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app/src/main/java/com/ttstd/dialer/utils/TimeUtils.java

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+package com.ttstd.dialer.utils;
+
+import java.util.Calendar;
+import java.util.Date;
+
+public class TimeUtils {
+    // 根据日期取得星期几
+    public static String getWeek() {
+        Date date = new Date();
+        String[] weeks = {"星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"};
+        Calendar cal = Calendar.getInstance();
+        cal.setTime(date);
+        int weekIndex = cal.get(Calendar.DAY_OF_WEEK) - 1;
+        if (weekIndex < 0) {
+            weekIndex = 0;
+        }
+        return weeks[weekIndex];
+    }
+}