十一、notification笔记

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  1. 发出通知
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    val destUri = Uri.parse("cloudeye://warning/json={\"data\":{\"warningId\":\"df68dea17f74412da60490333f8f5ed7\",\"type\":\"eventWarning\"},\"code\":0,\"msg\":\"登录成功\"}")	 
    val notification = NotificationUtils.buildPushNotification(this, "Hello_world", Intent(Intent.ACTION_VIEW, destUri), true)
    NotificationManagerCompat.from(this).notify(NotificationId.getId(), notification)

注意 NotificationManagerCompat的 notify 方法第一个参数为int类型的id,每一个id对应通知栏的一条通知。所以如果这里写死id的话，你接收到的通知会覆盖掉上一条，导致通知栏只保留一条通知。
为了能显示多条通知，这里的id得不能重复(Generate int unique id as android notification id)。生成id代码如下

NotificationId.kt

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object NotificationId {
    private val c = AtomicInteger(0)
    fun getId(): Int {
        return c.incrementAndGet()
    }
}

  1. 发送一个简单的通知
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    public void sendSimpleNotification(Context context) {
        NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
        //设置内容
        builder.setContentTitle("简单的通知的标题")
                //设置内容
                .setContentText("这是通知内容")
                //大图标
                .setLargeIcon(BitmapFactory.decodeResource(
                        context.getResources(), R.mipmap.ic_launcher))
                //设置小图标背景色（默认不设置）
                .setColor(0xffff0000)
                //设置这个标志当用户单击面板就可以让通知将自动取消
                .setAutoCancel(true)
                //小图标
                .setSmallIcon(R.mipmap.ic_launcher);
        //通知管理器
        NotificationManagerCompat managerCompat = NotificationManagerCompat.from(context);
        //通知Id  一个id对应一个单独的通知栏
        int id = ID_SIMPLE;
        //发送通知
        managerCompat.notify(id, builder.build());
    }


  1. 有提醒的通知（声音/振动/闪光灯）
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    public void sendRemindNotification(Context context){
        NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
        builder
                .setContentTitle("下雨了")
                .setContentText("家里的衣服收了吗？")
                .setSmallIcon(R.mipmap.ic_launcher)
                //声音
                .setSound(Uri.parse("android.resource://" + context.getPackageName() + "/" + R.raw.remind))
                //振动 振500 停500 再振500
                .setVibrate(new long[]{0, 500, 500, 500})
                //灯光 亮200 灭100
                .setLights(Color.BLUE, 200, 100);
                //也可以全部设置 （灯光 声音 振动）
                //.setDefaults(NotificationCompat.DEFAULT_ALL)
        NotificationManagerCompat managerCompat = NotificationManagerCompat.from(context);
        managerCompat.notify(ID_REMIND, builder.build());
    }


  1. 有响应事件的通知
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    public void sendOnClickNotification(Context context) {
        NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
        builder
                .setContentTitle("新的邮件")
                .setContentText("尊敬的用户：为回馈老用户....")
                .setSmallIcon(R.mipmap.ic_launcher)
                //点击跳转的意图
                .setContentIntent(responseActivityIntent(context, "查看邮寄"));
        NotificationManagerCompat managerCompat = NotificationManagerCompat.from(context);
        managerCompat.notify(ID_ONCLICK, builder.build());
    }
    //响应开启一个服务的意图
    private PendingIntent responseServiceIntent(Context context, int action, String desc) {
        Intent intent = new Intent(context, ResponseService.class);
        intent.putExtra(ResponseService.EXTRA_ACTION, action);
        intent.putExtra(ResponseService.EXTRA_DESC, desc);
        //设置一个action防止PendingIntent被复用 导致数据错乱
        intent.setAction("Service_Intent_Action_" + action);
        return PendingIntent.getService(context, 1, intent, PendingIntent.FLAG_UPDATE_CURRENT);
    }


  1. 有按钮的通知
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    public void sendOnButtonNotification(Context context) {
        NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
        builder
                .setContentTitle("新的好友")
                .setContentText("隔壁老王添加你为好友？")
                .setSmallIcon(R.mipmap.ic_launcher)
                //添加操作 点击跳转的意图
                .addAction(R.mipmap.ic_launcher, "接受", responseServiceIntent(context, ResponseService.ACTION_ACCEPT, "点击了接收"))
                .addAction(R.mipmap.ic_launcher, "拒绝", responseServiceIntent(context, ResponseService.ACTION_CANCEL, "点击了拒绝"))
                //点击跳转的意图
                .setContentIntent(responseActivityIntent(context, "处理老王的好友请求"));
        NotificationManagerCompat managerCompat = NotificationManagerCompat.from(context);
        managerCompat.notify(ID_ONBUTTON, builder.build());
    }

    //响应开启一个活动的意图
    private PendingIntent responseActivityIntent(Context context, String desc) {
        Intent intent = new Intent(context, ResponseActivity.class);
        //设置一个action防止PendingIntent被复用 导致数据错乱
        intent.setAction("Activity_Intent_Action_" + desc);
        intent.putExtra(ResponseActivity.EXTRA_DESC, desc);
        //启动activity的不是activity 就需要加这个
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        return PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
    }


  1. 有进度条的通知
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    NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
    builder
            .setContentTitle("文件名")
            .setContentText("下载进度描述/进度等")
            .setSmallIcon(R.mipmap.ic_launcher)
            //indeterminate 模糊的进度显示
            .setProgress(100,50,true)
            //点击跳转的意图
            .setContentIntent(responseActivityIntent(context, "处理下载任务"));
    NotificationManagerCompat managerCompat = NotificationManagerCompat.from(context);
    managerCompat.notify(ID_ONBUTTON, builder.build());


  1. 清除通知
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    //1.设置自动管理通知
    NotificationCompat.Builder.setAutoCancel(true);
    //2.动态清除
    NotificationManagerCompat notifyMg = NotificationManagerCompat.from(context);
    //取消 TAG ID 相应的通知
    notifyMg.cancel(TAG_TEST,id);
    //3.右滑划掉 点击清除
    //4.保持通知不被移除
    NotificationCompat.Builder.setOngoing(true);


8.锁屏显示控制

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//1设置在锁屏页面显示
NotificationCompat.Builder.setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
//2设置锁屏上显示的时候 可以自定义在锁屏上的通知栏
NotificationCompat.Builder.setPublicVersion(null)

  1. 自定义通知栏
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    public void sendCustomNotification(Context context) {
        NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
        RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.layout_custom_notification);
        remoteViews.setTextViewText(R.id.tv_content, "自定义内容");
        remoteViews.setImageViewResource(R.id.iv_close, R.mipmap.ic_launcher);
        remoteViews.setOnClickPendingIntent(R.id.iv_close, responseActivityIntent(context, "close"));
        builder.setContent(remoteViews).setSmallIcon(R.mipmap.ic_launcher);
        NotificationManagerCompat managerCompat = NotificationManagerCompat.from(context);
        managerCompat.notify(TAG_TEST, ID_CUSTOM, builder.build());
    }