Android-DatePickerDialog日期控件

Android--DatePickerDialog日期控件

package com.mrzhu.datedialog;import java.util.Calendar;import android.app.Activity;import android.app.DatePickerDialog;import android.app.DatePickerDialog.OnDateSetListener;import android.app.Dialog;import android.os.Bundle;import android.view.View;import android.widget.DatePicker;import android.widget.TextView;/** * DatePickerDialog,单击按钮调用setDate(),setDate()调用showDialog(int id) * showDialog(int id)调用onCreateDialog(int id)，onCreateDialog(int id) * 使用到回调函数setDateCallBack，setDateCallBack调用upDateDisplay()设置日期 * @author ZLQ * */public class DateDialogTestActivity extends Activity {private static final int DIALOG_DATE_ID = 0;//用于显示日期的TextViewprivate TextView tv_set_date;//当前系统的年月日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);        tv_set_date = (TextView) findViewById(R.id.tv_set_date);        Calendar calendar = Calendar.getInstance();        mYear = calendar.get(Calendar.YEAR);        mMonth = calendar.get(Calendar.MONTH);        mDay = calendar.get(Calendar.DAY_OF_MONTH);        //updateDiaplay()把日期显示到TextView上        updateDiaplay();    }        private void updateDiaplay(){    StringBuffer stringBuffer = new StringBuffer();    stringBuffer.append(mYear).append("年").append(mMonth).append("月").append(mDay).append("日");    tv_set_date.setText(stringBuffer);    }    //单击按钮调用setDate()方法    public void setDate(View v){    setDate();    }    //setDate()方法调用showDialog(int id)方法，showDialog(int id)方法调用onCreateDialog(int id)private void setDate() {showDialog(DIALOG_DATE_ID);}@Overrideprotected Dialog onCreateDialog(int id) {switch(id){case DIALOG_DATE_ID://返回一个日期对话框return new DatePickerDialog(this, setDateCallBack, mYear, mMonth, mDay);}return super.onCreateDialog(id);}//回调函数，int year, int monthOfYear,int dayOfMonth三个参数为日期对话框设置的日期private OnDateSetListener setDateCallBack = new OnDateSetListener() {public void onDateSet(DatePicker view, int year, int monthOfYear,int dayOfMonth) {mYear = year;mMonth = monthOfYear;mDay = dayOfMonth;updateDiaplay();}};}

<?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" >    <TextView        android:id="@+id/tv_set_date"        android:layout_width="fill_parent"        android:layout_height="wrap_content" />    <Button        android:id="@+id/button1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:onClick="setDate"        android:text="@string/btn_set_date" /></LinearLayout>