Android datepicker min最大日期为api 11级之前

Question

我试图将Android中的日期选择器的最小和最大日期设置为API级别11之前.我使用以下代码:

mDatePickerField = startDatePickerDialog.getClass().getDeclaredField("mDatePicker");
mDatePickerField.setAccessible(true);

DatePicker startDatePickerInstance =(DatePicker)mDatePickerField.get(startDatePickerDialog);
startDatePickerInstance.init(mYearMin, mMonthMin, mDayMin, new DatePicker.OnDateChangedListener() {
    @Override
    public void onDateChanged(DatePicker datePicker, int i, int i1, int i2) {
        Date maxDate = new Date(mYearMax, mMonthMax, mDayMax, 0, 0, 0);
        Date selectedDate = new Date(i, i1, i2, 0, 0, 0);
        if (selectedDate.after(maxDate)) {
            datePicker.updateDate(mYearMax, mMonthMax, mDayMax);                                        
        }
    }
}

但是,该updateDate方法onDateChanged再次触发,并且日期选择器未更新.
任何人都可以帮助解决问题吗？

Answer 1

您可以使用init datePicker方法设置范围.最小值示例:

// Calendar
this.calendar = new GregorianCalendar();
this.datePicker = (DatePicker) findViewById(R.id.xxxxx);

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
    // (picker is a DatePicker)
    this.datePicker.setMinDate(this.calendar.getTimeInMillis());
} else {
    final int minYear = this.calendar.get(Calendar.YEAR);
    final int minMonth = this.calendar.get(Calendar.MONTH);
    final int minDay = this.calendar.get(Calendar.DAY_OF_MONTH);

    this.datePicker.init(minYear, minMonth, minDay,
            new OnDateChangedListener() {

                public void onDateChanged(DatePicker view, int year,
                        int month, int day) {
                    Calendar newDate = Calendar.getInstance();
                    newDate.set(year, month, day);

                    if (calendar.after(newDate)) {
                        view.init(minYear, minMonth, minDay, this);
                    }
                }
            });
    Log.w(TAG, "API Level < 11 so not restricting date range...");
}

Answer 2

此DatePicker自定义类允许我们指定最大和最小日期

public class DatePickerDialogWithMaxMinRange extends DatePickerDialog {

 static int maxYear=2005; 
 static int maxMonth=11;
 static int maxDay=31;

 int minYear=1955;
 int minMonth=0;
 int minDay=1;


public DatePickerDialogWithMaxMinRange(Context context,  OnDateSetListener callBack,int minYear,int minMonth,int minDay,int maxYear,int maxMonth,int maxDay) {
    super(context,callBack, maxYear, maxMonth, maxDay);
    this.minDay = minDay;
    this.minMonth = minMonth;
    this.minYear = minYear;
    DatePickerDialogWithMaxMinRange.maxDay = maxDay;
    DatePickerDialogWithMaxMinRange.maxMonth = maxMonth;
    DatePickerDialogWithMaxMinRange.maxYear = maxYear;
}

@Override
public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
    super.onDateChanged(view, year, monthOfYear, dayOfMonth);

        if (year > maxYear ||monthOfYear > maxMonth && year == maxYear||
                 dayOfMonth > maxDay && year == maxYear && monthOfYear == maxMonth){
            view.updateDate(maxYear, maxMonth, maxDay);
            }else if(year < minYear ||monthOfYear < minMonth && year == minYear||
                 dayOfMonth < minDay && year == minYear && monthOfYear == minMonth){
             view.updateDate(minYear, minMonth, minDay );
            }
}

}

//在Activity类或Fragment指定成员中使用此代码

private int intCurrentYear;
private int intCurrentMonth;
private int intCurrentDay;
private int intMaxYear;
private int intMaxMonth;
private int intMaxDay;
private int intMinYear;
private int intMinDay;
private int intMinMonth;

    DatePickerDialogWithMaxMinRange datePickerDialog= null;
DatePickerDialog.OnDateSetListener datePickerOnDateSetListener;
Calendar myCalendar;

//在onCreate或你想要的地方调用这个方法..

注意:您需要传递侦听器自定义datepickerdialog以在datepicker对话框中选择后更新日期

public void setDate() {
    /*
     * Initialise Listener for date set
     */

    datePickerOnDateSetListener = new DatePickerDialog.OnDateSetListener() {
        public void onDateSet(DatePicker view, int year, int monthOfYear,
                int dayOfMonth) {
            edtTxtPlayerBirthDay.setText(new StringBuilder().append(year)
                    .append("-").append(monthOfYear + 1).append("-")
                    .append(dayOfMonth));
        }
    };

    // initialise DatePicker 

    myCalendar = Calendar.getInstance();

    intCurrentYear = myCalendar.get(Calendar.YEAR);
    intCurrentMonth = myCalendar.get(Calendar.MONTH);
    intCurrentDay = myCalendar.get(Calendar.DAY_OF_MONTH);

    intMaxYear =  intCurrentYear - 2000;
    intMaxMonth = intCurrentMonth;
    intMaxDay =  intCurrentDay;

    intMinYear =  intCurrentYear - 1950;
    intMinMonth = intCurrentMonth;
    intMinDay =  intCurrentDay; 

    datePickerDialog = new DatePickerDialogWithMaxMinRange(
            context, datePickerOnDateSetListener,intMinYear,intMinMonth,intMinDay,intMaxYear,intMaxMonth,intMaxDay);
}

当创建日期选择器时,根据你的要求传递mindate和maxdate,以便在点击按钮时显示datepicker或任何其他控件将此代码放入onclicklistener ...

datePickerDialog.show();

Answer 3

找到了一种很酷的方式来设置min和max日期DatePickerDialog.适用于所有Android版本.您只需要返回DatePickerDialog基于Android版本的版本

protected Dialog onCreateDialog(int id)
{
    switch ( id )
    {
        case DATE_DIALOG_ID:
            DatePickerDialog dialog = null;
            if ( Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB )
            {
                dialog = new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener()
                {
                    @Override
                    public void onDateSet(DatePicker view, int selectedYear, int selectedMonth, int selectedDate)
                    {
                        mTextView.setText(selectedDate + "/" + selectedMonth + 1 + "/" + selectedYear);
                    }
                }, year, month - 1, date);
                Calendar currentDate = Calendar.getInstance();
                dialog.getDatePicker().setMaxDate(currentDate.getTimeInMillis());
                //If you need you can set min date too
            }
            else
            {
                dialog = new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener()
                {
                    @Override
                    public void onDateSet(DatePicker view, int selectedYear, int selectedMonth, int selectedDate)
                    {
                        mTextView.setText(selectedDate + "/" + selectedMonth + 1 + "/" + selectedYear);
                    }
                }, year, month - 1, date)
                {
                    @Override
                    public void onDateChanged(DatePicker view, int year, int month, int day)
                    {
                        if ( year <= maxYear && month + 1 <= maxMonth && date <= maxDate ) //meets your criteria
                        {
                            view.updateDate(year, month, date); //update the date picker to selected date
                        }
                        else
                        {
                            view.updateDate(maxYear, maxMonth - 1, maxDate); // or you update the date picker to previously selected date
                        }
                    }
                };
            }
            return dialog;
    }
    return null;
}

Answer 4

你不能。我处理这个问题的方法是使用 DatePicker 的 if 语句：

import android.os.Build.*;

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
    // (picker is a DatePicker)
    picker.setMinDate(...);
} else {
    Log.w(TAG, "API Level < 11 so not restricting date range...");
}

我最终没有为 TimePicker 做任何事情。

有什么好消息？

SimonVT 向后移植了 DatePicker 和 TimePicker，以便您可以在早期 API 级别上享受最新功能：

• https://github.com/SimonVT/android-datepicker
• https://github.com/SimonVT/android-timepicker