Android判斷當前時間為本月的第幾周,本周的第幾天

import java.text.SimpleDateFormat;

import java.util.Calendar;

import android.app.Activity;

import android.os.Bundle;

/**


Demo描述: 
判斷當前時間為本月的第幾周 
判斷當前時間為本周的第幾天 
判斷當前的季節 

注意問題: 
在Calendar中每周是從我們中國人的周日(星期七)開始計算的. 
所以Calendar的周一實際為我們中國人的上周的星期七. 
在此需要特殊處理一下. 
*/

public class TestWeekActivity extends Activity {

 @Override

 public void onCreate(Bundle savedInstanceState) {

 super.onCreate(savedInstanceState);  
 setContentView(R.layout.main);  
 getCurrentTime();  
 getWeekAndDay();  


}



private void getWeekAndDay(){  
     Calendar calendar= Calendar.getInstance();  
    //獲取當前時間為本月的第幾周  
     int week = calendar.get(Calendar.WEEK_OF_MONTH);  
     //獲取當前時間為本周的第幾天  
     int day = calendar.get(Calendar.DAY_OF_WEEK);  
     if (day==1) {  
        day=7;  
        week=week-1;  
    } else {  
        day=day-1;  
    }  
     System.out.println("今天是本月的第" + week + "周"+",星期"+(day));  

}  


//獲取當前時間(精確到天)且判斷季節

    private void getCurrentTime() {

        SimpleDateFormat sDateFormat = new SimpleDateFormat("yyyy-MM-dd");

        String date = sDateFormat.format(new java.util.Date());

        System.out.println("date=" + date);

        String dates[] = date.split("-");

        System.out.println("dates[0]=" + dates[0]);

        System.out.println("dates[1]=" + dates[1]);

        System.out.println("dates[2]=" + dates[2]);

    System.out.println("---------------------");  

    System.out.println("dates[0]=" + Integer.valueOf(dates[0]));  
    System.out.println("dates[1]=" + Integer.valueOf(dates[1]));  
    System.out.println("dates[2]=" + Integer.valueOf(dates[2]));  

    int month = Integer.valueOf(dates[1]);  
    String season = null;  
    if (month == 12 || month == 1 || month == 2) {  
        season="冬天";  
    } else if(month == 3 || month == 4 || month == 5){  
        season="春天";  
    } else if(month == 6 || month == 7 || month == 8) {  
        season="夏天";  
    }else {  
        season="秋天";  
    }  

    System.out.println("季節:"+season);  
}  


}  </pre>