diff --git a/billing/build.gradle b/billing/build.gradle
new file mode 100644
index 000000000..07a5ce22d
--- /dev/null
+++ b/billing/build.gradle
@@ -0,0 +1,76 @@
+apply plugin: 'com.android.library'
+//apply plugin: 'com.github.dcendents.android-maven'
+group='com.gitee.tjbaobao'
+
+android {
+    compileSdkVersion rootProject.ext.android.compileSdkVersion
+    buildToolsVersion rootProject.ext.android.buildToolsVersion
+    packagingOptions {
+        pickFirst "lib/armeabi/libyuvutils.so"
+        pickFirst "lib/arm64-v8a/libyuvutils.so"
+        pickFirst "lib/armeabi-v7a/libyuvutils.so"
+        pickFirst "lib/armeabi/libyuvtools.so"
+        pickFirst "lib/arm64-v8a/libyuvtools.so"
+        pickFirst "lib/armeabi-v7a/libyuvtools.so"
+        exclude "lib/arm64-v8a/libmmcv_api_handgesture.so"
+        exclude "lib/arm64-v8a/libmmcv_api_express.so"
+        exclude "lib/arm64-v8a/libMediaEncoder.so"
+        exclude "lib/arm64-v8a/libarcore_sdk_c.so"
+        exclude "lib/arm64-v8a/libmediadecoder.so"
+        exclude "lib/arm64-v8a/libMediaMuxer.so"
+        exclude "lib/arm64-v8a/libarcore_sdk_jni.so"
+        exclude "lib/arm64-v8a/libMediaUtils.so"
+        exclude "lib/arm64-v8a/libcosmosffmpeg.so"
+
+    }
+
+    defaultConfig {
+        minSdkVersion rootProject.ext.android.minSdkVersion
+        targetSdkVersion rootProject.ext.android.targetSdkVersion
+        versionCode rootProject.ext.android.versionCode
+        versionName rootProject.ext.android.versionName
+        manifestPlaceholders = rootProject.ext.manifestPlaceholders
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation 'androidx.appcompat:appcompat:1.0.0'
+
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0'
+
+    //谷歌内购
+    api 'com.android.billingclient:billing:3.0.0'
+}
+
+task sourcesJar(type: Jar) {
+    classifier = 'sources'
+    from android.sourceSets.main.java.sourceFiles
+}
+
+artifacts {
+    archives sourcesJar
+}
+
+tasks.withType(Javadoc) {
+    options.addStringOption('Xdoclint:none', '-quiet')
+    options.addStringOption('encoding', 'UTF-8')
+    options.addStringOption('charSet', 'UTF-8')
+}