java 网络状态改变时的广播意图
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Broadcast Intent when network state has changend
提问by user283494
Does Android broadcast an intent when the network state has changend, i.e. from GSM to Wifi? And if so what permission do I need and what is the intent action called?
当网络状态发生变化时，即从 GSM 到 Wifi，Android 是否会广播意图？如果是这样，我需要什么许可以及所谓的意图操作是什么？
回答by velazcod
Update:please use this instead: https://stackoverflow.com/a/2677519/241869
更新：请改用这个：https: //stackoverflow.com/a/2677519/241869
回答by Al.
There isn't anything exactly like what you are describing but you can use ConnectivityManager.CONNECTIVITY_ACTIONto monitor changes and use the extras that come with it to see if the connection has changed from GSM to Wifi and vice versa. For this you need the permission android.permission.ACCESS_NETWORK_STATEand android.permission.ACCESS_WIFI_STATEfor checking wifi information.
没有任何与您所描述的完全相同的东西，但您可以使用它ConnectivityManager.CONNECTIVITY_ACTION来监视更改并使用随附的附加功能来查看连接是否已从 GSM 更改为 Wifi，反之亦然。为此，您需要获得许可android.permission.ACCESS_NETWORK_STATE并android.permission.ACCESS_WIFI_STATE检查 wifi 信息。
回答by Erich Douglass
Android will broadcast WifiManager.NETWORK_STATE_CHANGED_ACTIONwhen the devices
gains or looses wifi connectivity. You'll need the permission android.permission.ACCESS_WIFI_STATEto receive the intent. However, I'm not sure if
there's something similar for GSM -> WIFI.
WifiManager.NETWORK_STATE_CHANGED_ACTION当设备获得或失去 wifi 连接时，Android 将进行广播。您需要获得许可android.permission.ACCESS_WIFI_STATE才能接收意图。但是，我不确定 GSM -> WIFI 是否有类似的东西。
