日期常量类

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import android.annotation.SuppressLint;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;/** * 日期常量类 *  * @author Lisn *  */@SuppressLint("SimpleDateFormat")public class MyDateUtil {/** * 转换日期格式为yyyy-MM-dd */public static String getChangeDateFormat(Date date) {String str = null;if (date != null && !"".equals(date)) {SimpleDateFormat sd = new SimpleDateFormat("yyyy-MM-dd");str = sd.format(date);}return str;}/** * 转换日期格式为HH:mm */public static String getChangeTimeFormat(Date date) {String str = null;if (date != null && !"".equals(date)) {SimpleDateFormat sd = new SimpleDateFormat("HH:mm");str = sd.format(date);}return str;}/** * 获取当前为星期几 *  * @param date * @return */public static String getChangeWeekFormat(Date date) {Calendar c = Calendar.getInstance();c.setTime(date);int hour = c.get(Calendar.DAY_OF_WEEK);String str = "" + hour;if ("1".equals(str)) {str = "星期日";} else if ("2".equals(str)) {str = "星期一";} else if ("3".equals(str)) {str = "星期二";} else if ("4".equals(str)) {str = "星期三";} else if ("5".equals(str)) {str = "星期四";} else if ("6".equals(str)) {str = "星期五";} else if ("7".equals(str)) {str = "星期六";}return str;}}
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