关于连接WIFI的问题

[hatum]

请教几个连接wifi的问题：
1、扫描热点的时候，如何获得热点的协议、加密方式等信息？
2、WifiConfiguration.AuthAlgorithm，WifiConfiguration.GroupCipher ，WifiConfiguration.PairwiseCipher，WifiConfiguration.Protocol 分别是什么，我看了文档还是有点不太明白， 他们之间的关系是什么？
3、如何连接到一个加密的AP
4、如何获取连接失败的原因？ addNetwork总是返回-1，enableNetwork总是返回false，如何知道具体是哪里出问题了。


实在不解，多多指教，非常感谢！

[hatum]

有人会吗？

[hatum]

没人回答吗？

[hatum]

一天了，， 真的没人会？

[qminglin]

问题1

        private WifiManager mWifiMager;
	public void StartScan()
	{
		mWifiManager.startScan();
		//得到扫描结果
		mWifiList = mWifiManager.getScanResults();
		//得到配置好的网络连接
		mWifiConfiguration = mWifiManager.getConfiguredNetworks();
	}
	//得到网络列表
	public List<ScanResult> GetWifiList()
	{
		return mWifiList;
	}
	//查看扫描结果
	public StringBuilder LookUpScan()
	{
		StringBuilder stringBuilder = new StringBuilder();
		for (int i = 0; i < mWifiList.size(); i++)
		{
			stringBuilder.append("Index_"+new Integer(i + 1).toString() + ":");
			//将ScanResult信息转换成一个字符串包
			//其中把包括：BSSID、SSID、capabilities、frequency、level
			stringBuilder.append((mWifiList.get(i)).toString());
			stringBuilder.append("\n");
		}
		return stringBuilder;
	}

问题2:这个问题你要看wifi的协议了。

[majaw]

addNetwork总是返回-1说明添加失败
如何连接一个ＡＰ，
对一个有networkID的WifiConfiguration只需要调用WifiManager的enableNetwork(networkId,true)，没有配置过的ＡＰ，需要addNetwork，返回ｎｅｔｗｏｒｋＩｄ,再调用enableNetwork(networkId,true)
详细过程可以参考源码的wifiSetting

[hatum]

连接DHCP的wifi热点已经没问题了，但不知道如何设置静态IP呢？

[majaw]

wifiStateTracker.java

[hatum]

能列举一下不同的协议和加密方式需要配置哪些参数吗？

[majaw]

是的，都在那里面

[hatum]

在wifiStateTracker.java这个类里，貌似是通过dhcpinfo这个类来设置ip的， 难道静态ip也是通过dhcpinfo来设置的吗？

[阿汤哥已被占用]

我最近也在研究這一塊，準備做好了寫篇blog

[floweriswho]

这是我写的 代码 应该 能解决你的 前三个问题吧
第四个问题我也不知道。。。我这是总返回true 不论 ssid和密码对不对 就是 true我都疯了

<pre class="java" name="code">
/*
* wifi设置
*/

/*
* 打开wifi
*/
public int openWifi() {
try {
mWifiManager.setWifiEnabled(true);
return SUCCESS;
} catch (Exception e) {
return FAIL;
}

}

/*
* 打开wifi 连接指定的 wifi
*/
public int openWifi(String wifiName, String pwd) {
try {
WifiConfiguration wc = new WifiConfiguration();
wc.SSID = "\""+wifiName+"\""; //账户 格式为 "ssid"
wc.preSharedKey = "\""+pwd+"\""; //该热点的密码 格式为 "pwd"
wc.hiddenSSID = true;
wc.status = WifiConfiguration.Status.ENABLED;
wc.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
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.WPA);

mWifiManager.setWifiEnabled(true);
wc.networkId = mWifiManager.addNetwork(wc);
mWifiManager.enableNetwork(wc.networkId, true);

return SUCCESS;
} catch (Exception e) {
return FAIL;
}
}

/*
* 关闭wifi
*/
public int closeWifi() {
try {
mWifiManager.setWifiEnabled(false);
return SUCCESS;
} catch (Exception e) {
return FAIL;
}
}

/*
* 获得wifi列表
*/
public String[] scanWifi() {
String[] res;
try {
mWifiManager.startScan();
mWifiList = mWifiManager.getScanResults();
mWifiConfiguration = mWifiManager.getConfiguredNetworks();
res = new String[mWifiList.size() + 1];
res[0] = SUCCESS + "";
int i = 1;
for (ScanResult sr : mWifiList) {
res[i] = sr.toString();
Log.e(L, "ScanResult:" + sr.toString());
i++;
}
return res;
} catch (Exception e) {
res = new String[2];
res[0] = FAIL + "";
res[1] = e.toString();
return res;
}
}

/*
* 连接wifi
*/
public int connectWifi(String wifiName, String pwd) {
try {
WifiConfiguration wc = new WifiConfiguration();
wc.SSID = "\""+wifiName+"\""; //账户 格式为 "ssid"
wc.preSharedKey = "\""+pwd+"\""; //该热点的密码 格式为 "pwd"
wc.hiddenSSID = true;
wc.status = WifiConfiguration.Status.ENABLED;
wc.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
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.WPA);
wc.networkId = mWifiManager.addNetwork(wc);
boolean bbb=mWifiManager.enableNetwork(wc.networkId, true);
Log.e(L, bbb+"");
return SUCCESS;
} catch (Exception e) {
return FAIL;
}
}

/*
* 获得当前wifi状态
*/
public String[] getWifiState() {
String[] res = new String[2];
try {
mWifiInfo = mWifiManager.getConnectionInfo();
Log.e(L, "mWifiInfo:" + mWifiInfo.toString());
res[0] = SUCCESS + "";
res[1] = mWifiInfo.toString();
return res;
} catch (Exception e) {
res[0] = FAIL + "";
res[1] = e.toString();
return res;
}
}
</pre>
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