start refactoring

Author: vkocheryzhkin

visionSamples/FaceTracker/app/src/androidTest/java/dlib/android/FaceRecognizerTest.java

@@ -0,0 +1,14 @@
+package dlib.android;
+
+import org.junit.Test;
+
+import static junit.framework.Assert.assertEquals;
+
+public class FaceRecognizerTest {
+    @Test
+    public void RecognizeTest() {
+        FaceRecognizer fr = new FaceRecognizer();
+        String res = fr.Recognize();
+        assertEquals("Unknown", res);
+    }
+}

visionSamples/FaceTracker/app/src/main/cpp/native-lib.cpp

@@ -294,4 +294,10 @@ Java_com_google_android_gms_samples_vision_face_facetracker_FaceTrackerActivity_
 
     return a + b;
 
+}extern "C"
+JNIEXPORT jstring JNICALL
+Java_dlib_android_FaceRecognizer_recognizeNative(JNIEnv *env, jobject instance) {
+
+    std::string returnValue = "Unknown";
+    return env->NewStringUTF(returnValue.c_str());
 }

visionSamples/FaceTracker/app/src/main/java/dlib/android/FaceRecognizer.java

@@ -0,0 +1,14 @@
+package dlib.android;
+
+public class FaceRecognizer {
+
+    FaceRecognizer() {
+        System.loadLibrary("native-lib");
+    }
+
+    String Recognize() {
+
+        return recognizeNative();
+    }
+    public native String recognizeNative();
+}