Android 日期控件的简单实现

main.xml

<?xml version="1.0" encoding="utf-8"?>  
  
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
  
    android:orientation="vertical" android:layout_width="fill_parent"  
  
    android:layout_height="fill_parent">  
  
    <TextView android:layout_width="fill_parent"  
  
       android:layout_height="wrap_content" android:text="日期控件的使用DEMO" />  
  
    <LinearLayout android:orientation="horizontal"  
  
       android:layout_width="fill_parent" android:layout_height="wrap_content">  
  
       <EditText android:id="@+id/showDate" android:layout_width="200dip"  
  
           android:layout_height="wrap_content" />  
  
       <Button android:id="@+id/but_showDate" android:layout_width="100dip"  
  
           android:layout_height="wrap_content" android:text="选择日期" />  
  
    </LinearLayout>  
  
   
  
</LinearLayout>  

　　

MainActivity.java源代码：

package com.wanghf.demo;  
  
   
  
import java.util.Calendar;  
  
   
  
import android.app.Activity;  
  
import android.app.DatePickerDialog;  
  
import android.app.Dialog;  
  
import android.os.Bundle;  
  
import android.os.Handler;  
  
import android.os.Message;  
  
import android.view.View;  
  
import android.widget.Button;  
  
import android.widget.DatePicker;  
  
import android.widget.EditText;  
  
   
  
/** 
 
 * 日期控件的简单使用 
 
 * 
 
 * @author adminelco 
 
 * @time 2011-07-20 15:42:24 
 
 * 
 
 */  
  
public class MainActivity extends Activity {  
  
    private EditText showDate = null;  
  
    private Button pickDate = null;  
  
    private static final int DATE_DIALOG_ID = 1;  
  
    private static final int SHOW_DATAPICK = 0;  
  
    private int mYear;  
  
    private int mMonth;  
  
    private int mDay;  
  
   
  
    /** Called when the activity is first created. */  
  
    @Override  
  
    public void onCreate(Bundle savedInstanceState) {  
  
       super.onCreate(savedInstanceState);  
  
       setContentView(R.layout.main);  
  
       showDate = (EditText) findViewById(R.id.showDate);  
  
       pickDate = (Button) findViewById(R.id.but_showDate);  
  
       pickDate.setOnClickListener(new DateButtonOnClickListener());  
  
       final Calendar c = Calendar.getInstance();  
  
       mYear = c.get(Calendar.YEAR);  
  
       mMonth = c.get(Calendar.MONTH);  
  
       mDay = c.get(Calendar.DAY_OF_MONTH);  
  
       setDateTime();  
  
    }  
  
   
  
    private void setDateTime() {  
  
       final Calendar c = Calendar.getInstance();  
  
       mYear = c.get(Calendar.YEAR);  
  
       mMonth = c.get(Calendar.MONTH);  
  
       mDay = c.get(Calendar.DAY_OF_MONTH);  
  
   
  
       updateDisplay();  
  
    }  
  
   
  
    /** 
 
     * 更新日期 
 
     */  
  
    private void updateDisplay() {  
  
       showDate.setText(new StringBuilder().append(mYear).append(  
  
              (mMonth + 1) < 10 ? "0" + (mMonth + 1) : (mMonth + 1)).append(  
  
              (mDay < 10) ? "0" + mDay : mDay));  
  
    }  
  
   
  
    /** 
 
     * 日期控件的事件 
 
     */  
  
    private DatePickerDialog.OnDateSetListener mDateSetListener = new DatePickerDialog.OnDateSetListener() {  
  
       public void onDateSet(DatePicker view, int year, int monthOfYear,  
  
              int dayOfMonth) {  
  
           mYear = year;  
  
           mMonth = monthOfYear;  
  
           mDay = dayOfMonth;  
  
           updateDisplay();  
  
       }  
  
    };  
  
   
  
    /** 
 
     * 选择日期Button的事件处理 
 
     * 
 
     * @author Raul 
 
     * 
 
     */  
  
    class DateButtonOnClickListener implements  
  
           android.view.View.OnClickListener {  
  
       @Override  
  
       public void onClick(View v) {  
  
           Message msg = new Message();  
  
           if (pickDate.equals((Button) v)) {  
  
              msg.what = MainActivity.SHOW_DATAPICK;  
  
           }  
  
           MainActivity.this.saleHandler.sendMessage(msg);  
  
       }  
  
    }  
  
   
  
    @Override  
  
    protected Dialog onCreateDialog(int id) {  
  
       switch (id) {  
  
       case DATE_DIALOG_ID:  
  
           return new DatePickerDialog(this, mDateSetListener, mYear, mMonth,  
  
                  mDay);  
  
       }  
  
       return null;  
  
    }  
  
   
  
    @Override  
  
    protected void onPrepareDialog(int id, Dialog dialog) {  
  
       switch (id) {  
  
       case DATE_DIALOG_ID:  
  
           ((DatePickerDialog) dialog).updateDate(mYear, mMonth, mDay);  
  
           break;  
  
       }  
  
    }  
  
   
  
    /** 
 
     * 处理日期控件的Handler 
 
     */  
  
    Handler saleHandler = new Handler() {  
  
       @Override  
  
       public void handleMessage(Message msg) {  
  
           switch (msg.what) {  
  
           case MainActivity.SHOW_DATAPICK:  
  
              showDialog(DATE_DIALOG_ID);  
  
              break;  
  
           }  
  
       }  
  
    };  
  
} 

出处：http://blog.csdn.net/android_home/article/details/6620206