Android Open Source - NotificationStopwatch Stopwatch Activity

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License

The source code is released under:

Artistic License 2.0 Copyright (c) 2000-2006, The Perl Foundation. Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble Thi...

Java Source Code

package com.kodarkooperativet.notificationstopwatch;
/*  w  w  w .  j av a 2s  . c om*/
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.Timer;
import java.util.TimerTask;

import com.kodarkooperativet.notificationstopwatch.TimeService.TimeContainer;

import android.os.Bundle;
import android.os.Handler;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

/**
 * 
 *    Copyright 2013 KodarKooperativet
 * 
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 * 
 *        http://www.apache.org/licenses/LICENSE-2.0
 * 
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 *    
 * The one and only Activity class. Uses {@link TimeContainer} for communication.
 * 
 * @author KodarKooperativet
 *
 */
public class StopwatchActivity extends Activity implements PropertyChangeListener {
  
  private TextView tvTime;
  private Timer t; 
  private Button btnStart;
  private Handler h;
  
  private final Runnable updateTextRunnable = new Runnable() {
    @Override
    public void run() {
      updateTimeText();
    }
  };

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_stopwatch);
    tvTime = (TextView) findViewById(R.id.tvTime);
    btnStart = (Button) findViewById(R.id.btnStart);
    h = new Handler();
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    return false;
  }
  
  @Override
  protected void onResume() {
    checkServiceRunning();
    TimeContainer t = TimeContainer.getInstance();
    if(t.getCurrentState() == TimeContainer.STATE_RUNNING) {
      btnStart.setText(R.string.stop);
      startUpdateTimer();
    } else {
      btnStart.setText(R.string.start);
      updateTimeText();
    }
    TimeContainer.getInstance().addObserver(this);
    super.onResume();
  }
  
  @Override
  protected void onPause() {
    if(t != null) {
      t.cancel();
      t = null;
    }
    TimeContainer.getInstance().removeObserver(this);
    super.onPause();
  }
  
  private void checkServiceRunning() {
    if(!TimeContainer.getInstance().isServiceRunning.get()) {
      startService(new Intent(this, TimeService.class));
    }
  }
  
  public void changeState(View v) {
    TimeContainer tc = TimeContainer.getInstance();
    if (tc.getCurrentState() == TimeContainer.STATE_RUNNING ) { 
      TimeContainer.getInstance().pause();
      btnStart.setText("Start");
    } else {
      TimeContainer.getInstance().start();
      startUpdateTimer();
      btnStart.setText("Stop");
    }
  }
  
  public void reset(View v) {
    TimeContainer.getInstance().reset();
    updateTimeText();
  }
  
  private void updateTimeText() {
    tvTime.setText(getTimeString(TimeContainer.getInstance().getElapsedTime()));
  }
  
  public void startUpdateTimer() {
    if(t != null) {
      t.cancel();
      t = null;
    }
    t = new Timer();
    t.schedule(new TimerTask() {
      @Override
      public void run() {
        h.post(updateTextRunnable);
      }
    }, 0, 16);
  }
  
  private String getTimeString(long ms) {
    if(ms == 0) {
      return "00:00:00";
    } else {
      long millis = (ms % 1000) / 10;
      long seconds = (ms / 1000) % 60;
      long minutes = (ms / 1000) / 60;
      long hours = minutes / 60;
      
      StringBuilder sb = new StringBuilder();
      if(hours > 0) {
        sb.append(hours);
        sb.append(':');
      } 
      if(minutes > 0) {
        minutes = minutes % 60;
        if(minutes >= 10) {
          sb.append(minutes);
        } else {
          sb.append(0);
          sb.append(minutes);
        }
      } else {
        sb.append('0');
        sb.append('0');
      }
      sb.append(':');
      if(seconds > 0) {
        if(seconds >= 10) {
          sb.append(seconds);
        } else {
          sb.append(0);
          sb.append(seconds);
        }
      } else {
        sb.append('0');
        sb.append('0');
      }
      sb.append(':');
      if(millis > 0) {
        if(millis >= 10) {
          sb.append(millis);
        } else {
          sb.append(0);
          sb.append(millis);
        }
      } else {
        sb.append('0');
        sb.append('0');
      }
      return sb.toString();
    }
  }

  @Override
  public void propertyChange(PropertyChangeEvent event) {
    if(event.getPropertyName() == TimeContainer.STATE_CHANGED) {
      TimeContainer t = TimeContainer.getInstance();
      if(t.getCurrentState() == TimeContainer.STATE_RUNNING) {
        btnStart.setText(R.string.stop);
        startUpdateTimer();
      } else {
        btnStart.setText(R.string.start);
        updateTimeText();
      }
      checkServiceRunning();
    }
  }

}

Java Source Code List

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