Android日历以字符串[复制]获取当前星期几

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这个问题在这里已有答案：

Android: how to get the current day of the week (Monday, etc…) in the user's language? 8个答案

我试着通过这种方式得到一个带有实际工作日名称的字符串：

Calendar c = Calendar.getInstance(); int dayOfWeek = c.get(Calendar.DAY_OF_WEEK); if (c.get(Calendar.MONDAY) == dayOfWeek) weekDay = "monday"; else if (c.get(Calendar.TUESDAY) == dayOfWeek) weekDay = "tuesday"; else if (c.get(Calendar.WEDNESDAY) == dayOfWeek) weekDay = "wednesday"; else if (c.get(Calendar.THURSDAY) == dayOfWeek) weekDay = "thursday"; else if (c.get(Calendar.FRIDAY) == dayOfWeek) weekDay = "friday"; else if (c.get(Calendar.SATURDAY) == dayOfWeek) weekDay = "saturday"; else if (c.get(Calendar.SUNDAY) == dayOfWeek) weekDay = "sunday";

但weekDay总是保持为空，我实际上不知道为什么因为调试器说dayOfWeek是5所以我应该等于c.get(Calendar.THURSDAY)
答案就这么简单

sCalendar = Calendar.getInstance(); String dayLongName = sCalendar.getDisplayName(Calendar.DAY_OF_WEEK, Calendar.LONG, Locale.getDefault());

另一答案我通过执行以下操作完成了此操作：

String weekDay; SimpleDateFormat dayFormat = new SimpleDateFormat("EEEE", Locale.US); Calendar calendar = Calendar.getInstance(); weekDay = dayFormat.format(calendar.getTime());

使用“EEEE”的日期格式将返回完整的工作日名称，即星期二
使用“E”的日期格式将返回缩写名称，即Tue
在android中返回此格式的另一个好处是它将根据区域设置翻译工作日。

您将需要查看SimpleDateFormat以了解更多信息。我认为这是最干净的方法，因为你只需要获取字符串值就不需要switch或if语句。
另一答案您应该将dayOfWeek直接与Calendar.MONDAY等进行比较。请参阅下面的代码
另外，如果是其他的话，我已将括号括起来。不要依赖缩进代码流，即使你的if-else只有一个语句，也要明确地添加括号。

public static void main(String[] args) {String weekDay = ""; Calendar c = Calendar.getInstance(); int dayOfWeek = c.get(Calendar.DAY_OF_WEEK); if (Calendar.MONDAY == dayOfWeek) { weekDay = "monday"; } else if (Calendar.TUESDAY == dayOfWeek) { weekDay = "tuesday"; } else if (Calendar.WEDNESDAY == dayOfWeek) { weekDay = "wednesday"; } else if (Calendar.THURSDAY == dayOfWeek) { weekDay = "thursday"; } else if (Calendar.FRIDAY == dayOfWeek) { weekDay = "friday"; } else if (Calendar.SATURDAY == dayOfWeek) { weekDay = "saturday"; } else if (Calendar.SUNDAY == dayOfWeek) { weekDay = "sunday"; }System.out.println(weekDay); }

另一答案没有必要使用c.get

Calendar c = Calendar.getInstance(); int dayOfWeek = c.get(Calendar.DAY_OF_WEEK); if (Calendar.MONDAY == dayOfWeek) weekDay = "monday"; else if (Calendar.TUESDAY == dayOfWeek) weekDay = "tuesday"; else if (Calendar.WEDNESDAY == dayOfWeek) weekDay = "wednesday"; else if (Calendar.THURSDAY == dayOfWeek) weekDay = "thursday"; else if (Calendar.FRIDAY == dayOfWeek) weekDay = "friday"; else if (Calendar.SATURDAY == dayOfWeek) weekDay = "saturday"; else if (Calendar.SUNDAY == dayOfWeek) weekDay = "sunday"; System.out.println(weekDay);

【Android日历以字符串[复制]获取当前星期几】并输出：

thursday

如果您尝试使用此代码使用c.get打印值，则可以看到错误

System.out.println(c.get(Calendar.MONDAY)); System.out.println(c.get(Calendar.TUESDAY)); System.out.println(c.get(Calendar.WEDNESDAY)); System.out.println(c.get(Calendar.THURSDAY)); System.out.println(c.get(Calendar.FRIDAY)); System.out.println(c.get(Calendar.SATURDAY)); System.out.println(c.get(Calendar.SUNDAY));

比如我得到：

7 33 3 15 227 5 2013

结果将是不正确的，在我的情况下，如果我使用你的代码，我将Sunday作为weekDay。
另一答案只需执行以下操作：

Date date = new Date(); CharSequence time = DateFormat.format("EEEE", date.getTime()); // gives like (Wednesday)

另一答案试试这个

import java.text.DateFormatSymbols; import java.util.Date; ... String[] weekdays = new DateFormatSymbols().getWeekdays(); String[] month = new DateFormatSymbols().getMonths(); System.outprintln(weekdays[date.getDay()+1]+","+month[date.getMonth()]+" "+date.getDate());