android源码分析之notification

2023年4月28日 208次阅读 来源: Android源码分析

参考资料

(1) Android 通知栏Notification的整合 全面学习 （一个DEMO让你完全了解它）
http://blog.csdn.net/x_i_a_o_h_a_i/article/details/32966767

(2) Android NotificationManager 和Notification的使用总结
http://www.cnblogs.com/stay/articles/1898963.html

我们参考一引起网上的资料，就可以大概的知道notification的应用了。

关键代码

1.系统的notification使用样例：

NotificationManager nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

Notification.Builder notification = new Notification.Builder(this)
                .setContentTitle("Custom notification:"+i)
                .setContentText("This is a notification:"+i)
                .setSmallIcon(R.drawable.ic_launcher)
                .setOngoing(true)
                .setAutoCancel(false)
                .setSmallIcon(R.drawable.ic_launcher)
                .setWhen(0);

        //notification.setPriority(Notification.PRIORITY_MAX);

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

long[] vibrate = {0,100,200,300}; 
notification.setVibrate(vibrate); 

Notification n =notification.build();
n.defaults |=  Notification.DEFAULT_SOUND | Notification.DEFAULT_VIBRATE;

nm.notify(NOTIFY_ID, n);

2.自定义的notification使用样例：

 //Notification notification = new Notification(icon, tickerText, when);
Notification notification = new Notification();

notification.icon = R.drawable.ic_launcher;
notification.tickerText = "Notification:"+i;
notification.when = System.currentTimeMillis();

RemoteViews contentView = new RemoteViews(getPackageName(), R.layout.custom_notification); 
contentView.setImageViewResource(R.id.image, R.drawable.ic_launcher); 
contentView.setTextViewText(R.id.title, "Custom notification:"+i); 
contentView.setTextViewText(R.id.text, "This is a custom layout:"+i); 
notification.contentView = contentView; 

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

notification.defaults |= Notification.DEFAULT_SOUND; 
// notification.sound = Uri.parse("file:/ sdcard /notification/ringer.mp3"); 
//notification.sound = Uri.withAppendedPath(Audio.Media.INTERNAL_CONTENT_URI, "6");

notification.defaults |= Notification.DEFAULT_VIBRATE; 
long[] vibrate = {0,100,200,300}; 
notification.vibrate = vibrate ;

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

// notification.priority = Notification.PRIORITY_MAX;

NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); 
mNotificationManager.notify(NOTIFY_ID, notification);

3 关键源码类：

  1. Notification.java—notificatoin的描述和创建类
 (base\core\java\android\app)
  1. NotificationManager.java
    屏蔽所有的通知：
    我们可以设置一个标志位，对于在游戏模式下，可以屏蔽所有的notification，这是一个可以屏蔽notification干扰的好方法。
./frameworks/base/core/java/android/app/NotificationManager.java
public void notify(int id, Notification notification)
{
    String  isShowNotification = SystemProperties.get("tinno.notification.enable", "true"); 
    if(isShowNotification.equals("true")){
        notify(null, id, notification);
    }
}

3.NotificationManagerService.java
这是一个对notification管理的服务，里有对notification的进行管理的核心方法。

NotificationManagerService.java

 (base\services\core\java\com\android\server\notification)

AudioManager mAudioManager;—– 声音处理
Vibrator mVibrator;—– 振动处理

    原文作者：Android源码分析
    原文地址: https://blog.csdn.net/hfreeman2008/article/details/50621034
    本文转自网络文章，转载此文章仅为分享知识，如有侵权，请联系博主进行删除。
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