fixed example, add Relinker to load JNI lib

react-native/android/app/build.gradle

@@ -183,7 +183,7 @@ dependencies {
     compile 'com.squareup.okio:okio:1.6.0'
     compile 'org.webkit:android-jsc:r174650'
     compile "com.facebook.react:react-native:0.16.+"
-
+    compile 'com.github.KeepSafe:ReLinker:1.1'
 
     testCompile "junit:junit:${JUNIT_VERSION}"
     testCompile "org.powermock:powermock-api-mockito:${POWERMOCK_VERSION}"

react-native/android/app/src/main/java/com/reacttests/RealmReactAndroid.java

@@ -5,14 +5,18 @@ import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.bridge.ReactContext;
 import com.facebook.react.bridge.ReactContextBaseJavaModule;
 import com.facebook.react.bridge.ReactMethod;
-
+import com.getkeepsafe.relinker.ReLinker;
 import java.util.Map;
+import java.util.HashMap;
+import android.widget.Toast;
 
 public class RealmReactAndroid extends ReactContextBaseJavaModule {
+	private static final String DURATION_SHORT_KEY = "SHORT";
+    private static final String DURATION_LONG_KEY = "LONG";
 
 	public RealmReactAndroid(ReactApplicationContext reactContext) {
 		super(reactContext);
-        getDefaultRealmFileDirectory();
+		ReLinker.loadLibrary(reactContext, "realmreact");
     }
 
     @Override
@@ -20,5 +24,23 @@ public class RealmReactAndroid extends ReactContextBaseJavaModule {
         return "RealmReactAndroid";
     }
 
+	@Override
+    public Map<String, Object> getConstants() {
+        final Map<String, Object> constants = new HashMap<>();
+        constants.put(DURATION_SHORT_KEY, Toast.LENGTH_SHORT);
+        constants.put(DURATION_LONG_KEY, Toast.LENGTH_LONG);
+        return constants;
+    }
+
+    @ReactMethod
+    public void show(String message, int duration) {
+        StringBuilder sb = new StringBuilder("String from Java: ")
+                .append(message)
+                .append("\n")
+                .append("String from JNI: ")
+                .append(getDefaultRealmFileDirectory());
+        Toast.makeText(getReactApplicationContext(), sb.toString(), duration).show();
+    }
+
 	public static native String getDefaultRealmFileDirectory();
 }

react-native/android/build.gradle

@@ -17,5 +17,6 @@ allprojects {
     repositories {
         mavenLocal()
         jcenter()
+        maven { url "https://jitpack.io" }
     }
 }

tests/react-test-app/android/app/build.gradle

@@ -76,4 +76,5 @@ dependencies {
     compile "com.android.support:appcompat-v7:23.0.1"
     compile "com.facebook.react:react-native:0.16.+"
     compile 'com.reacttests:app-debug@aar'
+    compile 'com.github.KeepSafe:ReLinker:1.1'
 }

tests/react-test-app/android/app/src/main/java/com/demo/MainActivity.java

@@ -23,7 +23,6 @@ import com.reacttests.RealmReactAndroid;
 
 public class MainActivity extends Activity implements DefaultHardwareBackBtnHandler {
 
-
     private ReactInstanceManager mReactInstanceManager;
     private ReactRootView mReactRootView;
 

tests/react-test-app/android/build.gradle

@@ -22,5 +22,6 @@ allprojects {
         flatDir{
             dirs 'lib'
         }
+        maven { url "https://jitpack.io" }
     }
 }

tests/react-test-app/index.android.js

@@ -17,7 +17,7 @@ var RealmReactAndroid = require('NativeModules').RealmReactAndroid;
 
 var Demo = React.createClass({
   buttonClicked: function() {
-    RealmReactAndroid.show("Hello Zepp");
+    RealmReactAndroid.show("Hello Zepp", RealmReactAndroid.LONG);
   },
   render: function() {
     return (