update to Android Studio 3.1.2

MPChartExample/build.gradle

@@ -3,7 +3,7 @@ apply plugin: 'realm-android'
 
 android {
     compileSdkVersion 27
-    buildToolsVersion '26.0.2'
+    buildToolsVersion '27.0.3'
     defaultConfig {
         minSdkVersion 16
         targetSdkVersion 27
@@ -39,7 +39,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:3.1.2'
         //classpath 'io.realm:realm-gradle-plugin:0.88.2'
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files

MPChartLib/build.gradle

@@ -5,7 +5,7 @@ apply plugin: 'maven'
 
 android {
     compileSdkVersion 27
-    buildToolsVersion '26.0.2'
+    buildToolsVersion '27.0.3'
     // resourcePrefix 'mpcht'
     defaultConfig {
         minSdkVersion 9
@@ -34,11 +34,9 @@ repositories {
 }
 
 dependencies {
-    //compile fileTree(dir: 'libs', include: ['*.jar'])
-    //compile 'com.android.support:support-v4:19.+'
     //provided 'io.realm:realm-android:0.87.5' // "optional" dependency to realm-database API
-    testCompile 'junit:junit:4.12'
-    testCompile "org.mockito:mockito-core:1.10.19"
+    testImplementation 'junit:junit:4.12'
+    testImplementation "org.mockito:mockito-core:1.10.19"
 }
 
 android.libraryVariants.all { variant ->

build.gradle

@@ -1,25 +1,18 @@
-//task wrapper(type: Wrapper) {
-//    gradleVersion = '2.9'
-//}
-
 buildscript {
     repositories {
         jcenter()
         google()
     }
     dependencies {
         classpath "io.realm:realm-gradle-plugin:4.2.0"
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:3.1.2'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:2.0'
     }
 }
 
 allprojects {
     repositories {
         jcenter()
-        maven {
-            url 'https://maven.google.com/'
-            name 'Google'
-        }
+        google()
     }
 }

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Mon Nov 20 11:59:54 CET 2017
+#Wed Apr 25 08:04:33 CEST 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip