Android 如何在应用程序中设置日期选择器对话

此代码仅在保存便笺时显示日期，不允许我为事件选择日期

您可以使用以下方式显示日期选择器对话框

SimpleDateFormat simpleDateFormat = new SimpleDateFormat(dd-MM-yyyy, hh:mm:ss, context. GetResources().getConfiguration().locale); 

simpleDateFormat.setTimeZone(TimeZone.getDefault());
return simpleDateFormat.format(new Date(myDate));

在OnClick方法中设置以下代码

// Global declaration
Calendar preferDate1 = new GregorianCalendar();
final Calendar c = Calendar.getInstance();
year = c.get(Calendar.YEAR);
month = c.get(Calendar.MONTH);
day = c.get(Calendar.DAY_OF_MONTH);
private int year, month, day;

并将其添加到MainClass中

DatePickerDialog dp = new DatePickerDialog(MainActivity.this, preferredDate1Picker, preferDate1.get(Calendar.YEAR), preferDate1.get(Calendar.MONTH), preferDate1.get(Calendar.DAY_OF_MONTH));
dp.getDatePicker().setMinDate(c.getTimeInMillis());//Only if You want to set min date
dp.show();

private final DatePickerDialog.OnDateSetListener preferredDate1Picker=new DatePickerDialog.OnDateSetListener（）{
@凌驾
公共void onDateSet（日期选择器视图，int-selectedYear，int-selectedMonth，int-selectedDay）{
preferDate1=新的公历日历（选择的年份、选择的月份、选择的日期）；
textview.setText（（selectedDay<10？“0”+String.valueOf（selectedDay）：String.valueOf（selectedDay））+“/”
+（selectedMonth+1<10？“0”+String.valueOf（（selectedMonth+1））：String.valueOf（（selectedMonth+1）））
+“/”+所选年份）；
}
};

日期选择器对话框代码在哪里？请检查：

private final DatePickerDialog.OnDateSetListener preferredDate1Picker = new DatePickerDialog.OnDateSetListener() {

    @Override
    public void onDateSet(DatePicker view, int selectedYear, int selectedMonth, int selectedDay) {
        preferDate1 = new GregorianCalendar(selectedYear, selectedMonth, selectedDay);

        textview.setText((selectedDay < 10 ? "0" + String.valueOf(selectedDay) : String.valueOf(selectedDay)) + "/"
            + (selectedMonth + 1 < 10 ? "0" + String.valueOf((selectedMonth + 1)) : String.valueOf((selectedMonth + 1)))
            + "/" + selectedYear);

    }
};