Android自己定义DataTimePicker（日期选择器）

Android自己定义DataTimePicker（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自己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己定义一个日期选择器，能够让用户同一时候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。

自己定义一个类：

/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 用法： private EditText inputDate;//须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，作为弹出窗体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
	 *            :为须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"; // 初始化開始时间
	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);
			}
		});
	}
}

自己定义界面：

/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>

源代码下载：http://download.csdn.net/detail/wwj_748/7806993