update build tools

Author: naman14

Diff for: app/build.gradle

@@ -2,13 +2,13 @@ apply plugin: 'com.android.application'
 apply plugin: 'io.fabric'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.2"
+    compileSdkVersion rootProject.compileSdkVersion
+    buildToolsVersion rootProject.buildToolsVersion
 
     defaultConfig {
         applicationId "com.naman14.algovisualizer"
-        minSdkVersion 16
-        targetSdkVersion 25
+        minSdkVersion rootProject.minSdkVersion
+        targetSdkVersion rootProject.targetSdkVersion
         versionCode 3
         versionName "1.0"
     }
@@ -33,13 +33,13 @@ repositories {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:appcompat-v7:25.4.0'
-    compile 'com.android.support:design:25.4.0'
+    compile "com.android.support:appcompat-v7:$rootProject.supportLibraryVersion"
+    compile "com.android.support:design:$rootProject.supportLibraryVersion"
     compile 'com.roughike:bottom-bar:1.3.4'
     compile 'thereisnospon.codeview:codeview:0.3.1'
     compile 'com.anjlab.android.iab.v3:library:1.0.+'
     compile('com.crashlytics.sdk.android:crashlytics:2.6.5@aar') {
-        transitive = true;
+        transitive = true
     }
 
 

Diff for: build.gradle

@@ -3,11 +3,12 @@
 buildscript {
     repositories {
         jcenter()
+        google()
         maven { url 'https://maven.google.com' }
         maven { url 'https://maven.fabric.io/public' }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0-alpha6'
+        classpath 'com.android.tools.build:gradle:3.0.0-beta7'
         classpath 'io.fabric.tools:gradle:1.+'
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -17,10 +18,22 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
+        google()
         maven { url 'https://maven.google.com' }
     }
 }
 
 task clean(type: Delete) {
     delete rootProject.buildDir
 }
+
+ext {
+    // Sdk and tools
+    minSdkVersion = 21
+    targetSdkVersion = 26
+    compileSdkVersion = 26
+    buildToolsVersion = '26.0.2'
+
+    // App dependencies
+    supportLibraryVersion = '26.1.0'
+}

Diff for: 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-4.1-milestone-1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip