Switch to Android logger, minor changes

Author: minaltolpadi

InkRecognition/app/src/main/java/com/azure/cognitiveservices/inkrecognitionsample/InkStrokeImplementor.java

@@ -1,6 +1,8 @@
 package com.azure.cognitiveservices.inkrecognitionsample;
 
-import com.azure.ai.inkrecognizer.*;
+import com.azure.ai.inkrecognizer.InkPoint;
+import com.azure.ai.inkrecognizer.InkStroke;
+import com.azure.ai.inkrecognizer.InkStrokeKind;
 
 import java.util.ArrayList;
 import java.util.List;

InkRecognition/app/src/main/java/com/azure/cognitiveservices/inkrecognitionsample/MainActivity.java

@@ -2,17 +2,20 @@
 
 import android.os.Bundle;
 import android.support.v7.app.AppCompatActivity;
+import android.util.Log;
 
 public class MainActivity extends AppCompatActivity {
 
+    private static final String TAG = "InkRecognizer";
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         try {
             NoteTaker noteTaker = new NoteTaker(this);
             setContentView(noteTaker);
         } catch (Exception e) {
-            System.out.println("Error in ink analysis");
+            Log.d(TAG, "Error in ink analysis", e);
         }
     }
 }

InkRecognition/app/src/main/java/com/azure/cognitiveservices/inkrecognitionsample/NoteTaker.java

@@ -7,9 +7,11 @@
 import android.graphics.Path;
 import android.os.AsyncTask;
 import android.os.CountDownTimer;
+import android.util.Log;
 import android.view.MotionEvent;
 import android.view.View;
 import android.widget.Toast;
+
 import com.azure.ai.inkrecognizer.*;
 import com.azure.ai.inkrecognizer.model.InkDrawing;
 import com.azure.ai.inkrecognizer.model.InkRecognitionRoot;
@@ -26,6 +28,7 @@ public class NoteTaker extends View {
     private final InkRecognizerAsyncClient inkRecognizerAsyncClient;
     private CountDownTimer analysisTimer = null;
     private final ArrayList<InkStroke> strokes = new ArrayList<>();
+    private static final String TAG = "InkRecognizer";
 
     public NoteTaker(Context context) throws Exception {
         super(context);
@@ -73,15 +76,16 @@ private static class recognizeInkTask extends AsyncTask<NoteTaker, Integer, Note
 
         @Override
         protected NoteTaker doInBackground(NoteTaker... params) {
-            NoteTaker noteTaker = params[0];
+            NoteTaker noteTaker = null;
             try {
+                noteTaker = params[0];
                 if (noteTaker.strokes.size() != 0) {
                     Mono<Response<InkRecognitionRoot>> response = noteTaker.inkRecognizerAsyncClient.recognizeInk(noteTaker.strokes);
                     response.subscribe(r -> showResults(r), e -> e.printStackTrace());
                 }
             } catch (Exception e) {
                 e.printStackTrace();
-                System.out.println("Error parsing response");
+                Log.d(TAG, "Error while fetching the response", e);
             }
             return noteTaker;
         }