Android Open Source - KendaliPintuAndroid Barcode Open Door Activity

From Project

Back to project page KendaliPintuAndroid.
License

The source code is released under:
GNU General Public License
If you think the Android project KendaliPintuAndroid listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
Java Source Code

/*******************************************************************************
 * Copyright (c) 2014 Dimas Rullyan Danu.
 * //from   ww w .ja  v  a 2  s.  co  m
 * Kendali Pintu is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * Kendali Pintu is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with Kendali Pintu. If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
package com.dimasdanz.kendalipintu;

import java.util.ArrayList;
import java.util.List;

import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;

import com.dimasdanz.kendalipintu.opendoor.BarcodePreview;
import com.dimasdanz.kendalipintu.util.JSONParser;
import com.dimasdanz.kendalipintu.util.ServerUtilities;
import com.dimasdanz.kendalipintu.util.SharedPreferencesManager;
import com.dimasdanz.kendalipintu.util.StaticString;

import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.TextView;
import android.widget.Toast;

import android.hardware.Camera;
import android.hardware.Camera.PreviewCallback;
import android.hardware.Camera.AutoFocusCallback;
import android.hardware.Camera.Size;

import net.sourceforge.zbar.ImageScanner;
import net.sourceforge.zbar.Image;
import net.sourceforge.zbar.Symbol;
import net.sourceforge.zbar.SymbolSet;
import net.sourceforge.zbar.Config;

public class BarcodeOpenDoorActivity extends Activity {
  private Camera mCamera;
    private BarcodePreview mPreview;
    private Handler autoFocusHandler;

    ImageScanner scanner;

    private boolean previewing = true;

    static {
        System.loadLibrary("iconv");
    } 

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_barcode_open_door);

    autoFocusHandler = new Handler();
        mCamera = getCameraInstance();

        scanner = new ImageScanner();
        scanner.setConfig(0, Config.X_DENSITY, 3);
        scanner.setConfig(0, Config.Y_DENSITY, 3);

        mPreview = new BarcodePreview(this, mCamera, previewCb, autoFocusCB);
        FrameLayout preview = (FrameLayout)findViewById(R.id.cameraPreview);
        preview.addView(mPreview);
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.barcode_open_door, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();
    if (id == R.id.action_settings) {
      return true;
    }
    return super.onOptionsItemSelected(item);
  }
  
    public void onPause() {
        super.onPause();
        releaseCamera();
    }
    
    public void onResume() {
      super.onResume();
      if (mCamera == null) {
            previewing = true;
            mCamera = getCameraInstance();
            mPreview = new BarcodePreview(this, mCamera, previewCb, autoFocusCB);
        }
    }
    
    public static Camera getCameraInstance(){
        Camera c = null;
        try {
            c = Camera.open();
        } catch (Exception e){
        }
        return c;
    }

    private void releaseCamera() {
        if (mCamera != null) {
            previewing = false;
            mPreview.getHolder().removeCallback(mPreview);
            mCamera.setPreviewCallback(null);
            mCamera.release();
            mCamera = null;
        }
    }

    private Runnable doAutoFocus = new Runnable() {
      public void run() {
        if (previewing){
          mCamera.autoFocus(autoFocusCB);
        }
      }
    };

    PreviewCallback previewCb = new PreviewCallback() {
      public void onPreviewFrame(byte[] data, Camera camera) {
        Camera.Parameters parameters = camera.getParameters();
        Size size = parameters.getPreviewSize();
        Image barcode = new Image(size.width, size.height, "Y800");
        barcode.setData(data);
        
        int result = scanner.scanImage(barcode);
        
        if (result != 0) {
          SymbolSet syms = scanner.getResults();
          for (Symbol sym : syms) {
            if(sym.getData().equals(StaticString.TAG_BARCODE_ENTER)){
              Log.d("Result", "Masuk");
              previewing = false;
                mCamera.setPreviewCallback(null);
                mCamera.stopPreview();
                releaseCamera();
                new BarcodeSendData().execute(StaticString.TAG_BARCODE_ENTER);
            }else if(sym.getData().equals(StaticString.TAG_BARCODE_EXIT)){
              Log.d("Result", "Keluar");
              previewing = false;
                mCamera.setPreviewCallback(null);
                mCamera.stopPreview();
                releaseCamera();
                new BarcodeSendData().execute(StaticString.TAG_BARCODE_EXIT);
            }else{
              Toast.makeText(BarcodeOpenDoorActivity.this, R.string.string_barcode_invalid, Toast.LENGTH_SHORT).show();
              Log.d("Result", "Invalid");
            }
          }
        }
      }
    };

    AutoFocusCallback autoFocusCB = new AutoFocusCallback() {
      public void onAutoFocus(boolean success, Camera camera) {
        autoFocusHandler.postDelayed(doAutoFocus, 1000);
      }
    };
    
    class BarcodeSendData extends AsyncTask<String, Void, String>{
      JSONParser jsonParser = new JSONParser();
    JSONObject json = new JSONObject();
      TextView txtInfo = (TextView)findViewById(R.id.txtBarcodeInfo);
      List<NameValuePair> params = new ArrayList<NameValuePair>();
      
      @Override
      protected void onPreExecute() {
        super.onPreExecute();
        findViewById(R.id.layoutCamera).setVisibility(View.GONE);
        findViewById(R.id.layoutResult).setVisibility(View.VISIBLE);
      }
      
    @Override
    protected String doInBackground(String... args) {
      if(args[0].equals(StaticString.TAG_BARCODE_ENTER)){
        params.add(new BasicNameValuePair("username_id", SharedPreferencesManager.getUsernameIdPrefs(getApplicationContext())));
        params.add(new BasicNameValuePair("input_source", StaticString.INPUT_SOURCE_OUTSIDE));
        json = jsonParser.makeHttpRequest(ServerUtilities.getOpenDoorUrl(getApplicationContext()), "POST", params);
        if(json != null){
          try {
            if(json.getBoolean("response")){
              return StaticString.TAG_BARCODE_ENTER;
            }else{
              return StaticString.TAG_ARDUINO_OFFLINE;
            }
          } catch (JSONException e) {
            e.printStackTrace();
            return StaticString.TAG_SERVER_OFFLINE;
          }                
        }else{
          return StaticString.TAG_SERVER_OFFLINE;
        }
      }else if(args[0].equals(StaticString.TAG_BARCODE_EXIT)){
        params.add(new BasicNameValuePair("username_id", SharedPreferencesManager.getUsernameIdPrefs(getApplicationContext())));
        params.add(new BasicNameValuePair("input_source", StaticString.INPUT_SOURCE_INSIDE));
        json = jsonParser.makeHttpRequest(ServerUtilities.getOpenDoorUrl(getApplicationContext()), "POST", params);
        if(json != null){
          try {
            if(json.getBoolean("response")){
              return StaticString.TAG_BARCODE_EXIT;
            }else{
              return StaticString.TAG_ARDUINO_OFFLINE;
            }
          } catch (JSONException e) {
            e.printStackTrace();
            return StaticString.TAG_SERVER_OFFLINE;
          }
        }else{
          return StaticString.TAG_SERVER_OFFLINE;
        }
      }else{
        return StaticString.TAG_SERVER_OFFLINE;
      }
    }
    
    @Override
    protected void onPostExecute(String result) {
      super.onPostExecute(result);
      findViewById(R.id.pbBarcode).setVisibility(View.GONE);
      if(result != null){
        if(result.equals(StaticString.TAG_BARCODE_ENTER)){
          txtInfo.setText(R.string.string_barcode_enter);
        }else if(result.equals(StaticString.TAG_BARCODE_EXIT)){
          txtInfo.setText(R.string.string_barcode_exit);
        }else if(result.equals(StaticString.TAG_ARDUINO_OFFLINE)){
          txtInfo.setText(R.string.string_arduino_offline);
        }else{
          txtInfo.setText(R.string.string_server_offline);
        }
      }
    }
    }
}
Java Source Code List
