "2x"
 		}
+	]
 }