要在AMOLED屏幕上实现通知LED仿真,可以使用Android的NotificationManager类和NotificationCompat类来创建和显示通知。以下是一个基本的代码示例:
// 创建通知渠道(仅适用于Android 8.0及更高版本)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel channel = new NotificationChannel("channel_id", "channel_name", NotificationManager.IMPORTANCE_HIGH);
NotificationManager notificationManager = getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(channel);
}
// 创建通知构建器
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, "channel_id")
.setSmallIcon(R.drawable.notification_icon)
.setContentTitle("通知标题")
.setContentText("通知内容")
.setPriority(NotificationCompat.PRIORITY_HIGH)
.setLights(Color.RED, 1000, 1000) // 设置LED灯的颜色和闪烁时间
.setDefaults(NotificationCompat.DEFAULT_ALL) // 设置默认的通知声音、振动和闪光效果
// 显示通知
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
notificationManager.notify(notificationId, builder.build());
// 需要在AndroidManifest.xml文件中声明SYSTEM_ALERT_WINDOW权限
// 关闭屏幕
PowerManager powerManager = (PowerManager) getSystemService(Context.POWER_SERVICE);
if (powerManager != null && !powerManager.isInteractive()) {
PowerManager.WakeLock wakeLock = powerManager.newWakeLock(PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK, "tag");
wakeLock.acquire(3000); // 屏幕关闭时间(毫秒)
}
这样,当收到通知时,屏幕会短暂点亮并显示通知LED效果,然后立即关闭屏幕以实现黑色仿真效果。