qr code halfway done

MyCity/app/src/main/java/gq/yigit/mycity/QRFragment.java

@@ -1,73 +1,62 @@
 package gq.yigit.mycity;
 
 import android.content.Context;
+import android.graphics.Bitmap;
 import android.net.Uri;
 import android.os.Bundle;
+import android.support.annotation.RequiresPermission;
 import android.support.v4.app.Fragment;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.ImageView;
 
+import com.google.zxing.WriterException;
+
+import org.json.JSONException;
+
+import gq.yigit.mycity.tools.QRCodeGenerator;
 
-/**
- * A simple {@link Fragment} subclass.
- * Activities that contain this fragment must implement the
- * {@link QRFragment.OnFragmentInteractionListener} interface
- * to handle interaction events.
- * Use the {@link QRFragment#newInstance} factory method to
- * create an instance of this fragment.
- */
 public class QRFragment extends Fragment {
-	// TODO: Rename parameter arguments, choose names that match
-	// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
-	private static final String ARG_PARAM1 = "param1";
-	private static final String ARG_PARAM2 = "param2";
 
-	// TODO: Rename and change types of parameters
-	private String mParam1;
-	private String mParam2;
 
 	private OnFragmentInteractionListener mListener;
-
+	private ImageView qr_view;
+	private Bitmap qr_img;
 	public QRFragment() {
-		// Required empty public constructor
 	}
 
-	/**
-	 * Use this factory method to create a new instance of
-	 * this fragment using the provided parameters.
-	 *
-	 * @param param1 Parameter 1.
-	 * @param param2 Parameter 2.
-	 * @return A new instance of fragment QRFragment.
-	 */
-	// TODO: Rename and change types and number of parameters
+
+
 	public static QRFragment newInstance(String param1, String param2) {
 		QRFragment fragment = new QRFragment();
-		Bundle args = new Bundle();
-		args.putString(ARG_PARAM1, param1);
-		args.putString(ARG_PARAM2, param2);
-		fragment.setArguments(args);
+
 		return fragment;
 	}
 
 	@Override
 	public void onCreate(Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
-		if (getArguments() != null) {
-			mParam1 = getArguments().getString(ARG_PARAM1);
-			mParam2 = getArguments().getString(ARG_PARAM2);
-		}
+
 	}
 
 	@Override
 	public View onCreateView(LayoutInflater inflater, ViewGroup container,
 	                         Bundle savedInstanceState) {
-		// Inflate the layout for this fragment
-		return inflater.inflate(R.layout.fragment_qr, container, false);
+		View rootView = inflater.inflate(R.layout.fragment_qr, container, false);
+		qr_view = rootView.findViewById(R.id.qr_image);
+		try {
+			qr_img = QRCodeGenerator.Generate(MainActivity.userData.getString("id"),429,429);
+			qr_view.setImageBitmap(qr_img);
+		}catch(JSONException e){
+			Log.e("[ERROR]","JSON error occured while generating qr code!");
+		}catch (WriterException e){
+			Log.e("[ERROR]","An error occured while generating qr code!");
+		}
+		return rootView;
 	}
 
-	// TODO: Rename method, update argument and hook method into UI event
 	public void onButtonPressed(Uri uri) {
 		if (mListener != null) {
 			mListener.onFragmentInteraction(uri);
@@ -91,16 +80,6 @@ public class QRFragment extends Fragment {
 		mListener = null;
 	}
 
-	/**
-	 * This interface must be implemented by activities that contain this
-	 * fragment to allow an interaction in this fragment to be communicated
-	 * to the activity and potentially other fragments contained in that
-	 * activity.
-	 * <p>
-	 * See the Android Training lesson <a href=
-	 * "http://developer.android.com/training/basics/fragments/communicating.html"
-	 * >Communicating with Other Fragments</a> for more information.
-	 */
 	public interface OnFragmentInteractionListener {
 		// TODO: Update argument type and name
 		void onFragmentInteraction(Uri uri);

MyCity/app/src/main/java/gq/yigit/mycity/tools/QRCodeGenerator.java

@@ -1,4 +1,35 @@
 package gq.yigit.mycity.tools;
 
+import android.graphics.Bitmap;
+import android.graphics.Color;
+import android.net.Uri;
+
+import com.google.zxing.BarcodeFormat;
+import com.google.zxing.MultiFormatWriter;
+import com.google.zxing.WriterException;
+import com.google.zxing.common.BitMatrix;
+
+
+import java.util.Arrays;
+
 public class QRCodeGenerator {
+    public static Bitmap Generate(String data, int height,int width) throws WriterException {
+        MultiFormatWriter writer = new MultiFormatWriter();
+        String finalData = Uri.encode(data);
+
+        // Use 1 as the height of the matrix as this is a 1D Barcode.
+        BitMatrix bm = writer.encode(finalData, BarcodeFormat.CODE_128, width, 1);
+        int bmWidth = bm.getWidth();
+
+        Bitmap imageBitmap = Bitmap.createBitmap(bmWidth, height, Bitmap.Config.ARGB_8888);
+
+        for (int i = 0; i < bmWidth; i++) {
+            // Paint columns of width 1
+            int[] column = new int[height];
+            Arrays.fill(column, bm.get(i, 0) ? Color.BLACK : Color.WHITE);
+            imageBitmap.setPixels(column, 0, 1, i, 0, 1, height);
+        }
+
+        return imageBitmap;
+    }
 }

MyCity/app/src/main/res/layout/fragment_qr.xml

@@ -1,14 +1,15 @@
 <?xml version="1.0" encoding="utf-8"?>
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
-			 xmlns:tools="http://schemas.android.com/tools"
+	xmlns:app="http://schemas.android.com/apk/res-auto"
+	xmlns:tools="http://schemas.android.com/tools"
 			 android:layout_width="match_parent"
 			 android:layout_height="match_parent"
-			 tools:context=".QRFragment">
-
-	<!-- TODO: Update blank fragment layout -->
-	<TextView
-			android:layout_width="match_parent"
-			android:layout_height="match_parent"
-			android:text="@string/hello_blank_fragment"/>
+			 tools:context=".QRFragment"
+				android:layout_marginTop="@dimen/fragment_margin">
 
+	<ImageView
+		android:id="@+id/qr_image"
+		android:layout_width="match_parent"
+		android:layout_height="429dp"
+		android:src="@drawable/app_icon" />
 </FrameLayout>

client_side/interface/UserData/socket.io

@@ -1 +0,0 @@
-Subproject commit 3020e455ab9a81341722e6c1e6cd8ef6b4b0ea28