Update

Signed-off-by: Leo Ma <begeekmyfriend@gmail.com>

library/build.gradle

-apply plugin: 'com.android.library'
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
 
-android {
-    compileSdkVersion 26
-    buildToolsVersion "26.0.2"
-
-    defaultConfig {
-        minSdkVersion 21
-        targetSdkVersion 22
-        versionCode 1
-        versionName "1.9"
-
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
-        ndk {
-            abiFilters "armeabi-v7a", "arm64-v8a", "x86"
-        }
+buildscript {
+    repositories {
+        jcenter()
+        google()
     }
-    buildTypes {
-        release {
-            minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
-        }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.0.0'
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
     }
-    externalNativeBuild {
-        ndkBuild {
-            path 'src/main/cpp/Android.mk'
-        }
+}
+
+allprojects {
+    repositories {
+        jcenter()
+        google()
     }
 }
 
-dependencies {
-    compile fileTree(dir: 'libx264.libs', include: ['*.jar'])
-    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
-        exclude group: 'com.android.support', module: 'support-annotations'
-    })
-    compile 'com.android.support:appcompat-v7:26.1.0'
-    testCompile 'junit:junit:4.12'
+task clean(type: Delete) {
+    delete rootProject.buildDir
 }