android notification和notificationmanager使用

notification和notificationmanager的使用

        1、获取系统级的服务notificationmanager

        //String android.content.Context.NOTIFICATION_SERVICE

        String service = NOTIFICATION_SERVICE;
        NotificationManager nm = (NotificationManager)getSystemService(service);
        
        2、实例化Notification
        Notification n = new Notification();
        // 设置显示图标，该图标会在状态栏显示
        int icon = n.icon = R.drawable.icon;
        // 设置显示提示信息，该信息也会在状态栏显示
        String tickerText = "Test Notification";
        // 显示时间
        long when = System.currentTimeMillis();
        n.icon = icon;
        n.tickerText = tickerText;
        n.when = when;

        // 也可以通过这种构造方法来设置
        Notification n1 = new Notification(icon, tickerText, when); 
        
        3、实例化Intent
        Intent intent = new Intent(this, MainActivity_Temp.class);
        // 获得PendingIntent
        PendingIntent pi = PendingIntent.getActivity(this, 0, intent, 0);
        // 设置事件信息
        n.setLatestEventInfo(this, "My Title", "My Content", pi); 

 

        //具体事件 暂时不知道干什么的
        n.defaults |= Notification.DEFAULT_SOUND;
        n.sound = Uri.parse("file:///sdcard/sound.mp3");
        n.sound = Uri.withAppendedPath(Audio.Media.INTERNAL_CONTENT_URI, "6");

        n.defaults |= Notification.DEFAULT_VIBRATE;
        long[] vibrate = {0,50,100,150};
        n.vibrate = vibrate; 
        n.defaults |= Notification.DEFAULT_LIGHTS;
        n.ledARGB = 0xff00ff00;
        n.ledOnMS = 300;
        n.ledOffMS = 1000;
        n.flags |= Notification.FLAG_SHOW_LIGHTS; 
        

         4、发通知
        // 标示该通知的ID
        int ID = 1;
        // 发出通知
        nm.notify(ID, n);

 

利用notification和notificationmanager来实现可视化的消息显示。

 

package com.amaker.ch08.app;

import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore.Audio;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class TestNotificationmanager extends Activity {
 // 声明按钮
 private Button sendBtn,cancelBtn;
 private Notification n ;
 private NotificationManager nm; 
 // Notification标示ID
 private static final int ID = 1;
 
 @Override
 public void onCreate(Bundle savedInstanceState) {
 //
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  
   // 实例化按钮       
  sendBtn = (Button)findViewById(R.id.sendButton01);       
  cancelBtn = (Button)findViewById(R.id.cancelButton02);
  
  // 获得NotificationManager实例       
  String service = NOTIFICATION_SERVICE;       
  nm = (NotificationManager)getSystemService(service); 
  
  // 实例化Notification       
  n = new Notification();  
  
  // 设置显示图标，该图标会在状态栏显示       
  int icon = n.icon = R.drawable.happy; 
  
  // 设置显示提示信息，该信息也会在状态栏显示      
  String tickerText = "Test Notification";        
  // 显示时间       
  long when = System.currentTimeMillis();       
  n.icon = icon;       
  n.tickerText = tickerText;       
  n.when = when;   
  
  // 为按钮添加监听器       
  sendBtn.setOnClickListener(sendListener);       
  cancelBtn.setOnClickListener(cancelListener);
  
 }
 
 private OnClickListener sendListener = new OnClickListener(){
   @Override       
   public void onClick(View v){
    // 实例化Intent           
    Intent intent = new Intent(TestNotificationmanager.this, TestNotificationmanager.class);            
    // 获得PendingIntent           
    PendingIntent pi = PendingIntent.getActivity(TestNotificationmanager.this, 0, intent, 0);            
    // 设置事件信息           
    n.setLatestEventInfo(TestNotificationmanager.this, "My Title", "My Content", pi);
   
//    n.defaults |= Notification.DEFAULT_SOUND;
//       n.sound = Uri.parse("file:///sdcard/love.mp3");
//          n.sound = Uri.withAppendedPath(Audio.Media.INTERNAL_CONTENT_URI, "6");
//
//          n.defaults |= Notification.DEFAULT_VIBRATE;
//          long[] vibrate = {0,50,100,150};
//          n.vibrate = vibrate;
//          n.defaults |= Notification.DEFAULT_LIGHTS;
//          n.ledARGB = 0xff00ff00;
//          n.ledOnMS = 300;
//          n.ledOffMS = 1000;
//          n.flags |= Notification.FLAG_SHOW_LIGHTS;

    // 发出通知           
    nm.notify(ID, n);
   }
 };
 
 private OnClickListener cancelListener  = new OnClickListener(){
   @Override       
   public void onClick(View v){
    /// 取消通知           
    nm.cancel(ID);
   }
 };
}

 

在main.xml布两个按钮，在res下建一个drawable文件夹放上happy.jpg见附件

 

效果：
出现图标和字符通知