android Notification

android Notification 的使用:

Broadcast Receiver 组件并没有提供可视化的UI来显示信息, 我们可以使用 Notification 和NotificationManage 来实现可视化的信息通知, 通过使用Notification 可以实现显示广播信息的内容 图标 和振动 等信息.

使用Notification 比较简单,一般获得系统级的服务NotificationManage , 然后 实例化 Notification ,设置其属性 ,通过NotificationManage 发出通知就可以了. 

下面来看具体实现的 小例子 :

package com.app;

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

public class NotificationActivity extends Activity {
	 Button button1,button2 ;
	 NotificationManager nm;
	 Notification notification;
	 private final static int ID =1;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        button1  = (Button) findViewById(R.id.button1);
        button2  = (Button) findViewById(R.id.button2);
        String service = Context.NOTIFICATION_SERVICE;
        nm =(NotificationManager) getSystemService(service);
    	button1.setText("发出通知");
    	button2.setText("取消通知");
        button1.setOnClickListener(new View.OnClickListener() {
			
			public void onClick(View v) {
				noti(); 
			}
		});
        button2.setOnClickListener(new View.OnClickListener() {
        	
        	public void onClick(View v) {
        		nm.cancel(ID);
        	}
        });
    }
    
    private void noti() {
    	notification = new Notification();
    	notification.icon=R.drawable.ic_launcher;
    	notification.tickerText="收到新短信";
    	notification.when=System.currentTimeMillis();
    //	notification.defaults |= Notification.DEFAULT_LIGHTS;//闪光灯
    	notification.defaults |= Notification.DEFAULT_SOUND;//系统默认提示音
   // 	notification.defaults |= Notification.DEFAULT_VIBRATE;//震动
    	//震动
/*    	long[] vibrate = {0,100,200,300};
    	notification.vibrate = vibrate;*/
    	//闪光灯
    	/*notification.ledARGB = 0xff00ff00;
    	notification.ledOnMS = 300;
    	notification.ledOffMS = 1000;
    	notification.flags |= Notification.FLAG_SHOW_LIGHTS;*/
    	
    	PendingIntent contentIntent =   PendingIntent.getActivity(this, 
    			0, new Intent(), 0);
    	notification.setLatestEventInfo(this, "短信标题", "短信内容---", contentIntent);
    	nm.notify(ID,notification);
	}
}