fix gradle issue
diff --git a/android/gradle.properties b/android/gradle.properties
index 8583e59..f940681 100755
--- a/android/gradle.properties
+++ b/android/gradle.properties
@@ -13,5 +13,5 @@
 #Mon Jun 27 20:06:22 CST 2016
 org.gradle.jvmargs=-Xmx4096m -XX:MaxPermSize=2048m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
 org.gradle.parallel=true
-android.enableAapt2=false
-android.enableD8=false
\ No newline at end of file
+#android.enableAapt2=false
+#android.enableD8=false
\ No newline at end of file
diff --git a/android/playground/build.gradle b/android/playground/build.gradle
index b66dd9b..1d896f6 100755
--- a/android/playground/build.gradle
+++ b/android/playground/build.gradle
@@ -26,11 +26,7 @@
     }
     applicationVariants.all { variant ->
         variant.outputs.each { output ->
-            def outputFile = output.outputFile
-            if (outputFile != null && outputFile.name.equals('app-debug.apk')) {
-                def fileName = outputFile.name.replace("app-debug.apk", "playground.apk")
-                output.outputFile = new File(outputFile.parent, fileName)
-            }
+            output.outputFileName = "playground.apk"
         }
     }
     signingConfigs {