Android 日期控件的简单实现

言语不多，直接看代码：main.xml文件代码

<?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;           }       }    };}

 

 显示效果：如图