Android Open Source - ivotingverification Error Activity

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License

The source code is released under:
GNU General Public License
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Java Source Code

/**
 * Copyright (C) 2013 Eesti Vabariigi Valimiskomisjon 
 * (Estonian National Electoral Committee), www.vvk.ee
 *//w  w  w. jav a 2  s .  co  m
 * Written in 2013 by AS Finestmedia, www.finestmedia.ee
 * 
 * Vote-verification application for Estonian Internet voting system
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 **/
 
package ee.vvk.ivotingverification;

import java.io.IOException;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.drawable.GradientDrawable;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.provider.Settings;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.util.TypedValue;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import ee.vvk.ivotingverification.qr.CameraManager;
import ee.vvk.ivotingverification.qr.CaptureActivityHandler;
import ee.vvk.ivotingverification.util.C;
import ee.vvk.ivotingverification.util.Util;

/**
 * Main activity. The first screen.
 * 
 * @version 16.05.2013
 */
public class ErrorActivity extends Activity implements SurfaceHolder.Callback {

  private static final String TAG = ErrorActivity.class.getSimpleName();

  private CameraManager cameraManager;
  private CaptureActivityHandler handler;
  private boolean hasSurface;
  private SurfaceView surfaceView;
  private String errorMessage;
  private boolean networkStatus;
  private Button buttonWifi;
  private Button buttonOk;
  private ImageView buttonClose;
  private boolean connectionButtonIsClicked = false;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
        WindowManager.LayoutParams.FLAG_FULLSCREEN);

    Intent intent = getIntent();
    errorMessage = intent.getStringExtra(Util.ERROR_MESSAGE);
    networkStatus = intent.getBooleanExtra(Util.NETWORK_STATUS, true);

    hasSurface = false;

    setContentView(R.layout.error_activity);

    if (Util.DEBUGGABLE) {
      Log.e(TAG, "Message:" + errorMessage);
    }

    initErrorWindow(errorMessage, networkStatus);
  }

  public Handler getHandler() {
    return handler;
  }

  public CameraManager getCameraManager() {
    return cameraManager;
  }

  @Override
  public void onResume() {
    super.onResume();

    if (connectionButtonIsClicked) {
      finish();
      Intent intent = new Intent(getApplicationContext(),
          MainActivity.class);
      startActivity(intent);
    }
    if (this == null)
      return;

    cameraManager = new CameraManager(this);

    if (cameraManager == null) {
      Intent i = this.getIntent();
      this.finish();
      startActivity(i);
      return;
    }

    surfaceView = (SurfaceView) this.findViewById(R.id.surface_error);
    SurfaceHolder surfaceHolder = surfaceView.getHolder();
    if (hasSurface) {
      initCamera(surfaceHolder, false);
    } else {
      surfaceHolder.addCallback(this);
      surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
    }
  }

  @Override
  public void onPause() {
    if (handler != null) {
      handler.quitSynchronously();
      handler = null;
    }
    cameraManager.closeDriver();
    if (!hasSurface) {
      SurfaceView surfaceView = (SurfaceView) this
          .findViewById(R.id.surface_error);
      if (surfaceView != null) {
        SurfaceHolder surfaceHolder = surfaceView.getHolder();
        surfaceHolder.removeCallback(this);
      }
    }
    super.onPause();
  }

  private void initCamera(SurfaceHolder surfaceHolder, boolean flashlight) {
    try {
      cameraManager.openDriver(surfaceHolder, flashlight);
      if (handler == null) {
        cameraManager.startPreview();
      }
    } catch (IOException ioe) {
      if (Util.DEBUGGABLE) {
        Log.e(TAG, "Error:" + ioe);
      }
    } catch (RuntimeException e) {
      if (Util.DEBUGGABLE) {
        Log.w(TAG, "Unexpected error initializing camera", e);
      }
    }
  }

  @Override
  public void surfaceCreated(SurfaceHolder holder) {
    if (holder == null) {
      if (Util.DEBUGGABLE) {
        Log.e(TAG,
            "*** WARNING *** surfaceCreated() gave us a null surface!");
      }
    }
    if (!hasSurface) {
      hasSurface = true;
      initCamera(holder, false);
    }
  }

  @Override
  public void surfaceDestroyed(SurfaceHolder holder) {
    hasSurface = false;
  }

  @Override
  public void surfaceChanged(SurfaceHolder holder, int format, int width,
      int height) {

  }

  private void initErrorWindow(String errorMessage, boolean isNetwork) {

    LinearLayout frameBg = (LinearLayout) findViewById(R.id.frame_bg_error);
    frameBg.setBackgroundColor(Util
        .generateHexColorValue(C.frameBackground));

    LinearLayout linearLayout = (LinearLayout) findViewById(R.id.target_window_error);
    GradientDrawable bgShape = (GradientDrawable) linearLayout
        .getBackground();
    bgShape.setColor(Util.generateHexColorValue(C.errorWindow));

    linearLayout = (LinearLayout) findViewById(R.id.target_window_error_shadow);
    GradientDrawable bgShapeShadow = (GradientDrawable) linearLayout
        .getBackground();
    bgShapeShadow.setColor(Util.generateHexColorValue(C.errorWindowShadow));

    TextView textViewTitle = (TextView) findViewById(R.id.text_title_error);
    TextView textViewMessage = (TextView) findViewById(R.id.text_message_error);
    textViewTitle.setTypeface(C.typeFace);
    textViewMessage.setTypeface(C.typeFace);
    textViewMessage.setText(errorMessage);
    textViewTitle.setVisibility(View.INVISIBLE);
    textViewTitle.setTextColor(Util
        .generateHexColorValue(C.errorWindowForeground));
    textViewMessage.setVisibility(View.VISIBLE);
    textViewMessage.setTextColor(Util
        .generateHexColorValue(C.errorWindowForeground));

    buttonWifi = (Button) findViewById(R.id.btn_wifi);
    buttonWifi.setTextColor(Util.generateHexColorValue(C.btnForeground));
    GradientDrawable bgWifiShape = (GradientDrawable) buttonWifi
        .getBackground();
    buttonWifi.setTypeface(C.typeFace);
    bgWifiShape.setColor(Util.generateHexColorValue(C.btnBackground));

    buttonOk = (Button) findViewById(R.id.btn_ok);
    buttonOk.setTextColor(Util.generateHexColorValue(C.btnForeground));
    GradientDrawable bgOkShape = (GradientDrawable) buttonOk
        .getBackground();
    buttonOk.setTypeface(C.typeFace);
    bgOkShape.setColor(Util.generateHexColorValue(C.btnBackground));

    if (!isNetwork) {
      buttonWifi.setText(C.btnWifi);
      buttonWifi.setTextSize(TypedValue.COMPLEX_UNIT_SP, 18);
      buttonWifi.setVisibility(View.VISIBLE);
      buttonWifi.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
          clickWifiButton(v);
        }
      });

      buttonOk.setText(C.btnPacketData);
      buttonOk.setTextSize(TypedValue.COMPLEX_UNIT_SP, 18);
      buttonOk.setVisibility(View.VISIBLE);
      buttonOk.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
          clickPacketDataButton(v);
        }
      });
    } else {
      buttonWifi.setText(C.btnMore);
      buttonWifi.setVisibility(View.VISIBLE);
      buttonWifi.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
          clickMoreButton(v);
        }
      });

      buttonOk.setText(C.btnOk);
      buttonOk.setVisibility(View.VISIBLE);
      buttonOk.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
          finish();
        }
      });
    }

    buttonClose = (ImageView) findViewById(R.id.close_error);
    buttonClose.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        finish();
      }
    });
  }

  public void clickMoreButton(View view) {
    Intent helpActivity = new Intent(this, HelpActivity.class);
    startActivity(helpActivity);
  }
  
  public void clickPacketDataButton(View view) {
    connectionButtonIsClicked = true;
    try {
      ErrorActivity.this.startActivity(new Intent(
          Settings.ACTION_DATA_ROAMING_SETTINGS));
    } catch (Exception e) {
      ErrorActivity.this.startActivity(new Intent(
          Settings.ACTION_SETTINGS));
    }
  }

  public void clickWifiButton(View view) {
    connectionButtonIsClicked = true;
    ErrorActivity.this.startActivity(new Intent(
        Settings.ACTION_WIFI_SETTINGS));
  }

}
Java Source Code List
