记录android9 发送和获取通知

发送通知

int count=1;
private void testNotification(){
    NotificationManager notificationManager =
            (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE);

    String channelID="Channel";
    channelID += count;
    Notification notification = null;
    NotificationChannel channel = new NotificationChannel(
            channelID,"noteNotification",NotificationManager.IMPORTANCE_DEFAULT);
    notificationManager.createNotificationChannel(channel);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        NotificationCompat.Builder builder = new NotificationCompat.Builder(this,channelID);
        builder.setAutoCancel(true)
                .setCategory(Notification.CATEGORY_MESSAGE)
                .setContentText("3333333333333")
                .setContentTitle("333")
                .setDefaults(Notification.DEFAULT_SOUND)
                .setSmallIcon(R.mipmap.ic_launcher);
        Notification notification33 = builder.build();
        notificationManager.notify(count, notification33);
        count++;

    } else {//旧版本发送方式
    }

// 获取通知
    StatusBarNotification[] StatusBarNotification;
    int notifisize = (StatusBarNotification = notificationManager.getActiveNotifications()).length;
    Toast.makeText(this,"notification size:"+notifisize,Toast.LENGTH_SHORT).show();
}

//请求notification 权限
    if (!isEnabled()) {
        Intent intent = new Intent("android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS");
        startActivity(intent);
        //打开settings的一个通知权限界面
    } else {
        //Toast.makeText(this, "已开启服务权限", Toast.LENGTH_LONG).show();
    }
private boolean isEnabled() {
    String pkgName = getPackageName();
    final String flat = Settings.Secure.getString(getContentResolver(),
            ENABLED_NOTIFICATION_LISTENERS);
    //flat:com.datamax.note/com.datamax.note.NotificationListenerImp
    if (!TextUtils.isEmpty(flat)) {
        final String[] names = flat.split(":");
        for (int i = 0; i < names.length; i++) {
            final ComponentName cn = ComponentName.unflattenFromString(names[i]);
            if (cn != null) {
                if (TextUtils.equals(pkgName, cn.getPackageName())) {
                    return true;
                }
            }
        }
    }
    return false;
}