如何在android中连接到无线网络？
作者：互联网
我已设法扫描无线网络并在我的应用程序中获取扫描结果.但有没有办法可以使用我的应用程序本身连接到他们？我想知道是否必须为我正在尝试连接的网络指定加密类型？我的要求是连接到任何无线网络而不管它的加密类型？
有任何想法吗？
谢谢
解决方法:
要连接到实施以下步骤所需的WiFi AP：
>扫描WiFi
确保您有适当的AP.请记住,您必须为安全的AP提供密码.假设您知道自己喜欢的女巫AP,现在我们将采取其他措施：
>创建新的个人资料
我们需要支持以下信息：
应该是什么类型的AP：
开放点,
WEP,
WPA,
(或WPA2),具有共享密钥身份验证,
WPA2-Enterprise(RADIUS服务器身份验证)
优先级 – 优先级确定给予网络的优先级
选择与之相关的接入点时,通过wpa_supplicant
关联(我设置默认1000)
SSID – AP名称
密码 – 如果它是安全的AP.
这是一个演示该技术的片段方法：
我使用单个枚举TEncMode encMode来表示switch语句
....
WifiConfiguration wc = new WifiConfiguration();
wc.allowedAuthAlgorithms.clear();
wc.allowedGroupCiphers.clear();
wc.allowedKeyManagement.clear();
wc.allowedPairwiseCiphers.clear();
wc.allowedProtocols.clear();
switch (encMode) {
case ENC_WEP:
// If password is empty, it should be left untouched
if (!TextUtils.isEmpty(pswd)) {
wc.wepKeys[0] = TextUtil.convertToQuotedString(pswd);
}
wc.wepTxKeyIndex = 0;
wc.allowedAuthAlgorithms.set(AuthAlgorithm.OPEN);
wc.allowedAuthAlgorithms.set(AuthAlgorithm.SHARED);
wc.allowedKeyManagement.set(KeyMgmt.NONE);
wc.allowedGroupCiphers.set(GroupCipher.WEP40);
wc.allowedGroupCiphers.set(GroupCipher.WEP104);
break;
case ENC_WPA:
case ENC_WPA2:
wc.allowedGroupCiphers.set(GroupCipher.TKIP);
wc.allowedGroupCiphers.set(GroupCipher.CCMP);
wc.allowedKeyManagement.set(KeyMgmt.WPA_PSK);
wc.allowedPairwiseCiphers.set(PairwiseCipher.CCMP);
wc.allowedPairwiseCiphers.set(PairwiseCipher.TKIP);
wc.allowedProtocols.set(Protocol.RSN);
wc.allowedProtocols.set(Protocol.WPA);
// If password is empty, it should be left untouched
if (!TextUtils.isEmpty(pswd)) {
if (pswd.length() == 64) {
// Goes unquoted as hex
wc.preSharedKey = pswd;
} else {
// Goes quoted as ASCII
wc.preSharedKey = TextUtil.convertToQuotedString(pswd);
}
}
break;
// case ENC_WPA2_ENTERPRISE:
....
// break;
default:
wc.allowedKeyManagement.set(KeyMgmt.NONE);
break;
}
// This is must be quoted according to the documentation
// http://developer.android.com/reference/android/net/wifi/WifiConfiguration.html#SSID
wc.SSID = TextUtil.convertToQuotedString(ssid.toString());
wc.hiddenSSID = false;
wc.priority = prior;
wc.BSSID = null;
wc.status = WifiConfiguration.Status.ENABLED;
现在我们根据我们的要求配置了新的AP.现在让我们创建它：
>仅创建新的AP
....
int res = -1;
WifiManager m_WifiManager = (WifiManager)m_context.getSystemService(Context.WIFI_SERVICE);
....
/** If profile exists, do nothing */
if(ifConnectionProfileExists(ssid) == true){
Log.i(Constants.TAG, "createConnectionProfile :: " + "CREATE_PROFILE ssid=" + ssid + " exists");
}
else{
res = m_WifiManager.addNetwork(wc);
Log.i(Constants.TAG, "createConnectionProfile :: " + " CREATE_PROFILE ssid=" + ssid + " dosn't exist, addNetwork ... res = " + res);
// Don't make to AP high priority to connect
//m_WifiManager.enableNetwork(res, false);
m_WifiManager.saveConfiguration();
if(res != -1){
// profile created
}
else{
// failed to add profile
}
}
如果你跳过这个实现,关闭WiFi关闭你创建的AP将消失
m_WifiManager.saveConfiguration();
到目前为止,我们可以等待android连接到我们的新AP,或者我们可以自己做
>创建并连接到AP
int res = -1;
/** If profile exists, do nothing */
if(ifConnectionProfileExists(ssid) == true){
res = getNetIdBySSID(ssid);
}
else{
res = m_WifiManager.addNetwork(wc);
}
// Don't make to AP high priority to connect
boolean b = m_WifiManager.enableNetwork(res, true);
if(b == true){
fixSupplicant();
m_WifiManager.saveConfiguration();
// start connect to AP
}
else{
// failed
}
....
private void fixSupplicant() {
final SupplicantState state = m_WifiManager.getConnectionInfo().getSupplicantState();
boolean isReconnectDone = false;
if ((state == SupplicantState.SCANNING)
|| (state == SupplicantState.DISCONNECTED)
|| (state == SupplicantState.DORMANT)) {
isReconnectDone = m_WifiManager.reconnect();;
}
}
private boolean ifConnectionProfileExists(String ssid){
List<WifiConfiguration> apProfiles = m_WifiManager.getConfiguredNetworks();
// remove profile if exists:
for (int i = 0; i < apProfiles.size(); i++) {
final WifiConfiguration ap = apProfiles.get(i);
if ((ap.SSID != null)) {
// try to find by SSID
if (TextUtils.equals(ap.SSID), ssid) {
return true;
}
}
}
return false;
}
Enum TEncMode
/**
* Represents encryption types modes of access points
*/
public enum TEncMode {
/**
* No encryption (open spot)
*/
ENC_NONE(0),
/*
* General encryption
*/
ENC_UNKNOWN(1),
/**
* WEP
*/
ENC_WEP(2),
/**
* WPA
*/
ENC_WPA(3),
/**
* WPA (or WPA2), with shared-key authentication
*/
ENC_WPA2(4),
/**
* WPA2-Enterprise (RADIUS Server authentication).
*/
ENC_WPA2_ENTERPRISE(5)
;
public static TEncMode
FromIntToEnum(
int value ) throws Exception
{
for ( TEncMode c : TEncMode.values() ) {
if ( c.mId == value ) {
return c;
}
}
throw new AgException( new StringBuilder("Illegal TEncMode: ").append(value).toString() );
}
public int
FromEnumToInt() {
return mId;
}
private TEncMode( int id ){
mId = id;
}
private int mId;
}
就这样.肯定你可以听取WiFi状态改变以捕获CONNECTED事件.因为我们不知道设备连接到您的AP需要多长时间.但我们禁用了所有其他AP并启用了新AP.我们可以从谷歌获得HTTP响应,以确保我们的AP有互联网.
要我添加这个方法：
/**
* Surround the given string in quotes.
*
* @param string The text to surround in quotes.
* @return string wrapped with quotes.
*/
static public String convertToQuotedString(String string){
if (string==null) {
string = "";
}
empty(workBuffer);
workBuffer.append("\"");
workBuffer.append(string);
workBuffer.append("\"");
return workBuffer.toString();
}
标签：android,android-wifi,android-wireless 来源： https://codeday.me/bug/20190901/1784927.html