android使用notification消息通知（工具类封装）

代码直接复制粘贴就可以用了，参数可以更具自己需求添加

    private NotificationManager manager;
    private Notification notification;
    private static final String NORMAL_CHANNEL_ID = "my_notification_normal";
    private static final String IMPORTANT_CHANNEL_ID = "my_notification_important";


    /**
     * 实现包装方法（参数按自己需求来）
     * @param title 标题
     * @param content 内容
     * @param priorityType 通知级别：0为重要通知（有提示音），非0为普通通知（无提示音）
     */
    public void sendNotify (String title, String content, int priorityType) {

        manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

        NotificationChannel wsschannel; // channel（安卓8.0及以上才用到）
        String channel_id = IMPORTANT_CHANNEL_ID; // channelId用于绑定builder配置
        int priority = NotificationCompat.PRIORITY_LOW; // 通知级别

        // 判断是否8.0及以上版本，并选择发送消息的级别
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            if (priorityType == 0) {
                wsschannel = new NotificationChannel(IMPORTANT_CHANNEL_ID, "重要通知", NotificationManager.IMPORTANCE_HIGH);
                channel_id = IMPORTANT_CHANNEL_ID;
            } else {
                wsschannel = new NotificationChannel(NORMAL_CHANNEL_ID, "一般通知", NotificationManager.IMPORTANCE_LOW);
                channel_id = NORMAL_CHANNEL_ID;
            }
            manager.createNotificationChannel(wsschannel);
        }

        // 通知级别
        if (priorityType == 0) {
            priority = NotificationCompat.PRIORITY_HIGH;
        } else {
            priority = NotificationCompat.PRIORITY_LOW;
        }

        // 点击意图
        Intent intent = new Intent(this, MainActivity.class);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_IMMUTABLE);

        // 通知配置
        notification = new NotificationCompat.Builder(this, channel_id)
                .setContentTitle(title) // 标题
                .setContentText(content) // 内容
                .setSmallIcon(R.mipmap.user) // 小图标
                .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.setting))
                .setPriority(priority) // 7.0 设置优先级
                .setContentIntent(pendingIntent) // 跳转意图
                .setAutoCancel(true) // 点击后自动销毁
                .build();

        // 给每个通知随机id
        int id = (int) ((Math.random() * 9 + 1) * (6));

        // 生成通知
        manager.notify(id , notification);
    }

    

// 示例
sendNotify("服务关闭", "服务关闭成功", 0);