4.3中的DatePicker即使单击取消按钮也会设置日期

Question

我有一个日期选择器。 datepicker在除android 4.3之外的所有设备上都能正常工作。当我点击datepicker的取消按钮时，设置日期而不是cacelling本身。这是我的代码。

DatePickerDialog datepicker = new DatePickerDialog(c,
                new OnDateSetListener() {
                    @Override
                    public void onDateSet(android.widget.DatePicker view,
                            int year, int monthOfYear, int dayOfMonth) {
                        // TODO Auto-generated method stub
                        Calendar newDate = Calendar.getInstance();
                        newDate.set(year, monthOfYear, dayOfMonth);
                        tv.setText(CommonDateFunction.format(newDate.getTime(),
                                CommonDateFunction.FORMAT_DD_MMM_YYYY));
                    }
            }, newCalendar.get(Calendar.YEAR),
            newCalendar.get(Calendar.MONTH),
            newCalendar.get(Calendar.DAY_OF_MONTH));
    datepicker.show();

Answer 1

设置日期选择器的按钮以避免此错误。这是一个例子。

Calendar newCalendar = Calendar.getInstance();
        final DatePickerDialog datepicker = new DatePickerDialog(c,null, newCalendar.get(Calendar.YEAR),
                newCalendar.get(Calendar.MONTH),
                newCalendar.get(Calendar.DAY_OF_MONTH));
        datepicker.setCancelable(true);
        datepicker.setCanceledOnTouchOutside(true);
        datepicker.setButton(DialogInterface.BUTTON_POSITIVE, "OK",
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        Calendar newDate = Calendar.getInstance();
                         int dayOfMonth = datepicker.getDatePicker().getDayOfMonth();
                         int monthOfYear = datepicker.getDatePicker().getMonth() ;
                         int year = datepicker.getDatePicker().getYear();

                        newDate.set(year, monthOfYear, dayOfMonth);
                        tv.setText(CommonDateFunction.format(newDate.getTime(),
                                CommonDateFunction.FORMAT_DD_MMM_YYYY));
                    }
                });
        datepicker.setButton(DialogInterface.BUTTON_NEGATIVE, "Cancel", 
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.cancel();
                       // Log.d("Picker", "Cancel!");
                    }
                });
        datepicker.show();