android中在java代码中获得每日,每周,每月的0点和24点的时间戳

//获得本周一0点时间
public static int getTimesWeekmorning(){
Calendar cal = Calendar.getInstance();
cal.set(cal.get(Calendar.YEAR),cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0,0);
cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
return (int) (cal.getTimeInMillis()/1000);
}
//获得本周日24点时间
public static int getTimesWeeknight(){
Calendar cal = Calendar.getInstance();
cal.set(cal.get(Calendar.YEAR),cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0,0);
cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
return (int) ((cal.getTime().getTime()+ (7 * 24 * 60 * 60 * 1000))/1000);
}
//获得本月第一天0点时间
public static int getTimesMonthmorning(){
Calendar cal = Calendar.getInstance();
cal.set(cal.get(Calendar.YEAR),cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0,0);
cal.set(Calendar.DAY_OF_MONTH,cal.getActualMinimum(Calendar.DAY_OF_MONTH));
return (int) (cal.getTimeInMillis()/1000);
}
//获得本月最后一天24点时间
public static int getTimesMonthnight(){
Calendar cal = Calendar.getInstance();
cal.set(cal.get(Calendar.YEAR),cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0,0);
cal.set(Calendar.DAY_OF_MONTH,cal.getActualMaximum(Calendar.DAY_OF_MONTH));
cal.set(Calendar.HOUR_OF_DAY, 24);
return (int) (cal.getTimeInMillis()/1000);

//获得当天0点时间
public static int getTimesmorning(){
Calendar cal = Calendar.getInstance();
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.MILLISECOND, 0);
return (int) (cal.getTimeInMillis()/1000);
}
//获得当天24点时间
public static int getTimesnight(){
Calendar cal = Calendar.getInstance();
cal.set(Calendar.HOUR_OF_DAY, 24);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.MILLISECOND, 0);
return (int) (cal.getTimeInMillis()/1000);
}