Notification基础Demo

主类：

package com.amaker.notification;

import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.provider.Contacts;
import android.view.View;
import android.widget.Button;
/**
 * 通知基础学习
 * 如何定义一个通知（通知的一些属性）
 * 如何取消通知
 * ZZL
 */
public class MainActivity extends Activity implements android.view.View.OnClickListener {
	private Button notification_btn;
	private Button cancel_btn;
	private NotificationManager nm;
	private Notification n;
	public static final int ID = 1;
	@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        notification_btn = (Button) findViewById(R.id.notification_button1);
        cancel_btn = (Button) findViewById(R.id.cancel_button2);
        notification_btn.setOnClickListener(this);
        cancel_btn.setOnClickListener(this);
    }
	//发 出一个通知
	void noti(){
		//实例化通知管理器
		nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
		//实例化一个通知
		n = new Notification();
		//通知上显示的那张小图标
		n.icon = R.drawable.icon;
		//通知的tickerText，显示一下就消失了
		n.tickerText = "tickerText......";
		//通知发出时间
		n.when = System.currentTimeMillis();
		PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(), 0);
		n.setLatestEventInfo(this, "contentTitle", "contentText", contentIntent);
		//通知封装好了后，通过通知管理器把通知发送出去
		nm.notify(ID, n);

	}
	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		//点击按钮，发出一个通知
		case R.id.notification_button1:
			noti();
			break;
		//点击按钮取消通知
		case R.id.cancel_button2:
			nm.cancel(ID);
			break;

		default:
			break;
		}
	}
}

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">
	<Button
		android:text="Notification"
		android:id="@+id/notification_button1"
		android:layout_width="wrap_content"
		android:layout_height="wrap_content" />
	<Button
		android:text="Cancel"
		android:id="@+id/cancel_button2"
		android:layout_width="wrap_content"
		android:layout_height="wrap_content" />
</LinearLayout>