Disable R8 full mode in android gradle projects (#4081)

This was causing issues like #4000

Author: shannah

maven/codenameone-maven-plugin/src/main/java/com/codename1/builders/AndroidGradleBuilder.java

@@ -120,6 +120,12 @@ public File getGradleProjectDirectory() {
     // A flag to indicate whether we should use 'implementation' or 'compile' for dependencies
     private boolean useArrImplementation = false;
 
+    // R8 configuration flags to control optimization behavior
+    // Setting disableR8FullMode=true puts R8 in compatibility mode (less aggressive optimization)
+    // which prevents issues with reflection-based code like CommonProgressAnimations
+    private boolean disableR8FullMode = true;
+    private boolean disableR8 = false;
+
     public static final String[] ANDROID_PERMISSIONS = new String[]{
             "android.permission.ACCESS_BACKGROUND_LOCATION",
             "android.permission.ACCESS_CHECKIN_PROPERTIES",
@@ -501,6 +507,10 @@ public boolean build(File sourceZip, final BuildRequest request) throws BuildExc
         // When using gradle 8 we need to strip kotlin files from user classes otherwise we get duplicate class errors
         stripKotlinFromUserClasses = useGradle8;
         useJava8SourceLevel = request.getArg("android.java8", ""+useJava8SourceLevel).equals("true");
+
+        // R8 configuration - disable full mode by default to prevent issues with reflection
+        disableR8 = request.getArg("android.disableR8", "false").equals("true");
+        disableR8FullMode = request.getArg("android.disableR8FullMode", "true").equals("true");
         if (useGradle8) {
             getGradleJavaHome(); // will throw build exception if JAVA17_HOME is not set
             MIN_GRADLE_VERSION = 8;
@@ -3770,6 +3780,15 @@ public void usesClassMethod(String cls, String method) {
             gradlePropertiesObject.setProperty("android.useAndroidX", "true");
             gradlePropertiesObject.setProperty("android.enableJetifier", "true");
         }
+
+        // Configure R8 optimization mode to prevent reflection issues
+        if (disableR8) {
+            gradlePropertiesObject.setProperty("android.enableR8", "false");
+            gradlePropertiesObject.setProperty("android.enableR8.libraries", "false");
+        } else if (disableR8FullMode) {
+            gradlePropertiesObject.setProperty("android.enableR8.fullMode", "false");
+        }
+
         try {
             FileOutputStream antPropertiesOutputStream = new FileOutputStream(gradlePropertiesFile);
             gradlePropertiesObject.store(antPropertiesOutputStream, "Gradle properties for android build generated by Codename One");