Android状态栏提醒(Notification,NotificationManager)的使用

第一步:新建一个Android工程命名为NotificationDemo.

第二步:修改main.xml代码如下:

<?xml version="1.0" encoding="utf-8"?>  
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    android:orientation="vertical"  
    android:layout_width="fill_parent"  
    android:layout_height="fill_parent"  
    >  
<TextView    
    android:layout_width="fill_parent"   
    android:layout_height="wrap_content"   
    android:text="Welcome to Mr Wei's blog"  
    />  
<Button  
    android:id="@+id/showButton"  
    android:layout_width="fill_parent"   
    android:layout_height="wrap_content"  
    android:text="showNotification"  
/>  
<Button  
    android:id="@+id/cancelButton"  
    android:layout_width="fill_parent"   
    android:layout_height="wrap_content"  
    android:text="cancelNotification"  
/>  
</LinearLayout>  

第三步:修改NotificationDemo.java代码如下:

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package com.tutor.notification;  
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.view.View;  
import android.view.View.OnClickListener;  
import android.widget.Button;  
public class NotificationDemo extends Activity implements OnClickListener{  
      
    private Context mContext;  
    private Button showButton,cancelButton;  
    private Notification mNotification;  
    private NotificationManager mNotificationManager;  
    private final static int NOTIFICATION_ID = 0x0001;  
      
    @Override  
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.main);   
          
        setupViews();         
    }  
    //这里是初始化一些操作，可以看到onCreate()方法里代码非常简洁。  
    public void setupViews(){  
           mContext = NotificationDemo.this;  
           showButton = (Button)findViewById(R.id.showButton);  
           cancelButton = (Button)findViewById(R.id.cancelButton);  
             
           mNotification = new Notification(R.drawable.icon,"This is a notification.",System.currentTimeMillis());  
           //将使用默认的声音来提醒用户  
           mNotification.defaults = Notification.DEFAULT_SOUND;  
           mNotificationManager = (NotificationManager)this.getSystemService(NOTIFICATION_SERVICE);  
             
            
           showButton.setOnClickListener(this);  
           cancelButton.setOnClickListener(this);  
    }  
    //按钮点击事件响应  
    public void onClick(View v) {  
          
        if(v == showButton){  
            Intent mIntent = new Intent(mContext,NotificationDemo.class);  
            //这里需要设置Intent.FLAG_ACTIVITY_NEW_TASK属性  
            mIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);      
            PendingIntent mContentIntent =PendingIntent.getActivity(mContext,0, mIntent, 0);  
            //这里必需要用setLatestEventInfo(上下文,标题,内容,PendingIntent)不然会报错.  
            mNotification.setLatestEventInfo(mContext, "10086", "您的当前话费不足,请充值.哈哈~", mContentIntent);  
            //这里发送通知(消息ID,通知对象)  
            mNotificationManager.notify(NOTIFICATION_ID, mNotification);     
        }else if(v == cancelButton){  
            //取消只要把通知ID传过来就OK了.  
            mNotificationManager.cancel(NOTIFICATION_ID);  
        }  
    }  
}  

运行Android工程,效果如下图所示: