试试这个code：

 私人无效generateNotification（上下文的背景下，字符串消息，
        长时，查询字符串）{

    INT图标= R.drawable.icon;
         时长= System.currentTimeMillis的（）;
    。字符串APPNAME = context.getResources（）的getString（R.string.app_name）;
    NotificationManager notificationManager =（NotificationManager）上下文
            .getSystemService（Context.NOTIFICATION_SERVICE）;
    INT currentapiVersion = android.os.Build.VERSION.SDK_INT;
    通知通知;

    意向意图=新的意图（背景下，MainActivity.class）;
    PendingIntent contentIntent = PendingIntent.getActivity（上下文，0，
            意图，0）;

        如果（currentapiVersion＆LT; android.os.Build.VERSION_ codeS.HONEYCOMB）{
            通知=新的通知（图标，邮件，时）;
            notification.setLatestEventInfo（背景下，应用程序的名字，消息，
                    contentIntent）;
            notification.flags = Notification.FLAG_AUTO_CANCEL;
            notificationManager.notify（（INT）时，通知）;

        } 其他 {
            NotificationCompat.Builder建设者=新NotificationCompat.Builder（
                    上下文）;
            通知= builder.setContentIntent（co​​ntentIntent）
                    .setSmallIcon（图标）.setTicker（应用程序名称）.setWhen（时）
                    .setAutoCancel（真）.setContentTitle（应用程序名称）
                    .setContentText（消息）.build（）;

            notificationManager.notify（（INT）时，通知）;

        }

}
 

您可以致电 generateNotification（）的方法 onAccessibilityEvent（）和通知会显示出来。

How to get the notifications in android using Accessibility Service above 4.0?

Why onAccessibilityEvent(AccessibilityEvent event) not calling When Notification fired above 4.0 Please give Proper Suggestion

Thanks in advance

@Override
    public void onAccessibilityEvent(AccessibilityEvent event) {

        final int eventType = event.getEventType();
        System.out.println("MyServ.onAccessibilityEvent()");
        switch (eventType) {
        case AccessibilityEvent.TYPE_VIEW_FOCUSED:
            Toast.makeText(getApplicationContext(), "Notification fired",
                    Toast.LENGTH_LONG).show();
            break;
        case AccessibilityEvent.TYPE_ANNOUNCEMENT:
            Toast.makeText(getApplicationContext(), "Type is Announcement",
                    Toast.LENGTH_LONG).show();
            break;
        default:
            break;
        }

    }

In onServiceConnected()

@Override
    protected void onServiceConnected() {
        super.onServiceConnected();
    AccessibilityServiceInfo info = new AccessibilityServiceInfo();
        info.eventTypes = AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED;
        info.feedbackType = AccessibilityServiceInfo.FEEDBACK_SPOKEN;
        setServiceInfo(info);
}

Try this code :

    private void generateNotification(Context context, String message,
        long when, String query) {

    int icon = R.drawable.icon;
         long when = System.currentTimeMillis();
    String appname = context.getResources().getString(R.string.app_name);
    NotificationManager notificationManager = (NotificationManager) context
            .getSystemService(Context.NOTIFICATION_SERVICE);
    int currentapiVersion = android.os.Build.VERSION.SDK_INT;
    Notification notification;

    Intent intent = new Intent(context, MainActivity.class);
    PendingIntent contentIntent = PendingIntent.getActivity(context, 0,
            intent, 0);

        if (currentapiVersion < android.os.Build.VERSION_CODES.HONEYCOMB) {
            notification = new Notification(icon, message, when);
            notification.setLatestEventInfo(context, appname, message,
                    contentIntent);
            notification.flags = Notification.FLAG_AUTO_CANCEL;
            notificationManager.notify((int) when, notification);

        } else {
            NotificationCompat.Builder builder = new NotificationCompat.Builder(
                    context);
            notification = builder.setContentIntent(contentIntent)
                    .setSmallIcon(icon).setTicker(appname).setWhen(when)
                    .setAutoCancel(true).setContentTitle(appname)
                    .setContentText(message).build();

            notificationManager.notify((int) when, notification);

        }

}

You can call generateNotification() method in onAccessibilityEvent() and notifications will be displayed.