Android Open Source - innovativeproject-meetingdataexchange Display Q R

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License

The source code is released under:

MIT License

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Java Source Code

package com.TrololoCompany.meetingdataexchange;
//from  w  ww  .  jav a 2s.c om
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.graphics.Point;
import android.os.Bundle;
import android.view.Display;
import android.view.Menu;
import android.widget.ImageView;
import android.widget.TextView;

import com.TrololoCompany.meetingdataexchangedataBase.MeetingEntity;
import com.TrololoCompany.meetingdataexchangedataBase.ServerEntity;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;

public class DisplayQR extends Activity {

  private ServerEntity server;
  private MeetingEntity meeting;
  private ImageView imageView;
  @Override
  protected void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_display_qr);
    Intent intent=getIntent();
    server=(ServerEntity)
            intent.getSerializableExtra("com.TrololoCompany.meetingdataexchange.server");
    meeting=(MeetingEntity)
        intent.getSerializableExtra("com.TrololoCompany.meetingdataexchange.meeting");
    
     imageView = (ImageView) findViewById(R.id.qrCode);
     String text="mde;"+
            server.getAddress()+";"+
            meeting.getServerMeetingID()+";"+
            meeting.getCode();
     initTextView();
     create_QRCode(text);
   
      
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.display_qr, menu);
    return true;
  }
  private void initTextView()
  {
    TextView textViewServer=(TextView) findViewById(R.id.qrCode_server);
    TextView textViewmeeting=(TextView) findViewById(R.id.qrCode_meeting_id);
    TextView textViewAccessCode=(TextView) findViewById(R.id.qtCOde_meeting_access_code);
    textViewServer.setText("Serwer "+server.getAddress());
    textViewmeeting.setText("Identyfikator spotkania "+meeting.getServerMeetingID()+"");
    textViewAccessCode.setText("Kod dostepu "+meeting.getCode() );
  }
  private void create_QRCode(String input)
  {
    Display display = getWindowManager().getDefaultDisplay();
    Point size = new Point();
    display.getSize(size);
    int width = size.x;
    int height = size.y;

   QRCodeWriter qr= new QRCodeWriter();
   BitMatrix result;
   Bitmap photo;
   try {
    result=qr.encode(input,BarcodeFormat.QR_CODE, width, height);
    photo=encodeAsBitmap(result);
    imageView.setImageBitmap(photo);
  } catch (WriterException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
  }
  }
  static Bitmap encodeAsBitmap(BitMatrix result) throws WriterException
            {
     int width = result.getWidth();
      int height = result.getHeight();
      int[] pixels = new int[width * height];
      // All are 0, or black, by default
      for (int y = 0; y < height; y++) {
        int offset = y * width;
        for (int x = 0; x < width; x++) {
          pixels[offset + x] = result.get(x, y) ? Color.BLACK : Color.WHITE;
        }
      }

      Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
      bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
      return bitmap;
    }


}

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