Migration of shared_preferences to kotlin, upgraded flutter base repository.

packages/shared_preferences/shared_preferences/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.5.13
+
+* Migrated preferences functionality to utilize kotlin.
+
 ## 0.5.12+3
 
 * Check in windows/ directory for example/

packages/shared_preferences/shared_preferences/android/build.gradle

@@ -2,13 +2,15 @@ group 'io.flutter.plugins.sharedpreferences'
 version '1.0-SNAPSHOT'
 
 buildscript {
+    ext.kotlin_version = '1.3.50'
     repositories {
         google()
         jcenter()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.4.0'
+        classpath 'com.android.tools.build:gradle:3.5.0'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
 
@@ -28,9 +30,13 @@ allprojects {
 }
 
 apply plugin: 'com.android.library'
+apply plugin: 'kotlin-android'
 
 android {
     compileSdkVersion 29
+    sourceSets {
+        main.java.srcDirs += 'src/main/kotlin'
+    }
 
     defaultConfig {
         minSdkVersion 16
@@ -40,3 +46,7 @@ android {
         disable 'InvalidPackage'
     }
 }
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+}

packages/shared_preferences/shared_preferences/android/gradle.properties

@@ -1 +1,3 @@
 org.gradle.jvmargs=-Xmx1536M
+android.useAndroidX=true
+android.enableJetifier=true

packages/shared_preferences/shared_preferences/android/gradle/wrapper/gradle-wrapper.properties

@@ -2,4 +2,4 @@ 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-5.6.2-all.zip