在我的申请中,我需要在 7-18岁之间设置年龄限制。我想显示选择范围有限的日期选择器。
如何使用此代码DatePicker
将同一任务编辑到日期选择器中我使用下面的代码来限制年份,但是当点击“+/-”按钮时,年份可以在限制范围之上/之下更改。我希望用户不应该增加或减少日期值。
return new DatePickerDialog(this,
mDateSetListener,
mYear-7, mMonth, mDay);
请帮助我设定7至18岁之间的出生日期限制,如果可能的话,请设置日期和月份。
另外,我如何设定最低年龄限制?
感谢。
答案 0 :(得分:5)
花了这么多时间后,终于得到了解决方案。
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mDateDisplay = (TextView) findViewById(R.id.dateDisplay);
mPickDate = (Button) findViewById(R.id.pickDate);
mPickDate.setOnClickListener(this);
final Calendar c = Calendar.getInstance();
mYear = c.get(Calendar.YEAR);
mMonth = c.get(Calendar.MONTH);
mDay = c.get(Calendar.DAY_OF_MONTH);
maxYear = mYear - 7;
maxMonth = mMonth;
maxDay = mDay;
minYear = mYear - 18;
minMonth = mMonth;
minDay = mDay;
// display the current date (this method is below)
updateDisplay(maxYear, maxMonth, maxDay);
}
private void updateDisplay(int year, int month, int day) {
// TODO Auto-generated method stub
mDateDisplay.setText(new StringBuilder()
// Month is 0 based so add 1
.append(month + 1).append("-").append(day).append("-")
.append(year).append(" "));
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
showDialog(DATE_DIALOG_ID);
}
private DatePickerDialog.OnDateSetListener mDateSetListener = new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int year, int monthOfYear,
int dayOfMonth) {
/*
* mYear = year;
* mMonth = monthOfYear;
* mDay = dayOfMonth;
*/
// updateDisplay();
if (year > maxYear ||monthOfYear > maxMonth && year == maxYear||
dayOfMonth > maxDay && year == maxYear && monthOfYear == maxMonth){
view.updateDate(maxYear, maxMonth, maxDay);
updateDisplay(maxYear, maxMonth, maxDay);
}
else if (year < minYear ||monthOfYear < minMonth && year == minYear||
dayOfMonth < minDay && year == minYear && monthOfYear == minMonth) {
view.updateDate(minYear, minMonth, minDay);
updateDisplay(minYear, minMonth, minDay);
}
else {
view.updateDate(year, monthOfYear, dayOfMonth);
updateDisplay(year, monthOfYear, dayOfMonth);
}
}
};
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case DATE_DIALOG_ID:
return new DatePickerDialog(this, mDateSetListener, mYear - 7,
mMonth, mDay);
}
return null;
}
}