Simplify iOS UI test screenshot pipeline

docs/demos/pom.xml

@@ -19,8 +19,8 @@
 <module>common</module>
 </modules>
   <properties>
-    <cn1.plugin.version>7.0.208</cn1.plugin.version>
-    <cn1.version>7.0.208</cn1.version>
+    <cn1.plugin.version>7.0.209</cn1.plugin.version>
+    <cn1.version>7.0.209</cn1.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <java.version>1.8</java.version>
     <java-tests.version>11</java-tests.version>

scripts/ios/tests/HelloCodenameOneUITests.swift.tmpl

@@ -37,7 +37,7 @@ final class HelloCodenameOneUITests: XCTestCase {
     }
 
     private func captureScreenshot(named name: String) throws {
-        let shot = XCUIScreen.main.screenshot()
+        let shot = bestScreenshot()
 
         // Save into sandbox tmp (optional – mainly for local debugging)
         let pngURL = outputDirectory.appendingPathComponent("\(name).png")
@@ -52,6 +52,24 @@ final class HelloCodenameOneUITests: XCTestCase {
         emitScreenshotPayloads(for: shot, name: name)
     }
 
+    private func bestScreenshot() -> XCUIScreenshot {
+        let screenShot = XCUIScreen.main.screenshot()
+        let appShot = app.screenshot()
+        let screenBytes = screenShot.pngRepresentation.count
+        let appBytes = appShot.pngRepresentation.count
+
+        if appBytes > screenBytes && appBytes > 0 {
+            return appShot
+        }
+        if screenBytes == 0 && appBytes > 0 {
+            return appShot
+        }
+        if appBytes == 0 && screenBytes > 0 {
+            return screenShot
+        }
+        return screenBytes >= appBytes ? screenShot : appShot
+    }
+
     /// Wait for foreground + a short settle time
     private func waitForStableFrame(timeout: TimeInterval = 30, settle: TimeInterval = 1.2) {
         _ = app.wait(for: .runningForeground, timeout: timeout)