upgrade build tools

Author: tiann

VirtualApp/app/build.gradle

@@ -22,8 +22,8 @@ android {
         }
     }
 
-    compileSdkVersion 26
-    buildToolsVersion '26.0.2'
+    compileSdkVersion 28
+    buildToolsVersion '28.0.3'
     defaultConfig {
         applicationId "io.va.exposed"
         minSdkVersion 21

VirtualApp/build.gradle

@@ -12,8 +12,8 @@ buildscript {
         }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
-        classpath 'com.android.tools.build:gradle-experimental:0.11.0'
+        classpath 'com.android.tools.build:gradle:3.2.1'
+        classpath 'com.android.tools.build:gradle-experimental:0.11.1'
         // We recommend changing it to the latest version from our changelog:
         // https://docs.fabric.io/android/changelog.html#fabric-gradle-plugin
         classpath 'io.fabric.tools:gradle:1.+'

VirtualApp/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Sun Nov 19 13:36:42 CST 2017
+#Mon Oct 29 11:05:44 CST 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-4.6-all.zip

VirtualApp/lib/build.gradle

@@ -8,8 +8,8 @@ if (localProp.exists()) {
 def exposedVersion = properties.getProperty("exposed.version") ?: "0.3.5"
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.2'
+    compileSdkVersion 28
+    buildToolsVersion '28.0.3'
 
     defaultConfig {
         minSdkVersion 21