Android自定义DataTimePicker实例代码（日期选择器）

package com.wwj.datetimepicker; 
 
import java.text.simpledateformat; 
import java.util.calendar; 
 
import android.app.activity; 
import android.app.alertdialog; 
import android.content.dialoginterface; 
import android.widget.datepicker; 
import android.widget.datepicker.ondatechangedlistener; 
import android.widget.edittext; 
import android.widget.linearlayout; 
import android.widget.timepicker; 
import android.widget.timepicker.ontimechangedlistener; 
 
/** 
 * 日期时间选择控件 使用方法： private edittext inputdate;//需要设置的日期时间文本编辑框 private string 
 * initdatetime="2012年9月3日 14:44",//初始日期时间值 在点击事件中使用： 
 * inputdate.setonclicklistener(new onclicklistener() { 
 * 
 * @override public void onclick(view v) { datetimepickdialogutil 
 *      datetimepickdialog=new 
 *      datetimepickdialogutil(sinvestigateactivity.this,initdatetime); 
 *      datetimepickdialog.datetimepickdialog(inputdate); 
 * 
 *      } }); 
 * 
 * @author 
 */ 
public class datetimepickdialogutil implements ondatechangedlistener, 
    ontimechangedlistener { 
  private datepicker datepicker; 
  private timepicker timepicker; 
  private alertdialog ad; 
  private string datetime; 
  private string initdatetime; 
  private activity activity; 
 
  /** 
   * 日期时间弹出选择框构造函数 
   * 
   * @param activity 
   *      ：调用的父activity 
   * @param initdatetime 
   *      初始日期时间值，作为弹出窗口的标题和日期时间初始值 
   */ 
  public datetimepickdialogutil(activity activity, string initdatetime) { 
    this.activity = activity; 
    this.initdatetime = initdatetime; 
 
  } 
 
  public void init(datepicker datepicker, timepicker timepicker) { 
    calendar calendar = calendar.getinstance(); 
    if (!(null == initdatetime || "".equals(initdatetime))) { 
      calendar = this.getcalendarbyinintdata(initdatetime); 
    } else { 
      initdatetime = calendar.get(calendar.year) + "年" 
          + calendar.get(calendar.month) + "月" 
          + calendar.get(calendar.day_of_month) + "日 " 
          + calendar.get(calendar.hour_of_day) + ":" 
          + calendar.get(calendar.minute); 
    } 
 
    datepicker.init(calendar.get(calendar.year), 
        calendar.get(calendar.month), 
        calendar.get(calendar.day_of_month), this); 
    timepicker.setcurrenthour(calendar.get(calendar.hour_of_day)); 
    timepicker.setcurrentminute(calendar.get(calendar.minute)); 
  } 
 
  /** 
   * 弹出日期时间选择框方法 
   * 
   * @param inputdate 
   *      :为需要设置的日期时间文本编辑框 
   * @return 
   */ 
  public alertdialog datetimepickdialog(final edittext inputdate) { 
    linearlayout datetimelayout = (linearlayout) activity 
        .getlayoutinflater().inflate(r.layout.common_datetime, null); 
    datepicker = (datepicker) datetimelayout.findviewbyid(r.id.datepicker); 
    timepicker = (timepicker) datetimelayout.findviewbyid(r.id.timepicker); 
    init(datepicker, timepicker); 
    timepicker.setis24hourview(true); 
    timepicker.setontimechangedlistener(this); 
 
    ad = new alertdialog.builder(activity) 
        .settitle(initdatetime) 
        .setview(datetimelayout) 
        .setpositivebutton("设置", new dialoginterface.onclicklistener() { 
          public void onclick(dialoginterface dialog, int whichbutton) { 
            inputdate.settext(datetime); 
          } 
        }) 
        .setnegativebutton("取消", new dialoginterface.onclicklistener() { 
          public void onclick(dialoginterface dialog, int whichbutton) { 
            inputdate.settext(""); 
          } 
        }).show(); 
 
    ondatechanged(null, 0, 0, 0); 
    return ad; 
  } 
 
  public void ontimechanged(timepicker view, int hourofday, int minute) { 
    ondatechanged(null, 0, 0, 0); 
  } 
 
  public void ondatechanged(datepicker view, int year, int monthofyear, 
      int dayofmonth) { 
    // 获得日历实例 
    calendar calendar = calendar.getinstance(); 
 
    calendar.set(datepicker.getyear(), datepicker.getmonth(), 
        datepicker.getdayofmonth(), timepicker.getcurrenthour(), 
        timepicker.getcurrentminute()); 
    simpledateformat sdf = new simpledateformat("yyyy年mm月dd日 hh:mm"); 
 
    datetime = sdf.format(calendar.gettime()); 
    ad.settitle(datetime); 
  } 
 
  /** 
   * 实现将初始日期时间2012年07月02日 16:45 拆分成年 月 日 时 分 秒,并赋值给calendar 
   * 
   * @param initdatetime 
   *      初始日期时间值 字符串型 
   * @return calendar 
   */ 
  private calendar getcalendarbyinintdata(string initdatetime) { 
    calendar calendar = calendar.getinstance(); 
 
    // 将初始日期时间2012年07月02日 16:45 拆分成年 月 日 时 分 秒 
    string date = splitestring(initdatetime, "日", "index", "front"); // 日期 
    string time = splitestring(initdatetime, "日", "index", "back"); // 时间 
 
    string yearstr = splitestring(date, "年", "index", "front"); // 年份 
    string monthandday = splitestring(date, "年", "index", "back"); // 月日 
 
    string monthstr = splitestring(monthandday, "月", "index", "front"); // 月 
    string daystr = splitestring(monthandday, "月", "index", "back"); // 日 
 
    string hourstr = splitestring(time, ":", "index", "front"); // 时 
    string minutestr = splitestring(time, ":", "index", "back"); // 分 
 
    int currentyear = integer.valueof(yearstr.trim()).intvalue(); 
    int currentmonth = integer.valueof(monthstr.trim()).intvalue() - 1; 
    int currentday = integer.valueof(daystr.trim()).intvalue(); 
    int currenthour = integer.valueof(hourstr.trim()).intvalue(); 
    int currentminute = integer.valueof(minutestr.trim()).intvalue(); 
 
    calendar.set(currentyear, currentmonth, currentday, currenthour, 
        currentminute); 
    return calendar; 
  } 
 
  /** 
   * 截取子串 
   * 
   * @param srcstr 
   *      源串 
   * @param pattern 
   *      匹配模式 
   * @param indexorlast 
   * @param frontorback 
   * @return 
   */ 
  public static string splitestring(string srcstr, string pattern, 
      string indexorlast, string frontorback) { 
    string result = ""; 
    int loc = -1; 
    if (indexorlast.equalsignorecase("index")) { 
      loc = srcstr.indexof(pattern); // 取得字符串第一次出现的位置 
    } else { 
      loc = srcstr.lastindexof(pattern); // 最后一个匹配串的位置 
    } 
    if (frontorback.equalsignorecase("front")) { 
      if (loc != -1) 
        result = srcstr.substring(0, loc); // 截取子串 
    } else { 
      if (loc != -1) 
        result = srcstr.substring(loc + 1, srcstr.length()); // 截取子串 
    } 
    return result; 
  } 
 
} 

package com.wwj.datetimepicker; 
 
import android.app.activity; 
import android.os.bundle; 
import android.view.view; 
import android.view.view.onclicklistener; 
import android.widget.edittext; 
 
/** 
 * 时间拾取器界面 
 * 
 * @author wwj_748 
 * 
 */ 
public class datetimepickeractivity extends activity { 
  /** called when the activity is first created. */ 
  private edittext startdatetime; 
  private edittext enddatetime; 
 
  private string initstartdatetime = "2013年9月3日 14:44"; // 初始化开始时间 
  private string initenddatetime = "2014年8月23日 17:44"; // 初始化结束时间 
 
  @override 
  public void oncreate(bundle savedinstancestate) { 
    super.oncreate(savedinstancestate); 
    setcontentview(r.layout.main); 
 
    // 两个输入框 
    startdatetime = (edittext) findviewbyid(r.id.inputdate); 
    enddatetime = (edittext) findviewbyid(r.id.inputdate2); 
 
    startdatetime.settext(initstartdatetime); 
    enddatetime.settext(initenddatetime); 
 
    startdatetime.setonclicklistener(new onclicklistener() { 
      public void onclick(view v) { 
 
        datetimepickdialogutil datetimepickdialog = new datetimepickdialogutil( 
            datetimepickeractivity.this, initenddatetime); 
        datetimepickdialog.datetimepickdialog(startdatetime); 
 
      } 
    }); 
 
    enddatetime.setonclicklistener(new onclicklistener() { 
 
      public void onclick(view v) { 
        datetimepickdialogutil datetimepickdialog = new datetimepickdialogutil( 
            datetimepickeractivity.this, initenddatetime); 
        datetimepickdialog.datetimepickdialog(enddatetime); 
      } 
    }); 
  } 
} 

<?xml version="1.0" encoding="utf-8"?> 
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" 
  android:layout_width="fill_parent" 
  android:layout_height="fill_parent" 
  android:orientation="vertical" > 
 
  <datepicker 
    android:id="@+id/datepicker" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:calendarviewshown="false" /> 
 
  <timepicker 
    android:id="@+id/timepicker" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" /> 
 
</linearlayout>