Question

我目前正在页面加载时以单独的布局显示今天的日期和日期以及明天的日期和日期。但我的要求是

1）无论我从Datepicker,中选择什么日期，它都应显示在第一种布局上

2）第二天的布局应显示第二天的日期。

我的第一个要求工作正常，没有任何问题。（即），无论我选择哪一天，它都会显示在第一个布局上。没问题，但是我的第二个要求有问题。

请考虑一下，如果我在DatePicker,上选择2018年5月25日，它会按预期显示在第一个布局上，但不是将第二天的日期显示为2018年5月26日，而是将其显示为2018年6月26日。但是我需要它以某种方式工作，如果我在Datepicker,中选择25-May-2018，则所选日期应显示在第一个布局上，而第二天的紧接日期（26-May-2018）应显示在下一个布局。这应该适用于我在Datepicker.

中选择的日期

我哪里出错了？

这是我的Activity。Java：

public class PrivacyPolicyActivity extends AppCompatActivity {

    LinearLayout layout1, layout2, layout3, todayLayout, tomorrowLayout;
    ImageView calendarImgView;
    TextView todayDate;
    TextView todayDay;
    TextView tommmorrowDate;
    TextView tommorrowDay;
    TextView todayLabel;
    TextView tommorrowlabel;
    DatePickerDialog datePickerDialog;
    Calendar calendar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_privacy_policy);

        calendar = Calendar.getInstance();
        Date today = calendar.getTime();
        calendar.add(Calendar.DAY_OF_YEAR, 1);
        Date tomorrow = calendar.getTime();

        final DateFormat dateFormat = new SimpleDateFormat("dd-MMM");

        DateFormat day = new SimpleDateFormat("EEEE");

        layout1 = (LinearLayout) findViewById(R.id.layout1);
        layout2 = (LinearLayout) findViewById(R.id.layout2);
        layout3 = (LinearLayout) findViewById(R.id.layout3);
        todayDate = (TextView) findViewById(R.id.todayDate);

        todayDate.setText(dateFormat.format(today));
        todayDay = (TextView) findViewById(R.id.todayDay);
        todayDay.setText(day.format(today));

        tommmorrowDate = (TextView) findViewById(R.id.tommmorrowDate);
        tommmorrowDate.setText(dateFormat.format(tomorrow));
        tommorrowDay = (TextView) findViewById(R.id.tommorrowDay);
        tommorrowDay.setText(day.format(tomorrow));

        todayLayout = (LinearLayout) findViewById(R.id.todayLayout);
        tomorrowLayout = (LinearLayout) findViewById(R.id.tomorrowLayout);

        todayLabel = (TextView) findViewById(R.id.todayLabel);
        tommorrowlabel = (TextView) findViewById(R.id.tommorrowlabel);
        calendarImgView = (ImageView) findViewById(R.id.calendarImgView);

        calendarImgView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Calendar calendar = Calendar.getInstance();
                int year = calendar.get(Calendar.YEAR);
                int month = calendar.get(Calendar.MONTH);
                int dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH);

                datePickerDialog = new DatePickerDialog(PrivacyPolicyActivity.this,
                        new DatePickerDialog.OnDateSetListener() {
                            @Override
                            public void onDateSet(DatePicker datePicker, int year, int month, int day) {

//                                SimpleDateFormat dateandmonth = new SimpleDateFormat("dd-MMM");
//                                Date date = new Date();
//                                String reqddate = dateandmonth.format(date);
                                //todayDate.setText(day + "/" + (month + 1) + "/" + year);

                                int cyear = datePicker.getYear();
                                int cmonth = datePicker.getMonth();
                                int cday = datePicker.getDayOfMonth();

                                Calendar cld = Calendar.getInstance();
                                cld.set(cyear, cmonth, cday);
                                SimpleDateFormat format = new SimpleDateFormat("dd-MMM");
                                String strDate = format.format(cld.getTime());
                                todayDate.setText(strDate);

                                SimpleDateFormat dayfmt = new SimpleDateFormat("EEEE");
                                String dayselected = dayfmt.format(cld.getTime());
                                todayDay.setText(dayselected);

                                int nextYear = datePicker.getYear() + 1;
                                int nextMonth = datePicker.getMonth() + 1;
                                int nextDay = datePicker.getDayOfMonth() + 1;

                                Calendar nextcld = Calendar.getInstance();
                                nextcld.set(nextYear, nextMonth, nextDay);

                                SimpleDateFormat tom_format = new SimpleDateFormat("dd-MMM");
                                String tom_date = tom_format.format(nextcld.getTime());
                                tommmorrowDate.setText(tom_date);

                                SimpleDateFormat day_fmt = new SimpleDateFormat("EEEE");
                                String tom_day = day_fmt.format(cld.getTime());
                                tommorrowDay.setText(tom_day);
                            }
                        }, year, month, dayOfMonth);

                datePickerDialog.show();
            }

        });
    }
}

Answer 1

为什么您还将月份和年份也增加1？

int nextYear = datePicker.getYear() + 1;
int nextMonth = datePicker.getMonth() + 1;
int nextDay = datePicker.getDayOfMonth() + 1;

第二天增加。

cld.add(Calendar.DATE, 1);

解决方案

 calendarImgView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Calendar calendar = Calendar.getInstance();
                int year = calendar.get(Calendar.YEAR);
                int month = calendar.get(Calendar.MONTH);
                int dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH);

                datePickerDialog = new DatePickerDialog(PrivacyPolicyActivity.this,
                        new DatePickerDialog.OnDateSetListener() {
                            @Override
                            public void onDateSet(DatePicker datePicker, int year, int month, int day) {


//                                SimpleDateFormat dateandmonth = new SimpleDateFormat("dd-MMM");


                                int cyear = datePicker.getYear();
                                int cmonth =datePicker .getMonth();
                                int cday = datePicker.getDayOfMonth();

                                Calendar cld  = Calendar.getInstance();
                                cld.set(cyear, cmonth, cday);
                                SimpleDateFormat format = new SimpleDateFormat("dd-MMM");
                                String strDate = format.format(cld.getTime());
                                todayDate.setText(strDate);

                                SimpleDateFormat dayfmt = new SimpleDateFormat("EEEE");
                                String dayselected = dayfmt.format(cld.getTime());
                                todayDay.setText(dayselected);


                                cld.add(Calendar.DATE, 1);

                                SimpleDateFormat day_fmt = new SimpleDateFormat("EEEE");
                                String tom_day = day_fmt.format(cld.getTime());
                                tommorrowDay.setText(tom_day);


                            }
                        },year,month,dayOfMonth);

                datePickerDialog.show();
            }





        });

Answer 2

在您的Datepicker回调中，放置以下代码以显示第二天。

Calendar calendar = Calendar.getInstance();

calendar.set(Calendar.DATE, datePicker.getDayOfMonth());
calendar.set(Calendar.MONTH, datePicker.getMonth());
calendar.set(Calendar.YEAR, datePicker.getYear());

calendar.add(Calendar.DATE, 1);

SimpleDateFormat tom_format = new SimpleDateFormat("dd-MMM");
String tom_date = tom_format.format(calendar);
tommmorrowDate.setText(tom_date);

如何在Android中的日期选择器对话框中显示所选日期之后的第二天的日期？

2 个答案: