进度通知

   private val handler = Handler()private var count = 0private lateinit var refreshNotify:ProgressNotify// 开始播放进度通知的刷新动画private fun startProgressNotify(title: String,message: String) {count = 0refreshNotify = ProgressNotify(title,message)handler.post(refreshNotify)}// 定义一个持续发送进度通知的任务内部类private inner class ProgressNotify(val title: String,val message: String) : Runnable{override fun run() {sendProgressNotify(title,message,count)count++if (count<=100){handler.postDelayed(refreshNotify,200)}}}// 发送单次进度通知private fun sendProgressNotify(title: String, message: String, progress: Int) {}

浮动通知

关键是调用 Notification.Builder 对象的 setFullScreenIntent，该方法定义了浮动窗的点击事件以及优先级。

private fun sendFloatNotify(title:String, message:String){// 声明一个点击通知消息时触发的动作意图val clickIntent = intentFor<ProgressBarActivity>()val piClick = PendingIntent.getActivity(this,R.string.app_name,clickIntent,PendingIntent.FLAG_UPDATE_CURRENT)// 构建通知val notification =   Notification.Builder(this,resources.getString(R.string.notify_id)).setContentIntent(piClick).setAutoCancel(true).setSmallIcon(R.drawable.default_icon).setTicker("简单消息").setWhen(System.currentTimeMillis()).setLargeIcon(BitmapFactory.decodeResource(resources,R.drawable.icon_default_header)).setContentTitle(title).setContentText(message).setFullScreenIntent(piClick,true).build()val manager = getSystemService(NOTIFICATION_SERVICE) as NotificationManager// 发送通知manager.notify(R.string.app_name,notification)}

锁屏通知

设置锁屏通知的关键是设置  Notification.Builder 对象的 setVisibility，该方法用于指定通知消息在锁屏状态下的显示方式。

// 显示通知的全部内容
Notification.VISIBILITY_PUBLIC
// 显示基本信息
Notification.VISIBILITY_PRIVATE,
// 不显示任何内容，包括图标
Notification.VISIBILITY_SECRET

，

private fun sendLockNotify(title:String, message:String,visible:Boolean){if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP){Toast.makeText(this, "锁屏通知需要5.0以上系统支持", Toast.LENGTH_SHORT).show()return}// 声明一个点击通知消息时触发的动作意图val clickIntent = intentFor<ProgressBarActivity>()val piClick = PendingIntent.getActivity(this,R.string.app_name,clickIntent,PendingIntent.FLAG_UPDATE_CURRENT)// 构建通知val notification =   Notification.Builder(this,resources.getString(R.string.notify_id)).setContentIntent(piClick).setAutoCancel(true).setSmallIcon(R.drawable.default_icon).setTicker("简单消息").setWhen(System.currentTimeMillis()).setLargeIcon(BitmapFactory.decodeResource(resources,R.drawable.icon_default_header)).setContentTitle(title).setContentText(message)// 设置锁屏通知的可见性    .setVisibility(if(visible) Notification.VISIBILITY_PUBLIC else Notification.VISIBILITY_PRIVATE).build()val manager = getSystemService(NOTIFICATION_SERVICE) as NotificationManager// 发送通知manager.notify(R.string.app_name,notification)}