Update the project to Android Studio 3 (NASAWorldWind#187)

* Updated the project to Android Studio 3
- Updated Gradle to version 4.1
- Updated the Android Plugin for Gradle to version 3.0.1
- Updated gradle.properties to use the new Android Studio defaults
- Removed obsolete android.buildToolsVersion Gradle properties
https://developer.android.com/studio/releases/gradle-plugin.html#3-0-0

* Removed Android SDK build tools from Travis CI configuration

* Restored Android SDK build tools to Travis CI configuration

* Corrected and updated WorldWind module dependencies
- Moved the WorldWind library module to API level 23, the intended target API level for WorldWind
- Updated the Android Support Libraries to the latest versions
- Updated the WorldWind Examples and Tutorials modules to API level 24, the minimum level required for the Android features used
- Updated the WorldWind Examples module to retrieve the latest Mission Command symbology renderer from JCenter, rather than a stale local copy

* Corrected the WorldWind Examples and Tutorials modules API level

* Added support for Java 8 language features
https://developer.android.com/studio/write/java8-support.html

.travis.yml

@@ -13,8 +13,8 @@ android:
   components:
     - platform-tools      # latest SDK platform-tools
     - tools               # latest SDK tools
-    - android-24          # SDK version used to compile the project
-    - build-tools-26.0.1  # build tools used by the project
+    - android-23          # SDK version used to compile the project
+    - build-tools-26.0.2  # minimum build tools required by Android Gradle plugin 3.0.1
     - extra-android-support
     - extra-android-m2repository
 

WorldWindAndroid.iml

@@ -8,7 +8,7 @@
       </configuration>
     </facet>
   </component>
-  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_7" inherit-compiler-output="true">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8" inherit-compiler-output="true">
     <content url="file://$MODULE_DIR$">
       <excludeFolder url="file://$MODULE_DIR$/.gradle" />
     </content>

build.gradle

@@ -2,18 +2,19 @@
 
 buildscript {
     repositories {
+        google()
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.3'
-
+        classpath 'com.android.tools.build:gradle:3.0.1'
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
     }
 }
 
 allprojects {
     repositories {
+        google()
         jcenter()
     }
 }

gradle.properties

@@ -5,14 +5,13 @@
 # any settings specified in this file.
 
 # For more details on how to configure your build environment visit
-# https://www.gradle.org/docs/current/userguide/build_environment.html
+# http://www.gradle.org/docs/current/userguide/build_environment.html
 
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
-# Default value: -Xmx10248m -XX:MaxPermSize=256m
-# org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
+org.gradle.jvmargs=-Xmx1536m
 
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit
-# https://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
-# org.gradle.parallel=true
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Fri Mar 03 16:11:43 PST 2017
+#Fri Dec 08 14:12:43 PST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip

worldwind-examples/build.gradle

@@ -1,12 +1,11 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 24
-    buildToolsVersion '26.0.1'
+    compileSdkVersion 23
     defaultConfig {
         applicationId 'gov.nasa.worldwindx.examples'
-        minSdkVersion 16
-        targetSdkVersion 24
+        minSdkVersion 23
+        targetSdkVersion 23
         versionCode 10
         versionName '0.8.0-SNAPSHOT'
     }
@@ -22,18 +21,15 @@ android {
         abortOnError false
         disable 'GradleDependency'
     }
-}
-
-repositories {
-    flatDir dirs: 'libs'
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
 }
 
 dependencies {
-    compile fileTree(include: ['*.jar'], dir: 'libs')
     compile project(':worldwind')
-    compile 'mil-sym-android:renderer:0.1.2@aar'
-    //maven-like dependency from flatDir repo; alternative: compile(name: 'renderer', ext: 'aar')
-    compile 'com.android.support:appcompat-v7:24.2.1'
-    compile 'com.android.support:design:24.2.1'
-    testCompile 'junit:junit:4.12'
+    compile 'com.android.support:appcompat-v7:23.4.0'
+    compile 'com.android.support:design:23.4.0'
+    compile 'mil.army.missioncommand:mil-sym-android-renderer:0.1.36'
 }

worldwind-tutorials/build.gradle

@@ -1,12 +1,11 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 24
-    buildToolsVersion '26.0.1'
+    compileSdkVersion 23
     defaultConfig {
         applicationId 'gov.nasa.worldwindx.tutorials'
-        minSdkVersion 16
-        targetSdkVersion 24
+        minSdkVersion 23
+        targetSdkVersion 23
         versionCode 10
         versionName '0.8.0-SNAPSHOT'
     }
@@ -22,12 +21,14 @@ android {
         abortOnError false
         disable 'GradleDependency'
     }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
 }
 
 dependencies {
-    compile fileTree(include: ['*.jar'], dir: 'libs')
     compile project(':worldwind')
-    testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:24.2.1'
-    compile 'com.android.support:design:24.2.1'
+    compile 'com.android.support:appcompat-v7:23.4.0'
+    compile 'com.android.support:design:23.4.0'
 }

worldwind/build.gradle

@@ -14,12 +14,10 @@ apply plugin: 'maven-publish'
 apply plugin: 'com.jfrog.artifactory'
 
 android {
-    compileSdkVersion 24
-    buildToolsVersion '26.0.1'
-
+    compileSdkVersion 23
     defaultConfig {
         minSdkVersion 16
-        targetSdkVersion 24
+        targetSdkVersion 23
         versionCode 10
         versionName '0.8.0-SNAPSHOT'
         testInstrumentationRunner 'android.support.test.runner.AndroidJUnitRunner'
@@ -42,12 +40,14 @@ android {
         abortOnError false
         disable 'GradleDependency'
     }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
 }
 
 dependencies {
-    compile 'com.android.support:support-annotations:24.+'
-    androidTestCompile 'com.android.support.test:runner:0.5'
-    androidTestCompile 'com.android.support.test:rules:0.5'
+    compile 'com.android.support:support-annotations:27.0.2'
     testCompile 'junit:junit:4.12'
     testCompile 'org.mockito:mockito-core:2.0.43-beta'
     // PowerMockito is required to mock static methods like Logger.log
@@ -59,6 +59,8 @@ dependencies {
         exclude module: 'hamcrest-core'
         exclude module: 'objenesis'
     }
+    androidTestCompile 'com.android.support.test:runner:1.0.1'
+    androidTestCompile 'com.android.support.test:rules:1.0.1'
 }
 
 publishing {