Android[初级教程]第十二章 Notification的应用

这一章节,我们来学习Notification的应用,很多人问Notification是什么东东啊?我打个比方吧,还是以西游记来说:唐僧被妖怪们抓住了,那悟空得知道是哪个妖怪抓住了他师傅,他得变成一些动物(苍蝇或蚊子)去通知他师傅啊,通知唐僧悟空来救他了,这里通知就是Notification,那唐僧知道了,他就放心了,安心等着悟空来救.呵呵,让我看一下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="match_parent"
    android:layout_height="match_parent">
    <Button android:text="通知师傅悟空来救他了" android:id="@+id/wukong"
        android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
    <Button android:text="通知师傅八戒来救他了" android:id="@+id/bajie"
        android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
    <Button android:text="通知师傅沙僧来救他了" android:id="@+id/shaseng"
        android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
    <Button android:text="取消通知" android:layout_width="wrap_content"
        android:layout_height="wrap_content" android:id="@+id/notify_cancal"/>
</LinearLayout>

这里面没有什么特别的,只是定义了四个按钮,然后主Activity.java

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

public class NotificationDemo extends Activity
{
    private final static int NOTIFYCATION_ID = 0x11;
    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        // TODO Auto-generated method stub www.zzzyk.com
        super.onCreate(savedInstanceState);

        setContentView(R.layout.notification);

        //查找main.xml中的Button控件
        Button wukong = (Button) findViewById(R.id.wukong);
        wukong.setOnClickListener(new ClickEvent());

        Button bajie = (Button) findViewById(R.id.bajie);
        bajie.setOnClickListener(new ClickEvent());

        Button shaseng = (Button) findViewById(R.id.shaseng);
        shaseng.setOnClickListener(new ClickEvent());

        Button notify_cancal = (Button)findViewById(R.id.notify_cancal);
        notify_cancal.setOnClickListener(new ClickEvent());
    }

    class ClickEvent implements View.OnClickListener
    {

        @Override
        public void onClick(View v)
        {
            //获取系统的NotificationManager服务
            NotificationManager notifyManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

            //创建一个启动其他Activity的Intent
            Intent intent = new Intent(NotificationDemo.this,
                    otherActivity.class);
            //设置点击通知时显示内容启动的类
            PendingIntent pi = PendingIntent.getActivity(NotificationDemo.this,
                    0, intent, 0);

            //创建Notification对象
            Notification notify = new Notification();

            //设置Notification的发送时间
            notify.when = System.currentTimeMillis();
            //为Notification设置默认的声音,默认的振动,默认的闪光灯,但这些需要在AndroidManifest.xml中加入相应的权限,不然会报错
            notify.defaults = Notification.DEFAULT_ALL;

            switch (v.getId())
            {
            case R.id.wukong:
                //设置Notification的图标
                notify.icon = R.drawable.wukong;
                //设置Notification事件信息
                notify.setLatestEventInfo(NotificationDemo.this, "悟空",
                        "悟空来救师傅的通知", pi);
                //设置Notification的文本内容,会显示在状态栏中
                notify.tickerText = "悟空来救师傅了";

补充：移动开发 , Android ,