华为Harmony鸿蒙开发笔记八：通知

华为Harmony鸿蒙开发笔记八：通知"/>

华为Harmony鸿蒙开发笔记八：通知

通知还是比价简单的，很容易就实现。

首先，实现一个NotificationSlot，用来设置通知的方式和等级

    private NotificationSlot slot;private void initNotificationSlot() {slot = new NotificationSlot("slot_001","slot_default", NotificationSlot.LEVEL_MIN); // 创建notificationSlot对象slot.setDescription("NotificationSlotDescription");slot.setEnableVibration(true); // 设置振动提醒slot.setLockscreenVisibleness(NotificationRequest.VISIBLENESS_TYPE_PUBLIC);//设置锁屏模式slot.setEnableLight(true); // 设置开启呼吸灯提醒slot.setLedLightColor(Color.RED.getValue());// 设置呼吸灯的提醒颜色try {NotificationHelper.addNotificationSlot(slot);} catch (RemoteException ex) {HiLog.warn(LABEL, "addNotificationSlot occur exception.");}}

然后就可以定义一个通知，并发布：

    private int notificationId=1;private void publishNotification() {NotificationRequest request = new NotificationRequest(notificationId);request.setSlotId(slot.getId());String title = "机密信息";String text = "有内鬼，停止交易";NotificationRequest.NotificationNormalContent content = new NotificationRequest.NotificationNormalContent();content.setTitle(title).setText(text);NotificationRequest.NotificationContent notificationContent = new NotificationRequest.NotificationContent(content);request.setGroupValue("群组信息");request.setProgressBar(20,100,true);request.setContent(notificationContent); // 设置通知的内容try {NotificationHelper.publishNotification(request);} catch (RemoteException ex) {HiLog.warn(LABEL, "publishNotification occur exception.");}}

还可以取消这个通知：

    private void cancelNotification() {try {NotificationHelper.cancelNotification(notificationId);} catch (RemoteException ex) {HiLog.warn(LABEL, "cancelNotification occur exception.");}}

鸿蒙的通知有很多样式，可以设置图标，时间，倒计时，图片，按钮，具体参考官方文档。