Miscellaneous cleanup for the Android codebase:

- update gradle plugins versions
- add formatting rules for AndroidManifest and gradle build files
- cleanup java_godot_lib_jni

Note: logic was mostly moved around and no new logic/functionality was added.

platform/android/java/app/build.gradle

@@ -80,33 +80,33 @@ android {
         main {
             manifest.srcFile 'AndroidManifest.xml'
             java.srcDirs = [
-                    'src'
+                'src'
 //DIR_SRC_BEGIN
 //DIR_SRC_END
             ]
             res.srcDirs = [
-                    'res'
+                'res'
 //DIR_RES_BEGIN
 //DIR_RES_END
             ]
             aidl.srcDirs = [
-                    'aidl'
+                'aidl'
 //DIR_AIDL_BEGIN
 //DIR_AIDL_END
             ]
             assets.srcDirs = [
-                    'assets'
+                'assets'
 //DIR_ASSETS_BEGIN
 //DIR_ASSETS_END
             ]
         }
         debug.jniLibs.srcDirs = [
-                'libs/debug'
+            'libs/debug'
 //DIR_JNI_DEBUG_BEGIN
 //DIR_JNI_DEBUG_END
         ]
         release.jniLibs.srcDirs = [
-                'libs/release'
+            'libs/release'
 //DIR_JNI_RELEASE_BEGIN
 //DIR_JNI_RELEASE_END
         ]

platform/android/java/app/config.gradle

@@ -1,24 +1,24 @@
 ext.versions = [
-        androidGradlePlugin : '3.4.2',
-        compileSdk : 28,
-        minSdk : 18,
-        targetSdk : 28,
-        buildTools : '28.0.3',
-        supportCoreUtils : '28.0.0'
+    androidGradlePlugin: '3.6.0',
+    compileSdk         : 29,
+    minSdk             : 18,
+    targetSdk          : 29,
+    buildTools         : '29.0.1',
+    supportCoreUtils   : '28.0.0'
 
 ]
 
 ext.libraries = [
-        androidGradlePlugin : "com.android.tools.build:gradle:$versions.androidGradlePlugin",
-        supportCoreUtils : "com.android.support:support-core-utils:$versions.supportCoreUtils"
+    androidGradlePlugin: "com.android.tools.build:gradle:$versions.androidGradlePlugin",
+    supportCoreUtils   : "com.android.support:support-core-utils:$versions.supportCoreUtils"
 ]
 
 ext.getExportPackageName = { ->
-	// Retrieve the app id from the project property set by the Godot build command.
-	String appId = project.hasProperty("export_package_name") ? project.property("export_package_name") : ""
-	// Check if the app id is valid, otherwise use the default.
-	if (appId == null || appId.isEmpty()) {
-		appId = "com.godot.game"
-	}
-	return appId
+    // Retrieve the app id from the project property set by the Godot build command.
+    String appId = project.hasProperty("export_package_name") ? project.property("export_package_name") : ""
+    // Check if the app id is valid, otherwise use the default.
+    if (appId == null || appId.isEmpty()) {
+        appId = "com.godot.game"
+    }
+    return appId
 }

platform/android/java/build.gradle

@@ -24,7 +24,7 @@ ext {
     sconsExt = org.gradle.internal.os.OperatingSystem.current().isWindows() ? ".bat" : ""
 
     supportedAbis = ["armv7", "arm64v8", "x86", "x86_64"]
-    supportedTargets = ['release':"release", 'debug':"release_debug"]
+    supportedTargets = ['release': "release", 'debug': "release_debug"]
 
     // Used by gradle to specify which architecture to build for by default when running `./gradlew build`.
     // This command is usually used by Android Studio.
@@ -95,7 +95,7 @@ task zipCustomBuild(type: Zip) {
     doFirst {
         logger.lifecycle("Generating Godot custom build template")
     }
-    from(fileTree(dir: 'app', excludes: ['**/build/**', '**/.gradle/**', '**/*.iml']), fileTree(dir: '.', includes: ['gradle.properties','gradlew', 'gradlew.bat', 'gradle/**']))
+    from(fileTree(dir: 'app', excludes: ['**/build/**', '**/.gradle/**', '**/*.iml']), fileTree(dir: '.', includes: ['gradle.properties', 'gradlew', 'gradlew.bat', 'gradle/**']))
     include '**/*'
     archiveName 'android_source.zip'
     destinationDir(file(binDir))
@@ -133,20 +133,20 @@ task generateGodotTemplates(type: GradleBuild) {
  * Clean the generated artifacts.
  */
 task cleanGodotTemplates(type: Delete) {
-	// Delete the generated native libs
-	delete("lib/libs")
+    // Delete the generated native libs
+    delete("lib/libs")
 
-	// Delete the library generated AAR files
-	delete("lib/build/outputs/aar")
+    // Delete the library generated AAR files
+    delete("lib/build/outputs/aar")
 
-	// Delete the app libs directory contents
-	delete("app/libs")
+    // Delete the app libs directory contents
+    delete("app/libs")
 
-	// Delete the generated binary apks
-	delete("app/build/outputs/apk")
+    // Delete the generated binary apks
+    delete("app/build/outputs/apk")
 
-	// Delete the Godot templates in the Godot bin directory
-	delete("$binDir/android_debug.apk")
-	delete("$binDir/android_release.apk")
-	delete("$binDir/android_source.zip")
+    // Delete the Godot templates in the Godot bin directory
+    delete("$binDir/android_debug.apk")
+    delete("$binDir/android_release.apk")
+    delete("$binDir/android_source.zip")
 }

platform/android/java/gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-all.zip