我正在使用android 1.5中的DatePicker。我试图设置最大和最小日期。最小日期应该是当前日期,最大日期应该是我将从字符串提供的日期为maxYear,maxMonth,maxDay。(假设今天日期= 2011年12月30日,但它选择29/12/2011)
一切工作正常,最小日期。因为它只显示当前日期。但是在选择器上使用减号按钮进行选择时,它会选择一个小于今天日期的日期。 在最大日期选择的情况下,它选择的日期,月份和年份超过最大日期。
如何限制用户不要选择少于最小日期和最长日期。我必须提出什么额外的条件才能让它变得完美?
enter code here
///Whole code same
mport java.sql.Date;
import java.util.Calendar;
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.TimePicker;
import android.widget.Toast;
import android.widget.DatePicker.OnDateChangedListener;
public class DatePickerActivity extends Activity implements Button.OnClickListener {
public String dateOutput=null;
final Calendar c = Calendar.getInstance();
int minYear1 = c.get(Calendar.YEAR);
int minMonth1 = c.get(Calendar.MONTH);
int minDay1 = c.get(Calendar.DAY_OF_MONTH);
int maxYear = 2011;//
int maxMonth = 12;
int maxDay = 29;
int minYear = minYear1;
int minMonth = minMonth1;
int minDay = minDay1;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
DatePicker DateDP = (DatePicker) findViewById (R.id.ad_date_picker);
DateDP.init(minYear1, minMonth1, minDay1, new OnDateChangedListener()
{
public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth)
{
if (year < minYear)
view.updateDate(minYear, minMonth, minDay);
if (monthOfYear < minMonth && year == minYear )
view.updateDate(minYear, minMonth, minDay );
if (dayOfMonth < minDay && year == minYear && monthOfYear == minMonth)
view.updateDate(minYear, minMonth, minDay);
if (year > maxYear)
view.updateDate(maxYear, maxMonth, maxDay);
if (monthOfYear > maxMonth && year == maxYear)
view.updateDate(maxYear, maxMonth, maxDay);
if (dayOfMonth > maxDay && year == maxYear && monthOfYear == maxMonth)
view.updateDate(maxYear, maxMonth, maxDay);
dateOutput = String.format("Date Selected: %02d/%02d/%04d",
dayOfMonth, monthOfYear+1, year);
// Log.d("Debug", dateOutput);
Toast.makeText(DatePickerActivity.this,dateOutput, Toast.LENGTH_SHORT).show();
}}); // DateDP.init()
}
}
答案 0 :(得分:4)
这样,我解决了我的问题
DateDP.init(minYear, minMonth, minDay, new OnDateChangedListener()
{
public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth)
{
if (year > maxYear ||monthOfYear > maxMonth && year == maxYear||
dayOfMonth > maxDay && year == maxYear && monthOfYear == maxMonth){
// Toast.makeText(DatePickerActivity.this,"max year", Toast.LENGTH_SHORT).show();
view.updateDate(maxYear, maxMonth, maxDay);
dateOutput = String.format("%04d-%02d-%02d",
maxYear, maxMonth+1, maxDay);
//Toast.makeText(DatePickerActivity.this,"maxYear "+dateOutput, Toast.LENGTH_SHORT).show();
}else if(year < minYear ||monthOfYear < minMonth && year == minYear||
dayOfMonth < minDay && year == minYear && monthOfYear == minMonth){
//Toast.makeText(DatePickerActivity.this,"min year", Toast.LENGTH_SHORT).show();
view.updateDate(minYear, minMonth, minDay );
dateOutput = String.format("%04d-%02d-%02d",
minYear, minMonth+1, minDay);
//Toast.makeText(ManageShowing.this,dateOutput, Toast.LENGTH_SHORT).show();
}else{
//Toast.makeText(ManageShowing.this,"else", Toast.LENGTH_SHORT).show();
dateOutput = String.format("%04d-%02d-%02d",
year, monthOfYear+1, dayOfMonth);
// Toast.makeText(ManageShowing.this,dateOutput, Toast.LENGTH_SHORT).show();
}
mDateDisplay.setText(dateOutput);
}}); // DateDP.init()