Question

在我的应用程序中我正在尝试DatePicker设置日期。我想设置日期选择器最大日期是根据系统日期的今天日期。我不知道如何将日期选择器最大日期设置为今天date.May我知道实现目标的正确方法是什么？也许这个问题太基础了，但我找不到合适的解决方案。请帮帮我

这是我的代码：

    public class UserDob extends Activity {

    TextView tvDisplayDate;
     DatePicker datePickerBirthday;

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

        ActionBar ab = getActionBar(); 
        ab.setDisplayUseLogoEnabled(false);
        ab.setDisplayShowHomeEnabled(true);
        ab.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM); 
        ab.setCustomView(R.layout.actionbar);
        ab.setDisplayHomeAsUpEnabled(true);
        ColorDrawable colorDrawable = new ColorDrawable(Color.parseColor("#FFFFFF"));     
        ab.setBackgroundDrawable(colorDrawable);

        datePickerBirthday=(DatePicker)findViewById(R.id.dpResult);
        tvDisplayDate = (TextView)findViewById(R.id.textViewUserDate);

         int currentapiVersion = android.os.Build.VERSION.SDK_INT;
            if (currentapiVersion >= 11) {
                datePickerBirthday.setCalendarViewShown(false);
            }

            SimpleDateFormat sdfDateTime = new SimpleDateFormat("yyyy-MM-dd", Locale.US);
            String dateStr = sdfDateTime.format(new Date(System.currentTimeMillis()));

            String[] dateSplit = dateStr.split("-");
            int currentYear = Integer.parseInt(dateSplit[0]);
            int currentMonth = Integer.parseInt(dateSplit[1]);
            int currentDay = Integer.parseInt(dateSplit[2]);

            // to show date and day of week in the TextView
            setHumanReadableDate(currentYear, currentMonth, currentDay);

            // initialize date picker listener
            // currentMonth - 1, because on the picker, 0 is January
            datePickerBirthday.init(currentYear, currentMonth - 1, currentDay, birthdayListener);


    }
     // the date picker listener
   OnDateChangedListener birthdayListener = new OnDateChangedListener() {

       @Override
       public void onDateChanged(DatePicker birthDayDatePicker,
               int newYear, int newMonth, int newDay) {

           try{

               // currentMonth + 1, to retrieve proper month
               setHumanReadableDate(newYear, newMonth + 1, newDay);

           } catch (NullPointerException e) {
               e.printStackTrace();
           } catch (Exception e) {
               e.printStackTrace();
           }
       }
   };

   // show the user a better date format
   public void setHumanReadableDate(int newYear, int newMonth, int newDay){
       try {

           String clickedDate = newYear + "-" + newMonth + "-" + newDay;
           SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
           Date d = null;
            try {
                d = sdf.parse(clickedDate);
            } catch (java.text.ParseException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

           SimpleDateFormat sdfDateTime = new SimpleDateFormat("MMMM dd, yyyy 'is' EEEE", Locale.US);
           String dateStr = sdfDateTime.format(d);

           tvDisplayDate.setText(dateStr);

       } catch (ParseException e) {
           e.printStackTrace();
       }
   }
}

Answer 1

以上API 11 对于最小日期，您可以使用

android:minDate="mm/dd/yyyy"
or setMinDate(long time)

最长日期

android:maxDate="mm/dd/yyyy" // In XML
setMaxDate(new Date().getTime());// Current time

Answer 2

如果您使用的API级别高于11，则使用setMaxDate的{{1}}来设置mex日期。否则创建一个自定义DatePicker并覆盖DatePicker方法，并在此处应用您的验证

onDateSet

如何设置Max＆amp;最小日期在WHEEL DatePicker在Android中

2 个答案: