Datepicker和timepicker - 设置最大值和最小值

Question

我想做一个类似提醒应用程序的东西.我想允许用户选择现在不是的日期和时间(至少从现在起5分钟),我还想禁止用户选择距离太远的日期 - 例如30天.我创建了datePicker和timePicker,使它们在按钮点击时弹出,但找不到设置最小值和最大值的方法.

 public void showDateDialog() {
 btnDate = (Button) findViewById(R.id.buttonDate);

    btnDate.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            showDialog(DATE_DIALOG_ID);
        }
    });
}
    public void showTimeDialog() {
    btnTime = (Button) findViewById(R.id.buttonTime);

    btnTime.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            showDialog(TIME_DIALOG_ID);
        }
    });
}
@Override
protected Dialog onCreateDialog(int id) {
    switch (id) {
        case DATE_DIALOG_ID:
            // create a new DatePickerDialog with values you want to show
            return new DatePickerDialog(this, datePickerListener, yearSet, monthSet, daySet);
        // create a new TimePickerDialog with values you want to show
        case TIME_DIALOG_ID:
            return new TimePickerDialog(this, timePickerListener, hourSet, minuteSet, false);
    }
    return null;
}
private DatePickerDialog.OnDateSetListener datePickerListener = new DatePickerDialog.OnDateSetListener() {
    @Override
    public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
        yearSet = year;
        monthSet = monthOfYear + 1;
        daySet = dayOfMonth;
        btnDate.setText(new SimpleDateFormat("DD").format(daySet) + "-" + new SimpleDateFormat("MMM").format(monthSet) + "-" + yearSet);
    }
};
private TimePickerDialog.OnTimeSetListener timePickerListener = new TimePickerDialog.OnTimeSetListener() {
    @Override
    public void onTimeSet(TimePicker view, int hour, int minute) {
        hourSet = hour;
        minuteSet = minute;
        btnTime.setText(hourSet + ":" + new SimpleDateFormat("MM").format(hourSet));
    }
};

Answer 1

btnDate.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        final DatePickerDialog.OnDateSetListener datePickerListener = new DatePickerDialog.OnDateSetListener() {
            @Override
            public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {

            }
        };

        Calendar c = Calendar.getInstance();
        int mYear = c.get(Calendar.YEAR);
        int mMonth = c.get(Calendar.MONTH);
        int mDay = c.get(Calendar.DAY_OF_MONTH);

        final DatePickerDialog datePickerDialog = new DatePickerDialog(
                Main23Activity.this, datePickerListener,
                mYear, mMonth, mDay);
        DatePicker datePicker = datePickerDialog.getDatePicker();

        c.add(Calendar.MONTH, +1);
        long oneMonthAhead = c.getTimeInMillis();
        datePicker.setMaxDate(oneMonthAhead);
        datePicker.setMinDate(System.currentTimeMillis() - 1000);
        datePickerDialog.show();

    }
});

btnTime.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        TimePickerDialog.OnTimeSetListener timePickerListener = new TimePickerDialog.OnTimeSetListener() {
            @Override
            public void onTimeSet(TimePicker view, int hour, int minute) {

            }
        };
        Calendar c = Calendar.getInstance();

        final TimePickerDialog timePickerDialog = new TimePickerDialog(Main23Activity.this,timePickerListener,
                c.get(Calendar.HOUR_OF_DAY),c.get(Calendar.MINUTE)+5,false);
        timePickerDialog.show();

    }
});

您需要检查用户是否选择今天日期,然后时间小于当前时间条件.

Answer 2

对于DataOicker，请尝试此

public class MainActivity extends Activity {

    TextView txtDatePicker;
    Calendar cal,cal1;
    long maxDate;
    Date date;

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

        cal = Calendar.getInstance();
        cal1 = Calendar.getInstance();

        txtDatePicker = (TextView) findViewById(R.id.txtDatePicker);
        txtDatePicker.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                DatePickerDialog dialog = new DatePickerDialog(MainActivity.this, new OnDateSetListener() {

                    @Override
                    public void onDateSet(DatePicker arg0, int arg1, int arg2, int arg3) {
                        // TODO Auto-generated method stub
                        Toast.makeText(MainActivity.this, ""+arg1+"/"+(arg2+1)+"/"+arg3, Toast.LENGTH_SHORT).show();
                    }
            }, cal.YEAR, cal.MONTH, cal.DAY_OF_MONTH);
            dialog.getDatePicker().setMinDate(System.currentTimeMillis());
            cal1.add(Calendar.YEAR, 5);
            dialog.getDatePicker().setMaxDate(cal1.getTimeInMillis());
            dialog.show();
        }
    });
  }
}

对于TimePicker，请尝试以下示例