ndk-build is now called by gradle build

android/build.gradle

@@ -18,10 +18,6 @@ repositories {
 }
 
 dependencies {
-//    compile "com.android.support:support-v4:26.1.0"
-//    compile "com.android.support:support-v13:26.1.0"
-//    compile "com.android.support:cardview-v7:26.1.0"
-//    compile "com.android.support:appcompat-v7:26.1.0"
     compile 'com.android.support:support-v4:25.3.1'
     compile 'com.android.support:design:25.3.1'
 }
@@ -35,6 +31,9 @@ android {
         minSdkVersion 14
         versionCode 1
         versionName "2.18.0"
+        ndk {
+            abiFilters 'armeabi-v7a'
+        }
     }
     sourceSets {
         main {
@@ -59,5 +58,10 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-project.txt'
         }
     }
+    externalNativeBuild {
+        ndkBuild {
+            path './jni/Android.mk'
+        }
+    }
 }