DateTimePickDialogUtil.java

package com.streamlet.common.widget;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.widget.DatePicker;
import android.widget.DatePicker.OnDateChangedListener;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.TimePicker;
import android.widget.TimePicker.OnTimeChangedListener;

import com.streamlet.R;

import java.text.SimpleDateFormat;
import java.util.Calendar;

/** 
 * 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 TextView 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;  
    }  
  
}