有没有办法得到通知时，称为SSIS WiFi网络获取输入/输出的范围是多少？ [英] Is there any way to get notified when known SSIS wifi networks get in/out of range?

问题描述

我想写其中包括执行的操作，当一个已知的WiFi网络得到或超出范围的应用程序。

I want to write an application which consists on perform actions when a known wifi networks get in or out of range.

例如，假设我的家庭WiFi网络的SSIS是WifiHome，我想打一个通知：你刚离开家！每当设备无法检测到这种特定网络了。  （或者alternativly - 你刚刚进入家庭时，该设备从该网络重新检测信号）

For example, let's say my home wifi network's SSIS is "WifiHome", and i want to make a notification "You just left home!" whenever the device can't detect this specific network anymore. (Or alternativly - "You just entered home" when the device re-detect signals from this network).

我的问题是： 是可以听那些变化没有投票的可用网络列表频繁？

My question is: Is is possible to listen to those changes without polling the available-network-list frequently?

推荐答案

您应该听听广播事件<一href="http://developer.android.com/reference/android/net/wifi/WifiManager.html#SCAN_RESULTS_AVAILABLE_ACTION"相对=nofollow> SCAN_RESULTS_AVAILABLE_ACTION 。这将是无线网络连接，扫描完成后，每次发送。当这样的事件发生时只需重新迭代，可以通过WifiManager的 getScanResults 。

You should listen to broadcast event SCAN_RESULTS_AVAILABLE_ACTION. This will be sent each time Wi-Fi scan is finished. When such event occurs just re-iterate the scan results that can be obtained via WifiManager's getScanResults.

当无线网络处于活动状态，您将收到该广播每隔几秒钟。但是，有没有办法来配置这个区间，我的猜测是，每一个制造商可能会改变这一区间。

When wi-fi is active, you'll receive this broadcast every several seconds. But there is no way to configure this interval and my guess is that each manufacturer may change this interval.

您可以使用WifiManager的的 startScan 。

You can manually trigger wi-fi scan using WifiManager's startScan.

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