日期对话框DatePickerDialog

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在Android应用中，设置日期和时间是非常简单的事，由日期和时间对话框控件搞定。

一、界面

　　1、打开“src/com.genwoxue.datetimediy/active_main.java”文件。

　　然后输入以下代码：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/LinearLayout01"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >    <EditText        android:id="@+id/et"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:enabled="false"        android:cursorVisible="true" />            <Button        android:id="@+id/dateBtn"        android:layout_width="fill_parent"          android:layout_height="wrap_content"        android:text="@string/date" />  <!-- fill_parent宽度填充整个屏幕 -->    <Button        android:id="@+id/timeBtn"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="@string/time" />    <DigitalClock        android:id="@+id/digitalClock"        android:layout_width="fill_parent"        android:textSize="20sp"        android:gravity="center"        android:layout_height="wrap_content" />    <AnalogClock        android:id="@+id/analogClock"        android:layout_gravity="center"        android:layout_width="fill_parent"        android:layout_height="wrap_content" /></LinearLayout>

2、打开“src/com.genwoxue.datetimediy/MainActivity.java”文件。

　　然后输入以下代码：

import java.util.Calendar;import android.app.Activity;import android.app.DatePickerDialog;import android.app.Dialog;import android.app.TimePickerDialog;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.DatePicker;import android.widget.EditText;import android.widget.TimePicker;public class MainActivity extends Activity {private Button dateBtn = null;private Button timeBtn = null;private EditText et = null;private final static int DATE_DIALOG = 0;private final static int TIME_DIALOG = 1;private Calendar c = null;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);et = (EditText) findViewById(R.id.et);dateBtn = (Button) findViewById(R.id.dateBtn);timeBtn = (Button) findViewById(R.id.timeBtn);dateBtn.setOnClickListener(new View.OnClickListener() {//这样写不用import android.view.View.OnClickListener;@SuppressWarnings("deprecation")@Overridepublic void onClick(View v) {showDialog(DATE_DIALOG);//废弃的自带方法}});timeBtn.setOnClickListener(new OnClickListener() {//这样写要import android.view.View.OnClickListener;@Overridepublic void onClick(View arg0) {showDialog(TIME_DIALOG);}});}//创建日期及时间选择对话框protected Dialog onCreateDialog(int id){Dialog dialog = null;switch(id){case DATE_DIALOG:c = Calendar.getInstance();dialog = new DatePickerDialog(this,new DatePickerDialog.OnDateSetListener() {@Overridepublic void onDateSet(DatePicker dp, int year, int month, int dayOfMonth) {et.setText("您选择了："+year+"年"+(month+1)+"月"+dayOfMonth+"日");}}, c.get(Calendar.YEAR),//传入年份  c.get(Calendar.MONTH),//传入月份  c.get(Calendar.DAY_OF_MONTH));//传入天数break;case TIME_DIALOG:c = Calendar.getInstance();dialog = new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {@Overridepublic void onTimeSet(TimePicker view, int hourOfDay, int minute) {et.setText("您选择了："+hourOfDay+"时"+minute+"分");}}, c.get(Calendar.HOUR_OF_DAY),   c.get(Calendar.MINUTE),    false);break;}return dialog;}}

2、运行，显示界面：

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