1

ユーザーの生年月日を選択するために日付ピッカーダイアログを使用しているため、ダイアログを表示できます。ただし、ユーザーは現在の日付よりも年、日付、または月を増やすことはできません。これどうやってするの？

これが私のコードです：

private int mYear;
     private int mMonth;
     private int mDay;
     static final int DATE_DIALOG_ID = 1;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);
             setContentView(R.layout.main);   

             Button pickDate = (Button) findViewById(R.id.but);
             pickDate.setOnClickListener(new View.OnClickListener() {
                     public void onClick(View v) {
                             showDialog(DATE_DIALOG_ID);
                     }
             });
             final Calendar c = Calendar.getInstance();
             mYear = c.get(Calendar.YEAR);
             mMonth = c.get(Calendar.MONTH);
             mDay = c.get(Calendar.DAY_OF_MONTH);             
     }
     @Override
     protected Dialog onCreateDialog(int id) {
             switch (id) {
             case DATE_DIALOG_ID:
                     return new DatePickerDialog(this,
                             mDateSetListener,
                             mYear, mMonth, mDay);
             }
             return null;
     }
     protected void onPrepareDialog(int id, Dialog dialog) {
             switch (id) {
             case DATE_DIALOG_ID:
                     ((DatePickerDialog) dialog).updateDate(mYear, mMonth, mDay);
                     break;
             }
     }    

     private DatePickerDialog.OnDateSetListener mDateSetListener =
             new DatePickerDialog.OnDateSetListener() {
             public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {

                        if (year > mYear)
                        view.updateDate(mYear, mMonth, mDay);

                        if (monthOfYear > mMonth && year == mYear)
                        view.updateDate(mYear, mMonth, mDay);

                        if (dayOfMonth > mDay && year == mYear && monthOfYear == mMonth)
                        view.updateDate(mYear, mMonth, mDay);
             }
     };

ありがとうございました。

4

3 に答える 3

5 
@Override
     protected Dialog onCreateDialog(int id) {
             switch (id) {
             case DATE_DIALOG_ID:
                     DatePickerDialog _date =  new DatePickerDialog(this,  mDateSetListener,
                             mYear, mMonth, mDay){
                @Override
                public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth)
                {   
                     if (year > mYear)
                        view.updateDate(mYear, mMonth, mDay);

                        if (monthOfYear > mMonth && year == mYear)
                        view.updateDate(mYear, mMonth, mDay);

                        if (dayOfMonth > mDay && year == mYear && monthOfYear == mMonth)
                        view.updateDate(mYear, mMonth, mDay);

                }
            };
            return _date;
     }
     }

将来の日付を制限するには、上記の oncreate ダイアログを使用する必要があります

private DatePickerDialog.OnDateSetListener mDateSetListener =
        new DatePickerDialog.OnDateSetListener() {
        @Override
        public void onDateSet(DatePicker view, int year, 
                int monthOfYear, int dayOfMonth) {
                      //do your stuff when user clicks on set button in dialog  
        }
    };
于 2012-04-26T08:11:37.193 に答える
0 
1. Since API level 11 there is a method for that:
    DatePicker.setMaxDate(long maxDate) 

2. If it has to work in previous versions, use this method:
    public void init(int year, int monthOfYear, int dayOfMonth, DatePicker.OnDateChangedListener onDateChangedListener)

無効な日付を最新の有効な日付に「リセット」する独自のOnDateChangedListenerを渡すことができます。

DatePicker picker = ... 
int year = ... 
int monthOfYear = ... 
int dayOfMonth = ... 
picker.init(year, monthOfYear, dayOfMonth, new DatePicker.OnDateChangedListener() { 

    @Override 
    public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) { 
        // check if current date is OK 
        boolean dateOk = ... 
        if (!dateOk) { 
            // correct the date, but be sure the corrected date is OK 
            // => otherwise you might get endless recursion 
            year = ... 
            monthOfYear = ... 
            dayOfMonth = ... 
            // update the date widget with the corrected date values 
            view.updateDate(year, monthOfYear, dayOfMonth); 
        } 
    } 
});
于 2012-04-26T07:56:58.150 に答える