Android Open Source - Link-Schedule Clock View

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License

The source code is released under:

GNU General Public License

Java Source Code

/**
 * Copyright 2011 Kurtis Nusbaum/*from  w  w w .jav a 2s  .c o  m*/
 *
 * This file is part of LinkSchedule.  
 *
 * LinkSchedule 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 2 of the 
 * License, or (at your option) any later version.  
 *
 * LinkSchedule 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 LinkSchedule. If not, see 
 * http://www.gnu.org/licenses/.
 */

package org.klnusbaum.linkschedule;

import android.content.Context;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.view.View;
import android.view.LayoutInflater;
import android.text.method.TransformationMethod;

import java.util.GregorianCalendar;
import java.util.Map;

/**
 * Compound component displaying a Bus Stop name and the time the next
 * bus for that stop comes
 * 
 * @author Kurtis Nusbaum
 * @version 1.0
 */
public class ClockView extends RelativeLayout implements CalendarBackedView{

  /** The two textviews that make up a ClockView */
  private TextView time, stopLabel, timeTill;

  /** The calendar representing the content in the "time" TextView */
  private GregorianCalendar cal;

  /**
   * Constructs a new ClockView.
   *
   * @param context The context in which the view is being displayed.
   * @param stopName The name of the stop the ClockView is displaying.
   */
  public ClockView(Context context, CharSequence stopName){
    super(context);
    initClock(context, stopName);
  }

  /**
   * Constructs a new ClockView.
   *
   * @param context The context in which the view is being displayed.
   * @param attrs Set of attributes used to define the ClockView.
   */
  public ClockView(Context context, AttributeSet attrs){
    super(context, attrs);
    TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.ClockView);
    CharSequence stopName = a.getString(R.styleable.ClockView_stopName);
    initClock(context, stopName);
  }

    

  /**
   * Initializes the ClockView.
   *
   * @param context The context in which the view is being displayed.
   * @param stopName The name of the stop the ClockView is displaying.
   */
  private void initClock(Context context, CharSequence stopName){
    LayoutInflater inflater = 
      (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
      inflater.inflate(R.layout.clock_layout, this);
    //setOrientation(VERTICAL);
    stopLabel = (TextView)findViewById(R.id.stopLabel);
    time = (TextView)findViewById(R.id.time);
    timeTill = (TextView)findViewById(R.id.timeTill);
    if(stopName != null){
      stopLabel.setText(stopName);
    }
  }

  /**
   * Set the transformation method for the time TextView.
   *
    * @param transMethod The TransformationMethod to use.
   */
  public void setTransformationMethod(TransformationMethod transMethod){
    time.setTransformationMethod(transMethod);
  }

  /**
   * Set the time displayed by the clock.
   *
   * @param calendarAndLabel A value is the time to be displayed in the 
   * ClockView and whose key is a GregorianCalendar that corresponds to the
   * time to be displyed.
   * @param currentTime A gregorian calednar representing what the current time
   * is. This is used to calculate the value placed in the timeTill field.
   * If this arguement is null, the timeTill field will not be populated and it
   * will be hidden.
   */
  public void setClockTime(
    Map.Entry calendarAndLabel, 
    GregorianCalendar currentTime)
  {
    time.setText((String)calendarAndLabel.getValue());
    if(currentTime != null){
      timeTill.setText(getTimeTillString(
        currentTime, 
        (GregorianCalendar)calendarAndLabel.getKey()));
      timeTill.setVisibility(View.VISIBLE);
    }
    else{
      timeTill.setVisibility(View.INVISIBLE);
    }
    cal = ((GregorianCalendar)calendarAndLabel.getKey());
  }

  /**
   * Set the time displayed by the clock.
   *
   * Eequivalent to calling setClockTime(calendarAndLabel, null)
   */
  public void setClockTime(Map.Entry calendarAndLabel){
    setClockTime(calendarAndLabel, null);
  }

  
  /**
   * Gets the stop name being used by this ClockView.
   *
    * @return The stop name being displayed by this ClockView.
   */
  public CharSequence getStopName(){
    return stopLabel.getText();
  }  

  /**
   * Gets the time being displayed by this ClockView.
   *
    * @return The time being displayed by the ClockView.
   */
  public CharSequence getClockTime(){
    return time.getText();
  }

  @Override
  public GregorianCalendar getCalendar(){
    return cal;
  }

  /**
   * Generates a string representing the time left until the next bus
   * comes based on the given arguements.
   *
    * @param currentTime A GregorianCalendar representing the current time.
   * @param stopTime When the next bus is coming for given stop.
   */
  public static String getTimeTillString(
    GregorianCalendar currentTime,
    GregorianCalendar stopTime)
  {
    long diff = stopTime.getTimeInMillis() - currentTime.getTimeInMillis();
    String timeLabel;
    String displayString;
    double displayTime;
    long mins = diff / (60*1000);    
    if(mins >= 60){
      displayTime = diff / (60.0*60.0*1000.0);  
      if(displayTime == 1.0){
        timeLabel = "hour";
      }
      else{
        timeLabel = "hours";
      }
      displayString = String.valueOf(displayTime);
      int dotIndex = displayString.indexOf(".");
      displayString = displayString.substring(0,dotIndex+2);  
    }
    else{
      if(mins == 1){
        timeLabel = "minute";
        displayTime = (float)mins;
      }
      else{
        timeLabel = "minutes";
        displayTime = (double)mins;
      }
      displayString = String.valueOf(displayTime);
      int dotIndex = displayString.indexOf(".");
      displayString = displayString.substring(0,dotIndex);  
    }
    return "(" + displayString + " " + timeLabel + ")";
  }
}

Java Source Code List

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