Notifications

package activitys;

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

public class NotificationActivity extends Activity implements View.OnClickListener {

	private static final int NOTE_ID = 100;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		Button button = new Button(this);
		button.setText("Post New Notification");
		button.setOnClickListener(this);
		setContentView(button);
	}

	@Override
	public void onClick(View v) {
		handler.postDelayed(task, 10000);
		Toast.makeText(this, "Notification will post in 10 seconds",
				Toast.LENGTH_SHORT).show();
	}

	private Handler handler = new Handler();
	private Runnable task = new Runnable() {
		@Override
		public void run() {
			NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
			Intent launchIntent = new Intent(getApplicationContext(),
					Test.class);
			PendingIntent contentIntent = PendingIntent.getActivity(
					getApplicationContext(), 0, launchIntent, 0);

			Notification note = new Notification(R.drawable.icon,
					"Something Happened", System.currentTimeMillis());
			note.setLatestEventInfo(getApplicationContext(), "Finished!",
					"Click Here!", contentIntent);
			note.defaults |= Notification.DEFAULT_SOUND;
			note.flags |= Notification.FLAG_AUTO_CANCEL;

			manager.notify(NOTE_ID, note);
		}
	};
}

	notification.defaults|=Notification.DEFAULT_LIGHTS; 

	notification.ledARGB=0xff00ff00; 
	notification.ledOnMS=300; 
	notification.ledOffMS=1000; 
	notification.flags|=Notification.FLAG_SHOW_LIGHTS; 

flags： 
Notification.FLAG_INSISTENT;//让声音、振动无限循环，直到用户响应 
Notification.FLAG_AUTO_CANCEL;//通知被点击后，自动消失 
Notification.FLAG_NO_CLEAR;//点击‘Clear‘时，不清楚该通知(QQ的通知无法清除，就是用的这个 
//自定义下拉视图，比如下载软件时，显示的进度条。 
Notificationnotification=newNotification(); 
notification.icon=R.drawable.icon; 
notification.tickerText="Custom!"; 
RemoteViewscontentView=newRemoteViews(getPackageName(),R.layout.custom); 
contentView.setImageViewResource(R.id.image,R.drawable.icon); 
contentView.setTextViewText(R.id.text,"Hello,thismessageisinacustomexpandedview"); 
notification.contentView=contentView; 
//使用自定义下拉视图时，不需要再调用setLatestEventInfo()方法 
//但是必须定义contentIntent 
notification.contentIntent=pd; 
nm.notify(3,notification); 

使用自定义的Notification

要创建一个自定义的Notification，可以使用RemoteViews。要定义自己的扩展消息，首先要初始化一个RemoteViews对象，然后将它传递给Notification的contentView字段，再把PendingIntent传递给contentIntent字段。以下示例代码是完整步骤：

1、创建一个自定义的消息布局 view.xml

<?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>

//2、在程序代码中使用RemoteViews的方法来定义image和text。然后把RemoteViews对象传到contentView字段

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;

//3、为Notification的contentIntent字段定义一个Intent(注意，使用自定义View不需要setLatestEventInfo()方法)

Intent notificationIntent = new Intent(this,Main.class);

PendingIntent contentIntent = PendingIntent.getActivity(this,0,notificationIntent,0);

notification.contentIntent = contentIntent;

//4、发送通知

mNotificationManager.notify(2,notification);

//以下是全部示例代码

//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);