使用iOS4时，无线连接在睡着时无法保持活动状态 [英] Wifi connection doesn't stay alive when asleep, with iOS4

问题描述

知道iOS4支持wifi在睡着时保持活着真的很开心。但是我得到了一些不同的体验：
我有2台iPod，iPod第二代和iPod第三代。两者都更新到iOS 4测试版。 iPod 2g可以在睡眠中保持wifi状态，而iPod 3g在睡眠时总是会断开wifi。我在他们处于睡眠模式时对他们两个进行ping操作，只有iPod 2g保持回复回音。

Knowing that iOS4 support wifi stay alive in asleep is really happy thing. However I got some different experience: I've got 2 iPods, iPod 2nd gen & iPod 3rd gen. Both updated to iOS 4 beta. iPod 2g can stay wifi on in sleep while iPod 3g always disconnect wifi in sleep. I ping both of them while they're in sleep mode, only iPod 2g keeps reply echo.

可能经常提示我表明我做错了吗？

Could any often a hint to show the point I'm doing wrong?

推荐答案

在你的plist上添加这个测试：

Test with adding this on your plist :

UIRequiresPersistentWiFi = YES

有了这个，wifi在所有生命中都是活着的你的应用。

With this the wifi is alive during all the life of your app.

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