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; 
 
public class DateTimePickDialogUtil implements OnDateChangedListener, 
    OnTimeChangedListener { 
  private DatePicker datePicker; 
  private TimePicker timePicker; 
  private AlertDialog ad; 
  private String dateTime; 
  private String initDateTime; 
  private Activity activity; 
   
  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)); 
  } 
   
  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); 
  } 
   
  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; 
  } 
   
  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; 
 
public class DateTimePickerActivity extends Activity { 
   
  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

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