Android自定义DataTimePicker实例代码（日期选择器）

笔者有一段时间没有发表关于Android的文章了，关于Android自定义组件笔者有好几篇想跟大家分享的，后期会记录在博客中。本篇博客给大家分享的是自定义一个日期选择器，可以让用户同时选择年月日和当前时间。

先看看效果：

实现的效果就是在同一个布局上显示日期选择和时间选择。

自定义一个类：

/DateTimePicker/src/com/wwj/datetimepicker/DateTimePickDialogUtil.java

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;
  } 

}

/DateTimePicker/src/com/wwj/datetimepicker/DateTimePickerActivity.java

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);
      }
    });
  }
}

自定义界面：

/DateTimePicker/res/layout/common_datetime.xml

<?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>

源码下载：demo

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。