定义通知栏消息

需求：

定义一个通知栏消息，点击可以跳转到二级界面。

MainActivity：

package org.mobiletrain.notification_demo;

import android.os.Bundle;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {

	private Button sendButton,cancelButton;
	NotificationManager nm;
	final int NOTIFICATION_ID = 0X100;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		sendButton = (Button)findViewById(R.id.sendBn);
		cancelButton = (Button)findViewById(R.id.cancelBn);
		nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
		sendButton.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				send();
			}
		});
		cancelButton.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				cancel();
			}
		});
	}
	//发送通知信息
	@SuppressLint("NewApi")
	private void send(){
		//写出即将跳转组件的“意图”
		Intent intent = new Intent(MainActivity.this,SecondActivity.class);
		//封装一个Pending对象，用来封装将要发生的事。
		PendingIntent pIntent = PendingIntent.getActivity
				(MainActivity.this, 0, intent, 0);
		
		Notification.Builder builder = new Notification.Builder(MainActivity.this);
		builder.setAutoCancel(true);    //设置通知栏点击后就消失。
		builder.setTicker("您有新消息啦！");  //设置提示信息
		builder.setSmallIcon(android.R.drawable.ic_menu_add);  //设置通知的图标
		builder.setContentTitle("有一条新消息"); //设置通知的标题
		builder.setContentText("您中了500万，点击查看详情");//设置通知的内容
		builder.setDefaults(Notification.DEFAULT_ALL); //设置声音，振动，led灯等操作
		builder.setWhen(System.currentTimeMillis());   //设置发送时间
		builder.setContentIntent(pIntent);			  //设置将要发生的跳转组件的意图
		Notification notification = builder.getNotification();//获取通知对象
		nm.notify(NOTIFICATION_ID, notification);   //发送通知
		
//		
		
	}
	
	private void cancel(){
		nm.cancel(NOTIFICATION_ID);                  //取消通知
		
	}

}

activity_main.xml文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <Button
        android:id="@+id/sendBn"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="50dp"
        android:text="发送通知" />

    <Button
        android:id="@+id/cancelBn"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/sendBn"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="30dp"
        android:text="取消通知" />

</RelativeLayout>

第二级界面的xml文件：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="20dp"
    android:background="#f00" >

    <TextView
        android:id="@+id/tv_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="中大奖了！！！"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="恭喜您被《非常6+1》选为幸运观众，中了500万大奖！！！！" />

</LinearLayout>