下周在android中实现

在我的示例项目中，我必须在星期一下周星期日实施文本视图（如5月6日>> 12 My）。 点击下一个按钮，它必须显示下周开始日期和结束日期（如5月13日>> 5月19日）。 我已使用以下代码实现了初始周视图

Calendar c = Calendar.getInstance(); c.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY); SimpleDateFormat df = new SimpleDateFormat("dd MMMM"); String printDate = df.format(c.getTime()); //gestureEvent.setText(reportDate); c.add(Calendar.DAY_OF_WEEK, 6); String printDate2 = df2.format(c.getTime()); gestureEvent.setText(reportDate +" >> "+reportDate2); 

点击下周按钮我已经完成了这个但是静态它只是一次尝试尝试:)

onclick将调用此函数goNextWeek（）

 public void goNextWeek() { Calendar c = Calendar.getInstance(); c.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY); c.add(Calendar.DAY_OF_WEEK, 6); System.out.println("End Date : " + c.getTime()); SimpleDateFormat df = new SimpleDateFormat("dd MMMM"); String reportDate = df.format(c.getTime()); gestureEvent.setText(reportDate); c.add(Calendar.DAY_OF_WEEK, dates); c.add(Calendar.DAY_OF_WEEK, 1); System.out.println("End Date asdfadf: " + c.getTime()); } 

请告诉我如何显示下周的开始和结束日期？

Answer 1

这是你的解决方案。

 Calendar mCalendar = new GregorianCalendar(); mCalendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY); SimpleDateFormat mDF = new SimpleDateFormat("dd MMMM"); String printDate = mDF.format(mCalendar.getTime()); mCalendar.add(Calendar.DAY_OF_MONTH, 6); String printDate2 = mDF.format(mCalendar.getTime()); System.out.println(printDate + " >> " + printDate2); gestureEvent.setText(printDate + " >> " + printDate2); 

---

更新按钮上的实现

写一个方法，将weekNumber作为params ..

 private static String getNextWeek(int weekFromToday) { Calendar mCalendar = new GregorianCalendar(); mCalendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY); mCalendar.set(Calendar.WEEK_OF_YEAR, mCalendar.get(Calendar.WEEK_OF_YEAR) + weekFromToday); SimpleDateFormat mDF = new SimpleDateFormat("dd MMMM"); String printDate = mDF.format(mCalendar.getTime()); System.out.println(printDate); //gestureEvent.setText(reportDate); mCalendar.add(Calendar.DAY_OF_MONTH, 6); String printDate2 = mDF.format(mCalendar.getTime()); System.out.println(printDate + " >> " + printDate2); return printDate + " >> " + printDate2; } 

现在宣布静态归档为

 private static int weekNumber = -1; 

按下按钮，在下面写下代码

 weekNumber = weekNumber + 1; gestureEvent.setText(getNextWeek(weekNumber)); 

这会奏效。

快乐编码:)

Answer 2

使用Joda-Time 2.3库，这种日期时间工作更容易。

如果您确实只想要没有时间组件的日期，请修改此代码以使用LocalDate类而不是DateTime 。

 // © 2013 Basil Bourque. This source code may be used freely forever by anyone taking full responsibility for doing so. // import org.joda.time.*; // import org.joda.time.format.*; DateTime today = new DateTime().withTimeAtStartOfDay(); // Monday DateTime monday = today.withDayOfWeek( DateTimeConstants.MONDAY ).withTimeAtStartOfDay(); if ( !(monday.isAfter( today )) ) { // If monday is today or earlier, move forward to future. monday = monday.plusWeeks( 1 ); } // Sunday DateTime sunday = today.withDayOfWeek( DateTimeConstants.SUNDAY ).withTimeAtStartOfDay(); if ( !(sunday.isAfter( today )) ) { // If sunday is today or earlier, move forward to future. sunday = sunday.plusWeeks( 1 ); } System.out.println( "today: " + today ); System.out.println( "Monday: " + monday ); System.out.println( "Sunday: " + sunday ); 

跑的时候……

 today: 2013-12-08T00:00:00.000-08:00 Monday: 2013-12-09T00:00:00.000-08:00 Sunday: 2013-12-15T00:00:00.000-08:00