Android学习之监听日期和时间的改变

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">
	<EditText 
		android:id="@+id/input"
		android:layout_width="fill_parent"
		android:layout_height="wrap_content"/>
	<LinearLayout 
		xmlns:android="http://schemas.android.com/apk/res/android"
		android:orientation="horizontal" 
		android:layout_width="fill_parent"
		android:layout_height="fill_parent">
		<DatePicker
			android:id="@+id/date"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content" />
		<TimePicker
			android:id="@+id/time"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content" />
	</LinearLayout>
</LinearLayout>

package org.lxh.demo;

import android.app.Activity;
import android.os.Bundle;
import android.widget.DatePicker;
import android.widget.DatePicker.OnDateChangedListener;
import android.widget.EditText;
import android.widget.TimePicker;
import android.widget.TimePicker.OnTimeChangedListener;

public class MyDateTimeDemo extends Activity {
	private EditText input = null;
	private DatePicker date = null;
	private TimePicker time = null;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		super.setContentView(R.layout.main);
		this.input = (EditText) super.findViewById(R.id.input);
		this.date = (DatePicker) super.findViewById(R.id.date);
		this.time = (TimePicker) super.findViewById(R.id.time);
		this.time.setIs24HourView(true); // 采用24小时制显示时间
		this.time.setOnTimeChangedListener(new OnTimeChangedListenerImpl());
		this.date.init(this.date.getYear(), this.date.getMonth(),
				this.date.getDayOfMonth(), new OnDateChangedListenerImpl());
		this.setDateTime(); // 希望一开始可以设置一些文本的内容
	}

	private class OnTimeChangedListenerImpl implements OnTimeChangedListener {

		public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {
			MyDateTimeDemo.this.setDateTime();
		}
	}

	private class OnDateChangedListenerImpl implements OnDateChangedListener {
		public void onDateChanged(DatePicker view, int year, int monthOfYear,
				int dayOfMonth) {
			MyDateTimeDemo.this.setDateTime();
		}
	}

	public void setDateTime() { // 由于日期时间更改之后文本输入组件的内容也要修改
		this.input.setText(this.date.getYear() + "-"
				+ (this.date.getMonth() + 1) + "-" + this.date.getDayOfMonth()
				+ " " + this.time.getCurrentHour() + ":"
				+ this.time.getCurrentMinute()); // 修改文本的内容
	}
}