如何设置Android WifiConfiguration.preSharedKey以连接WPA2 PSK WiFi网络？

Question

如何设置Android WifiConfiguration.preSharedKey以连接WPA2 PSK WiFi网络？

19

在Android 1.5（也适用于1.6版本）中，

如何通过代码添加接入点？

假设已有支持WPA2的接入点，这是我的代码片段。

WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiConfiguration wc = new WifiConfiguration();
// This is must be quoted according to the documentation 
// http://developer.android.com/reference/android/net/wifi/WifiConfiguration.html#SSID
wc.SSID = "\"SSIDName\"";
wc.preSharedKey  = "password";
wc.hiddenSSID = true;
wc.status = WifiConfiguration.Status.ENABLED;        
wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
wc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
wc.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
int res = wifi.addNetwork(wc);
Log.d("WifiPreference", "add Network returned " + res );
boolean b = wifi.enableNetwork(res, true);        
Log.d("WifiPreference", "enableNetwork returned " + b );

此代码无法正常运行，因为LogCat中出现以下错误信息:

01-26 16:44:13.550: ERROR/wpa_supplicant(2032): Line 0: Invalid PSK 'password'.

我确定这是密码，并且其余所有参数都正确。我错过了什么？

- Boris Daich

3个回答

6

感谢您，我可以使用您的代码连接到我的WPA PSK WiFi。

   WifiConfiguration wc = new WifiConfiguration();
    // This is must be quoted according to the documentation 
    // http://developer.android.com/reference/android/net/wifi/WifiConfiguration.html#SSID
    wc.SSID = "\"zpoint\"";
    wc.preSharedKey  = "\"sipisP@ssw0rd!\"";
    wc.hiddenSSID = true;
    wc.status = WifiConfiguration.Status.ENABLED;        
    wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
    wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
    wc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
    wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
    wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
    wc.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
    int res = wifi.addNetwork(wc);
    Log.d("WifiPreference", "add Network returned " + res );
    boolean b = wifi.enableNetwork(res, true);        
    Log.d("WifiPreference", "enableNetwork returned " + b );

之前我输入了错误的密码，但后来我更正了密码，然后它就可以使用了。

- poe

3

为了达成以下目的，您需要添加下面的代码行：

wifi.saveConfiguration();

- sl96314

自 API 26 起，无需调用该方法；调用 addNetwork() 方法会自动更新配置。 - Oke Uwechue

网页内容由stack overflow 提供, 点击上面的

可以查看英文原文，
原文链接

- Boris Daich · Accepted Answer

我悲伤的原因在这里：这个文档问题

而这里的文档则声明：

"用于WPA-PSK的预共享密钥。当读取此密钥的值时，实际密钥不会返回，而只是一个“*”，如果密钥有值，则返回空字符串。"

这是正确的，但非常重要的是，它没有说期望此处为Linux命令的64字节哈希结果。

wpa_passphrase <ssid> [passphrase]

或者接入点的密码用双引号括起来！

所以，如果接入点的PSK是"example"，在Java中必须这样传递：

WifiConfiguration myWiFiConfig = new WifiConfiguration();
...
myWiFiConfig.preSharedKey = "\"example\"";
...

或者

myWiFiConfig.preSharedKey = "0a0b0f62170ecc5bcf721b6ff170b8b560101b5d56b00a26abec217e0bb4aa1f";

对于所有可能遇到这个问题的人，正确的方法是：

直接复制粘贴，不要改动任何内容，这样可以避免浪费时间（特别感谢Reflog）。

WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiConfiguration wc = new WifiConfiguration();
wc.SSID = "\"SSIDName\"";
wc.preSharedKey  = "\"password\"";
wc.hiddenSSID = true;
wc.status = WifiConfiguration.Status.ENABLED;        
wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
wc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
wc.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
int res = wifi.addNetwork(wc);
Log.d("WifiPreference", "add Network returned " + res );
boolean b = wifi.enableNetwork(res, true);        
Log.d("WifiPreference", "enableNetwork returned " + b );