add android sample gradle support

android/sample/BUCK

@@ -10,7 +10,7 @@ load("//tools/build_defs/oss:yoga_defs.bzl", "ANDROID_RES_TARGET", "ANDROID_SAMP
 yoga_android_binary(
     name = "sample",
     keystore = ":debug_keystore",
-    manifest = "AndroidManifest.xml",
+    manifest = "src/main/AndroidManifest.xml",
     deps = [
         ANDROID_SAMPLE_JAVA_TARGET,
         ANDROID_SAMPLE_RES_TARGET,

android/sample/build.gradle

@@ -0,0 +1,30 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion rootProject.compileSdkVersion
+    buildToolsVersion rootProject.buildToolsVersion
+
+    defaultConfig {
+        applicationId "com.facebook.samples.yoga"
+        minSdkVersion rootProject.minSdkVersion
+        targetSdkVersion rootProject.targetSdkVersion
+    }
+
+    compileOptions {
+        targetCompatibility rootProject.targetCompatibilityVersion
+        sourceCompatibility rootProject.sourceCompatibilityVersion
+    }
+}
+
+dependencies {
+  implementation project(':yoga-layout')
+  implementation "com.android.support:appcompat-v7:28.0.0"
+  implementation "com.facebook.soloader:soloader:0.6.0"
+}

android/sample/src/main/AndroidManifest.xml

@@ -14,14 +14,6 @@
           android:versionName="1.0"
           >
 
-  <variable name="applicationId" value="com.facebook.yoga"/>
-  <variable name="app_label" value="Yoga Sample App"/>
-
-  <uses-sdk
-    android:minSdkVersion="15"
-    android:targetSdkVersion="19"
-    />
-
   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
 
   <application