android通知栏的实现方法分析

//创建一个NotificationManager的引用
String ns = Context.NOTIFICATION_SERVICE;
NotificationManager mNotificationManager = (NotificationManager)getSystemService(ns);
// 定义Notification的各种属性
int icon = R.drawable.icon; //通知图标
CharSequence tickerText = "Hello"; //状态栏显示的通知文本提示
long when = System.currentTimeMillis(); //通知产生的时间，会在通知信息里显示
//用上面的属性初始化 Nofification
Notification notification = new Notification(icon,tickerText,when);
/*
* 添加声音
* notification.defaults |=Notification.DEFAULT_SOUND;
* 或者使用以下几种方式
* notification.sound = Uri.parse("file:///sdcard/notification/ringer.mp3");
* notification.sound = Uri.withAppendedPath(Audio.Media.INTERNAL_CONTENT_URI, "6");
* 如果想要让声音持续重复直到用户对通知做出反应，则可以在notification的flags字段增加"FLAG_INSISTENT"
* 如果notification的defaults字段包括了"DEFAULT_SOUND"属性，则这个属性将覆盖sound字段中定义的声音
*/
/*
* 添加振动
* notification.defaults |= Notification.DEFAULT_VIBRATE;
* 或者可以定义自己的振动模式：
* long[] vibrate = {0,100,200,300}; //0毫秒后开始振动，振动100毫秒后停止，再过200毫秒后再次振动300毫秒
* notification.vibrate = vibrate;
* long数组可以定义成想要的任何长度
* 如果notification的defaults字段包括了"DEFAULT_VIBRATE",则这个属性将覆盖vibrate字段中定义的振动
*/
/*
* 添加LED灯提醒
* notification.defaults |= Notification.DEFAULT_LIGHTS;
* 或者可以自己的LED提醒模式:
* notification.ledARGB = 0xff00ff00;
* notification.ledOnMS = 300; //亮的时间
* notification.ledOffMS = 1000; //灭的时间
* notification.flags |= Notification.FLAG_SHOW_LIGHTS;
*/
/*
* 更多的特征属性
* notification.flags |= FLAG_AUTO_CANCEL; //在通知栏上点击此通知后自动清除此通知
* notification.flags |= FLAG_INSISTENT; //重复发出声音，直到用户响应此通知
* notification.flags |= FLAG_ONGOING_EVENT; //将此通知放到通知栏的"Ongoing"即"正在运行"组中
* notification.flags |= FLAG_NO_CLEAR; //表明在点击了通知栏中的"清除通知"后，此通知不清除，
* //经常与FLAG_ONGOING_EVENT一起使用
* notification.number = 1; //number字段表示此通知代表的当前事件数量，它将覆盖在状态栏图标的顶部
* //如果要使用此字段，必须从1开始
* notification.iconLevel = ; //
*/
//设置通知的事件消息
Context context = getApplicationContext(); //上下文
CharSequence contentTitle = "My Notification"; //通知栏标题
CharSequence contentText = "Hello World!"; //通知栏内容
Intent notificationIntent = new Intent(this,Main.class); //点击该通知后要跳转的Activity
PendingIntent contentIntent = PendingIntent.getActivity(this,0,notificationIntent,0);
notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
//把Notification传递给 NotificationManager
mNotificationManager.notify(0,notification);

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent">
<ImageView android:id="@+id/image" android:layout_width="wrap_content"
android:layout_height="fill_parent" android:layout_marginRight="10dp" />
<TextView android:id="@+id/text" android:layout_width="wrap_content"
android:layout_height="fill_parent" android:textColor="#000" />
</LinearLayout>

RemoteViews contentView = new RemoteViews(getPackageName(),R.layout.view);
contentView.setImageViewResource(R.id.image,R.drawable.icon);
contentView.setTextViewText(R.id.text,”Hello,this message is in a custom expanded view”);
notification.contentView = contentView;

Intent notificationIntent = new Intent(this,Main.class);
PendingIntent contentIntent = PendingIntent.getActivity(this,0,notificationIntent,0);
notification.contentIntent = contentIntent;

mNotificationManager.notify(2,notification);

//创建一个 NotificationManager的引用
String ns = Context.NOTIFICATION_SERVICE;
NotificationManager mNotificationManager = (NotificationManager)getSystemService(ns);
// 定义Notification的各种属性
int icon = R.drawable.icon; //通知图标
CharSequence tickerText = "Hello"; //状态栏显示的通知文本提示
long when = System.currentTimeMillis(); //通知产生的时间，会在通知信息里显示
//用上面的属性初始化 Nofification
Notification notification = new Notification(icon,tickerText,when);
RemoteViews contentView = new RemoteViews(getPackageName(),R.layout.view);
contentView.setImageViewResource(R.id.image, R.drawable.iconempty);
contentView.setTextViewText(R.id.text, "Hello,this is JC");
notification.contentView = contentView;
Intent notificationIntent = new Intent(this,Main.class);
PendingIntent contentIntent = PendingIntent.getActivity(this,0,notificationIntent,0);
notification.contentIntent = contentIntent;
//把Notification传递给NotificationManager
mNotificationManager.notify(0,notification);