如何更改当前日期颜色？

Question

下面是我的代码获取当前周日期并在按钮中打印我如何更改当前日期的颜色???只需要改变今天的颜色日期？我该怎么做???? mDay是当前日期。将今天的日期颜色改为蓝色怎么可能？

    public class HoyahCalendar extends Activity {
public static int mYear;
public static int currentIndex = -1;
public static int mMonth;
public static int mDay;
public static String[][] a = new String[6][7];

         Calendar mCalendar = Calendar.getInstance();
    mYear = mCalendar.get(Calendar.YEAR);
    mMonth = mCalendar.get(Calendar.MONTH) + 1;
    mDay = mCalendar.get(Calendar.DAY_OF_MONTH);




               public void showOnScreen() {

    if (mMonth ==1) 
    {
        Monthname="January";
        }
    else 
        if (mMonth ==2) { 
            Monthname="February";
            }

        else
    if (mMonth ==3) { Monthname="March";}
    else 
        if (mMonth ==4) { Monthname="April";    }

        else
    if (mMonth ==5) { Monthname="May";}
    else 
        if (mMonth ==6) { Monthname="June"; }
        else
    if (mMonth ==7) { Monthname="July";}
    else 
        if (mMonth ==8) { Monthname="August";   }
        else
    if (mMonth ==9) { Monthname="September";}
    else 
        if (mMonth ==10)    { Monthname="October";  }
    if (mMonth ==11)    { Monthname="November";}
    else 
        if (mMonth ==12)    { Monthname="December"; }


    date_today.setText(  Monthname + "  " +mYear);
    e00.setText("" + a[0][0]);
    e01.setText("" + a[0][1]);
    e02.setText("" + a[0][2]);
    e03.setText("" + a[0][3]);
    e04.setText("" + a[0][4]);
    e05.setText("" + a[0][5]);
    e06.setText("" + a[0][6]);

}


  public class ShowCalendar {
 int mYear;
  int mMonth;
int mDay;
public ShowCalendar(int mYear, int mMonth){
    this.mYear = mYear;
    this.mMonth = mMonth;

    calculateMonthFirstday();
}


public int getmDay() {
    return mDay;
}


public void setmDay(int mDay) {
    this.mDay = mDay;
}


public ShowCalendar(int mYear, int mMonth, int mDay, String time){
    this.mYear = mYear;
    this.mMonth = mMonth;
    if (time == "next"){
        HoyahCalendar.currentIndex++;
        if (HoyahCalendar.currentIndex == 5){
            HoyahCalendar.currentIndex--;
        }
        this.mDay = mDay + 7;
    } else if (time == "last"){
        HoyahCalendar.currentIndex--;
        if (HoyahCalendar.currentIndex == -1){
            HoyahCalendar.currentIndex++;
        }
        this.mDay = mDay - 7;
    }
    calculateMonthFirstday();
}

public void calculateMonthFirstday(){
    int month, first_day=0;
    if((mYear%4==0 && mYear%100!=0)||(mYear%400==0))
        month=1;
    else
        month=0;

    int y, y12, c, c12, m, d;
    y = mYear%100;
    y12 = (mYear-1)%100; //only for January and February
    c = mYear/100;
    c12 = (mYear-1)/100;
    m = mMonth;
    d = 1;

    switch(mMonth){
    case 1: {first_day = y12 + y12/4 +c12/4 - 2*c12 + 26*(13 + 1)/10 + d - 1;break;}
    case 2: {first_day = y12 + y12/4 +c12/4 - 2*c12 + 26*(14 + 1)/10 + d - 1;break;}
    case 4: {first_day = y + y/4 +c/4 - 2*c + 26*(m + 1)/10 + d - 1;break;}
    case 5: {first_day = y + y/4 +c/4 - 2*c + 26*(m + 1)/10 + d - 1;break;}
    case 6: {first_day = y + y/4 +c/4 - 2*c + 26*(m + 1)/10 + d - 1;break;}
    case 7: {first_day = y + y/4 +c/4 - 2*c + 26*(m + 1)/10 + d - 1;break;}
    case 8: {first_day = y + y/4 +c/4 - 2*c + 26*(m + 1)/10 + d - 1;break;}
    case 9: {first_day = y + y/4 +c/4 - 2*c + 26*(m + 1)/10 + d - 1;break;}
    case 10: {first_day = y + y/4 +c/4 - 2*c + 26*(m + 1)/10 + d - 1;break;}
    case 11: {first_day = y + y/4 +c/4 - 2*c + 26*(m + 1)/10 + d - 1;break;}
    case 12: {first_day = y + y/4 +c/4 - 2*c + 26*(m + 1)/10 + d - 1;break;}
    }
    if(first_day<0)
        first_day = 7 - (Math.abs(first_day))%7;//first_day每月第一天星期几
    else
        first_day = first_day%7;

    switch(mMonth){
        case 1: {CalculateCalendar(1,first_day,31);break;}
        case 2: {CalculateCalendar(2,first_day,28+month);break;}
        case 3: {CalculateCalendar(3,first_day,31);break;}
        case 4: {CalculateCalendar(4,first_day,30);break;}
        case 5: {CalculateCalendar(5,first_day,31);break;}
        case 6: {CalculateCalendar(6,first_day,30);break;}
        case 7: {CalculateCalendar(7,first_day,31);break;}
        case 8: {CalculateCalendar(8,first_day,31);break;}
        case 9: {CalculateCalendar(9,first_day,30);break;}
        case 10:{CalculateCalendar(10,first_day,31);break;}
        case 11:{CalculateCalendar(11,first_day,30);break;}
        case 12:{CalculateCalendar(12,first_day,31);break;}
    }
}

public void CalculateCalendar(int month_no, int week_no, int month_days){

    int i, s, targetRow = 0;
    int currentDay;
    if (this.mDay == 0){
        currentDay= HoyahCalendar.mDay;     
    }else {
        currentDay = this.mDay;
    }
    //String[][] a = new String[6][7];
    for (i=0;i<week_no;i++)
        HoyahCalendar.a[i/7][i%7] = "";

    for(i=week_no; i<week_no + month_days; i++){
        s = i - week_no + 1;
        HoyahCalendar.a[i/7][i%7] = String.valueOf(s);
        if (s == currentDay && HoyahCalendar.currentIndex == -1){
            HoyahCalendar.currentIndex = i/7;
        }
    } 
    for (i=0; i<7;i++){
        if (HoyahCalendar.a[HoyahCalendar.currentIndex][i] == null){
            HoyahCalendar.a[0][i] = "";
        }else{
            HoyahCalendar.a[0][i] = HoyahCalendar.a[HoyahCalendar.currentIndex][i];
        }

    }
    for(i=week_no+month_days; i<42; i++)


        HoyahCalendar.a[i/7][i%7] = "";
}

}