从零开始学android:Android事件处理—监听日期与时间的改变

日期选择器（DatePicker）和时间选择器（TimePicker）可以用于进行日期与时间的调整，当两者进行调整的时候也可以采用相关的监听器对其状态进行监听：

日期监听器接口：android.widget.DatePicker.OnDateChangedListener；

时间监听器接口：android.widget.TimePicker.OnTimeChangedListener；

范例：

布局文件：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <EditText 
        android:id="@+id/input"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <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>

程序文件：

package com.richard.ondatetimechangedlistener;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
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
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_my_date_time_demo);
		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);
		this.time.setOnTimeChangedListener(new OnTimeChangedListenerImpl());
		this.date.init(this.date.getYear(), this.date.getMonth(), this.date.getDayOfMonth(), new OnDateChangedListenerImpl());
		
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.my_date_time_demo, menu);
		return true;
	}
	
	public  void setDateTime(){
		this.input.setText(this.date.getYear() + "-"
				+ (this.date.getMonth() + 1) + "-" + this.date.getDayOfMonth()
				+ " " + this.time.getCurrentHour() + ":"
				+ this.time.getCurrentMinute());
		
	}
	
	private class OnDateChangedListenerImpl implements OnDateChangedListener{

		@Override
		public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
			MyDateTimeDemo.this.setDateTime();
		}
	}
	private class OnTimeChangedListenerImpl implements OnTimeChangedListener{

		@Override
		public void onTimeChanged(TimePicker arg0, int arg1, int arg2) {
			MyDateTimeDemo.this.setDateTime();
		}	
	}
}

展示效果：