diff --git a/downloadutil/build.gradle b/downloadutil/build.gradle
index 68eb9ad5..5bbfce46 100644
--- a/downloadutil/build.gradle
+++ b/downloadutil/build.gradle
@@ -1,9 +1,5 @@
 apply plugin: 'com.android.library'
 
-//apply plugin: 'com.github.dcendents.android-maven'
-//
-//group='com.github.AriaLyy'
-
 android {
   compileSdkVersion 23
   buildToolsVersion "23.0.2"
@@ -27,59 +23,4 @@ dependencies {
   testCompile 'junit:junit:4.12'
   compile 'com.android.support:appcompat-v7:23.1.1'
 }
-//apply from: 'jcenter.gradle'
-
-// build a jar with source files
-//task sourcesJar(type: Jar) {
-//  from android.sourceSets.main.java.srcDirs
-//  classifier = 'sources'
-//}
-//
-//task javadoc(type: Javadoc) {
-//  failOnError  false
-//  source = android.sourceSets.main.java.sourceFiles
-//  classpath += project.files(android.getBootClasspath().join(File.pathSeparator))
-//  classpath += configurations.compile
-//}
-//
-//// build a jar with javadoc
-//task javadocJar(type: Jar, dependsOn: javadoc) {
-//  classifier = 'javadoc'
-//  from javadoc.destinationDir
-//}
-//
-//android.libraryVariants.all { variant ->
-//  println variant.javaCompile.classpath.files
-//  if (variant.name == 'release') {
-//    //我们只需 release 的 javadoc
-//    task("generate${variant.name.capitalize()}Javadoc", type: Javadoc) {
-//      // title = ''
-//      // description = ''
-//      source = variant.javaCompile.source
-//      classpath = files(variant.javaCompile.classpath.files, project.android.getBootClasspath())
-//      options {
-//        encoding "utf-8"
-//        links "http://docs.oracle.com/javase/7/docs/api/"
-//        linksOffline "http://d.android.com/reference", "${android.sdkDirectory}/docs/reference"
-//      }
-//      exclude '**/BuildConfig.java'
-//      exclude '**/R.java'
-//    }
-//    task("javadoc${variant.name.capitalize()}Jar", type: Jar,
-//        dependsOn: "generate${variant.name.capitalize()}Javadoc") {
-//      classifier = 'javadoc'
-//      from tasks.getByName("generate${variant.name.capitalize()}Javadoc").destinationDir
-//    }
-//    artifacts {
-//      archives tasks.getByName("javadoc${variant.name.capitalize()}Jar")
-//    }
-//  }
-//}
-//
-//artifacts {
-//  archives sourcesJar
-//  archives javadocJar
-//}
-
-//apply frome: 'build_source.gradle'
-//apply from: 'jcenter.gradle'
\ No newline at end of file
+apply from: 'jcenter.gradle'
diff --git a/downloadutil/build_source.gradle b/downloadutil/build_source.gradle
deleted file mode 100644
index 9860e0d3..00000000
--- a/downloadutil/build_source.gradle
+++ /dev/null
@@ -1,51 +0,0 @@
-// build a jar with source files
-task sourcesJar(type: Jar) {
-  from android.sourceSets.main.java.srcDirs
-  classifier = 'sources'
-}
-
-task javadoc(type: Javadoc) {
-  failOnError  false
-  source = android.sourceSets.main.java.sourceFiles
-  classpath += project.files(android.getBootClasspath().join(File.pathSeparator))
-  classpath += configurations.compile
-}
-
-// build a jar with javadoc
-task javadocJar(type: Jar, dependsOn: javadoc) {
-  classifier = 'javadoc'
-  from javadoc.destinationDir
-}
-
-android.libraryVariants.all { variant ->
-  println variant.javaCompile.classpath.files
-  if (variant.name == 'release') {
-    //我们只需 release 的 javadoc
-    task("generate${variant.name.capitalize()}Javadoc", type: Javadoc) {
-      // title = ''
-      // description = ''
-      source = variant.javaCompile.source
-      classpath = files(variant.javaCompile.classpath.files, project.android.getBootClasspath())
-      options {
-        encoding "utf-8"
-        links "http://docs.oracle.com/javase/7/docs/api/"
-        linksOffline "http://d.android.com/reference", "${android.sdkDirectory}/docs/reference"
-      }
-      exclude '**/BuildConfig.java'
-      exclude '**/R.java'
-    }
-    task("javadoc${variant.name.capitalize()}Jar", type: Jar,
-        dependsOn: "generate${variant.name.capitalize()}Javadoc") {
-      classifier = 'javadoc'
-      from tasks.getByName("generate${variant.name.capitalize()}Javadoc").destinationDir
-    }
-    artifacts {
-      archives tasks.getByName("javadoc${variant.name.capitalize()}Jar")
-    }
-  }
-}
-
-artifacts {
-  archives sourcesJar
-  archives javadocJar
-}
\ No newline at end of file