Android Open Source - infinitep Utils

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License

The source code is released under:
Apache License
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Java Source Code

package es.daconstenla.infinip.database.utils;
/*  www . jav a2  s .  co m*/
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Locale;

import android.util.Log;
import android.widget.TextView;

public class Utils {
  public static boolean DEBUG = false;
  /**
   * 
   * @param date String with date in this format yyyy-MM-dd
   * @param time String whit time in this format HH:mm:ss
   * @return long with time in milliseconds since Jan. 1, 1970, midnight GMT.
   * If conversion fails, returns -1
   */
  public static long createDateInMilisFromStrings(String date, String time){

    //String dtStart = "2010-10-15T09:27:37";  
    SimpleDateFormat  format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss",Locale.getDefault());

    String tDateTime = date+"T"+time;
    if(DEBUG)Log.d("Utils S > L", tDateTime);
    Date date2 = null;
    
    if(tDateTime != null){
      try {  
        date2 = format.parse(tDateTime);
        if(DEBUG)Log.d("Utils S > L", String.valueOf(date2));
        if(DEBUG)Log.d("Utils S > L", String.valueOf(date2.getTime()));
      }
      catch (java.text.ParseException e) {
        if(DEBUG)Log.d("Utils S > L","Cannot convert "+tDateTime+" trying alternative format, dd-MM-yyyy'T'HH:mm:ss");
        
        SimpleDateFormat format2 = new SimpleDateFormat("dd-MM-yyyy'T'HH:mm",Locale.getDefault());
        
        try{
          date2 = format2.parse(tDateTime);
          if(DEBUG)Log.d("Utils S > L", String.valueOf(date2));
          if(DEBUG)Log.d("Utils S > L", String.valueOf(date2.getTime()));
        }catch (java.text.ParseException i) {
          if(DEBUG)Log.d("Utils S > L","Failed conversion of "+tDateTime);
          else i.printStackTrace();
          date2 = null;
        }
        
      }
    }

    if(date != null)
      return date2.getTime();
    else
      return -1;
  }
  /***
   * Converts a long timestamp in a two parts string element in 0 position of array is date and 1 is time
   * @param date_time long with the timestamp 
   * @return 2 elements array with date and time
   */
  public static String[] createDateInStringFromLong(long date_time){
    String datetime[] = new String[2];
    Calendar cal = new GregorianCalendar();
    if(DEBUG)Log.d("Utils L > S", String.valueOf(date_time));
    cal.setTimeInMillis(date_time);
    
    int month = 0,tmonth = cal.get(Calendar.MONTH);
    
    switch(tmonth){
    case Calendar.JANUARY:month = 1;break;
    case Calendar.FEBRUARY:month = 2;break;
    case Calendar.MARCH:month = 3;break;
    case Calendar.APRIL:month = 4;break;
    case Calendar.MAY:month = 5;break;
    case Calendar.JUNE:month = 6;break;
    case Calendar.JULY:month = 7;break;
    case Calendar.AUGUST:month = 8;break;
    case Calendar.SEPTEMBER:month = 9;break;
    case Calendar.OCTOBER:month = 10;break;
    case Calendar.NOVEMBER:month = 11;break;
    case Calendar.DECEMBER:month = 12;break;
    }
    
    String tString = cal.get(Calendar.YEAR)+"-"+String.valueOf(month)+"-"+cal.get(Calendar.DAY_OF_MONTH);
    datetime[0] = tString;
    tString = cal.get(Calendar.HOUR)+":"+cal.get(Calendar.MINUTE)+":"+cal.get(Calendar.SECOND);
    datetime[1] = tString;
    if(DEBUG)Log.d("Util L > S",tString);
    
    return datetime;
  }
  /**
   * Change the size of a textview text to fit it in the height available
   * @param textToAdjust textview which will be resized
   * @param maxFontSize default size to start the resizing
   */
  public static void resizeTextToFitInLayout(TextView textToAdjust,int maxFontSize) {
    int nH = textToAdjust.getHeight();
    int nTextSize = maxFontSize;
    
    while(textToAdjust.getLineHeight()>nH){
      nTextSize--;
      textToAdjust.setTextSize(nTextSize);
    }
    
  }
  public static int numberOfDaysBeforeInWeek(int firstDayOfWeek, int dayOfWeek){
    int diff = dayOfWeek-firstDayOfWeek;
    if(diff<0) diff+=7;
    
    return diff;
  }
  public static int numberOfDaysAfterInWeek(int firstDayOfWeek, int dayOfWeek){
    int diff = dayOfWeek-firstDayOfWeek;
    if(diff>=0) diff=7-diff;
    else diff=Math.abs(diff);
      
    return --diff;
  }
}
Java Source Code List
