SDK 28

app/build.gradle

@@ -1,11 +1,11 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 27
+    compileSdkVersion rootProject.compileSdkVersion
     defaultConfig {
         applicationId "com.ferfalk.simplesearchviewexample"
-        minSdkVersion 16
-        targetSdkVersion 27
+        minSdkVersion rootProject.minSdkVersion
+        targetSdkVersion rootProject.compileSdkVersion
         versionCode 1
         versionName "1.0"
 
@@ -26,9 +26,9 @@ android {
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
 
-    implementation 'com.android.support:appcompat-v7:27.1.1'
+    implementation "com.android.support:appcompat-v7:$supportLibraryVersion"
+    implementation "com.android.support:design:$supportLibraryVersion"
     implementation 'com.android.support.constraint:constraint-layout:1.1.3'
-    implementation 'com.android.support:design:27.1.1'
 
     implementation project(':simplesearchview')
 

build.gradle

@@ -7,11 +7,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.2.0'
-
-
-        // NOTE: Do not place your application dependencies here; they belong
-        // in the individual module build.gradle files
+        classpath 'com.android.tools.build:gradle:3.2.1'
     }
 }
 
@@ -25,3 +21,9 @@ allprojects {
 task clean(type: Delete) {
     delete rootProject.buildDir
 }
+
+ext {
+    compileSdkVersion = 28
+    minSdkVersion = 16
+    supportLibraryVersion = '28.0.0'
+}

simplesearchview/build.gradle

@@ -1,12 +1,12 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 27
+    compileSdkVersion rootProject.compileSdkVersion
     defaultConfig {
-        minSdkVersion 16
-        targetSdkVersion 27
+        minSdkVersion rootProject.minSdkVersion
+        targetSdkVersion rootProject.compileSdkVersion
         versionCode 1
-        versionName "1.0"
+        versionName "0.1.2"
 
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
@@ -26,9 +26,9 @@ android {
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
 
-    implementation 'com.android.support:appcompat-v7:27.1.1'
+    implementation "com.android.support:appcompat-v7:$supportLibraryVersion"
+    implementation "com.android.support:design:$supportLibraryVersion"
     implementation 'com.android.support.constraint:constraint-layout:1.1.3'
-    implementation 'com.android.support:design:27.1.1'
 
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'com.android.support.test:runner:1.0.2'