我正在尝试使用反射在WifiConfiguration类中设置字段，更具体地说是ipAssignment字段。
以下是WifiConfiguration类关于ipAssignment字段的内容：
...
/**
* @hide
*/
public enum IpAssignment {
/* Use statically configured IP settings. Configuration can be accessed
* with linkProperties */
STATIC,
/* Use dynamically configured IP settigns */
DHCP,
/* no IP details are assigned, this is used to indicate
* that any existing IP settings should be retained */
UNASSIGNED
}
/**
* @hide
*/
public IpAssignment ipAssignment;
...
可以在此处找到完整的WifiConfiguration班级代码：http://grepcode.com/file/repository.grepcode.com/java/ext/com.google.android/android/4.0.1_r1/android/net/wifi/WifiConfiguration.java#WifiConfiguration.0ipAssignment
默认情况下，似乎ipAssignment设置为UNASSIGNED，我想将其设置为DHCP，但我无法弄清楚如何执行此操作，因为我正在使用Reflection。 / p>
以下是我的尝试：
ipAssignment.set(ipAssignment.get(wifiConfig), Enum.valueOf((Class<Enum>) ipAssignment.getType().asSubclass(Enum.class), "DHCP"));
但它不起作用，因为值不会改变，如下所示：
06-06 15:01:27.357: D/Enterprise Setting(5426): Setting TLS
06-06 15:01:27.357: D/Enterprise Setting(5426): Setting userName
06-06 15:01:27.357: D/Enterprise Setting(5426): Setting Password
06-06 15:01:27.367: E/WifiManager(5426): addNetwork() enter. config=* ID: -1 SSID: "MySSID" BSSID: null PRIO: 0
06-06 15:01:27.367: E/WifiManager(5426): KeyMgmt: WPA_EAP IEEE8021X Protocols: WPA RSN
06-06 15:01:27.367: E/WifiManager(5426): AuthAlgorithms:
06-06 15:01:27.367: E/WifiManager(5426): PairwiseCiphers: TKIP CCMP
06-06 15:01:27.367: E/WifiManager(5426): GroupCiphers: WEP40 WEP104 TKIP CCMP
06-06 15:01:27.367: E/WifiManager(5426): PSK:
06-06 15:01:27.367: E/WifiManager(5426): eap: TLS
06-06 15:01:27.367: E/WifiManager(5426): phase2:
06-06 15:01:27.367: E/WifiManager(5426): identity: userName
06-06 15:01:27.367: E/WifiManager(5426): anonymous_identity:
06-06 15:01:27.367: E/WifiManager(5426): password: password
06-06 15:01:27.367: E/WifiManager(5426): client_cert:
06-06 15:01:27.367: E/WifiManager(5426): private_key:
06-06 15:01:27.367: E/WifiManager(5426): ca_cert:
06-06 15:01:27.367: E/WifiManager(5426): IP assignment: UNASSIGNED
06-06 15:01:27.367: E/WifiManager(5426): Proxy settings: UNASSIGNED
06-06 15:01:27.367: E/WifiManager(5426): LinkAddresses: [] Routes: [] DnsAddresses: []
06-06 15:01:27.367: E/WifiManager(5426): getNameForPid(5426)=com.AutoSSSIDConnection
06-06 15:01:27.407: E/WifiManager(5426): isWifiEnabled() enter.
06-06 15:01:27.407: E/WifiManager(5426): getNameForPid(5426)=com.AutoSSSIDConnection
06-06 15:01:27.407: E/WifiManager(5426): getWifiState() enter.
06-06 15:01:27.407: E/WifiManager(5426): getNameForPid(5426)=com.AutoSSSIDConnection
06-06 15:01:27.417: D/Wifi Connection(5426): Wifi Connected: true
06-06 15:01:27.417: I/System.out(5426): Wifi Connected: true
06-06 15:01:27.417: E/WifiManager(5426): getConnectionInfo() enter.
06-06 15:01:27.417: E/WifiManager(5426): getNameForPid(5426)=com.AutoSSSIDConnection
06-06 15:01:27.427: I/System.out(5426): Wifi Info: SSID: <none>, BSSID: <none>, MAC: 8c:e0:81:b1:f7:ed, Supplicant state: INACTIVE, RSSI: -200, Link speed: -1, Net ID: -1, Explicit connect: false
以下是我用来执行此操作的所有代码：
package com.AutoSSSIDConnection;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import android.net.wifi.WifiConfiguration;
import android.util.Log;
public class WPAConfiguration {
private static final String INT_PRIVATE_KEY = "private_key";
private static final String INT_PHASE2 = "phase2";
private static final String INT_PASSWORD = "password";
private static final String INT_IDENTITY = "identity";
private static final String INT_EAP = "eap";
private static final String INT_CLIENT_CERT = "client_cert";
private static final String INT_CA_CERT = "ca_cert";
private static final String INT_ANONYMOUS_IDENTITY = "anonymous_identity";
private static final String INT_ENTERPRISEFIELD_NAME = "android.net.wifi.WifiConfiguration$EnterpriseField";
private static final String INT_IPASSIGNMENT = "android.net.wifi.WifiConfiguration$IpAssignment";
private static final String INT_PROXYSETTINGS = "android.net.wifi.WifiConfiguration$ProxySettings";
private static final String ENTERPRISE_EAP = "TLS";
private static final String INT_IP_ASSIGNMENT = "ipAssignment";
private static final String INT_PROXY_SETTINGS = "proxySettings";
public static WifiConfiguration setWifiConfigurations(WifiConfiguration wifiConfig, String SSID, String userName, String userPass)
{
/*define basic configuration settings*/
/*Access Point*/
wifiConfig.SSID = SSID;
/*Priority*/
wifiConfig.priority = 0;
/*Enable Hidden SSID's*/
wifiConfig.hiddenSSID = false;
/*Key Management*/
wifiConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.IEEE8021X);
wifiConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_EAP);
/*Set Group Ciphers*/
wifiConfig.allowedGroupCiphers.clear();
wifiConfig.allowedGroupCiphers.clear();
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
/*Set Pairwise Ciphers*/
wifiConfig.allowedPairwiseCiphers.clear();
wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
/*Set Protocols*/
wifiConfig.allowedProtocols.clear();
wifiConfig.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
wifiConfig.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
/*Set Enterprise Settings Using Reflection*/
try
{
Class<?> wifiEnterpriseField = null;
Class<?> wifiIpAssignmentField = null;
Class<?> wifiProxySettingsField = null;
boolean enterpriseFieldType = true;
boolean ipAssignmentFieldType = true;
boolean proxySettingsFieldType = true;
Field anonymousId = null, caCert = null, clientCert = null, eap = null, identity = null, password = null, phase2 = null, privateKey = null, ipAssignment = null, proxy = null;
Method setValue = null;
Method setIpName = null;
Method setProxy = null;
Class<?>[] wifiClasses = WifiConfiguration.class.getClasses();
/*Get Enterprise/IP Assignment/Proxy Setting Field Class to Modify*/
for(Class<?> wifiClass : wifiClasses)
{
if(wifiClass.getName().equals(INT_ENTERPRISEFIELD_NAME))
{
wifiEnterpriseField = wifiClass;
}
else if(wifiClass.getName().equals(INT_IPASSIGNMENT))
{
wifiIpAssignmentField = wifiClass;
}
else if(wifiClass.getName().equals(INT_PROXY_SETTINGS))
{
wifiProxySettingsField = wifiClass;
}
}
/*Certain OS (Cupcake & Doughnut) access the enterprise field directly*/
if(wifiEnterpriseField == null)
{
enterpriseFieldType = false;
}
if(wifiIpAssignmentField == null)
{
ipAssignmentFieldType = false;
}
if(wifiProxySettingsField == null)
{
proxySettingsFieldType = false;
}
/*Get Fields*/
Log.d("Enterprise Setting", "Getting Fields ");
Field[] wifiFields = WifiConfiguration.class.getFields();
for(Field wifiField : wifiFields)
{
if(wifiField.getName().equals(INT_ANONYMOUS_IDENTITY))
{
anonymousId = wifiField;
Log.d("Enterprise Setting", "Getting Field: " + wifiField);
}
else if(wifiField.getName().equals(INT_CA_CERT))
{
caCert = wifiField;
Log.d("Enterprise Setting", "Getting Field: " + wifiField);
}
else if(wifiField.getName().equals(INT_CLIENT_CERT))
{
clientCert = wifiField;
Log.d("Enterprise Setting", "Getting Field: " + wifiField);
}
else if(wifiField.getName().equals(INT_EAP))
{
eap = wifiField;
Log.d("Enterprise Setting", "Getting Field: " + wifiField);
}
else if(wifiField.getName().equals(INT_IDENTITY))
{
identity = wifiField;
Log.d("Enterprise Setting", "Getting Field: " + wifiField);
}
else if(wifiField.getName().equals(INT_PASSWORD))
{
password = wifiField;
Log.d("Enterprise Setting", "Getting Field: " + wifiField);
}
else if(wifiField.getName().equals(INT_PHASE2))
{
phase2 = wifiField;
Log.d("Enterprise Setting", "Getting Field: " + wifiField);
}
else if(wifiField.getName().equals(INT_PRIVATE_KEY))
{
privateKey = wifiField;
Log.d("Enterprise Setting", "Getting Field: " + wifiField);
}
else if(wifiField.getName().equals(INT_IP_ASSIGNMENT))
{
ipAssignment = wifiField;
Log.d("Enterprise Setting", "Getting Field: " + wifiField);
}
else if(wifiField.getName().equals(INT_PROXY_SETTINGS))
{
proxy = wifiField;
Log.d("Enterprise Setting", "Getting Field: " + wifiField);
}
else
{
Log.d("Enterprise Setting", "Getting Field: " + wifiField);
}
}
/*Get method to set value of enterprise fields*/
if(enterpriseFieldType)
{
for(Method method : wifiEnterpriseField.getMethods())
{
Log.d("Get Methods", "Enterprise Method: " + method);
if(method.getName().trim().equals("setValue"))
{
setValue = method;
break;
}
}
}
/*Get method to set value of IP Assignment fields*/
if(ipAssignmentFieldType)
{
for(Method method : wifiIpAssignmentField.getMethods())
{
Log.d("Get Methods", "IP Method: " + method);
if(method.getName().trim().equals("setName"))
{
setIpName = method;
break;
}
}
}
/*Get method to set value of IP Assignment fields*/
if(proxySettingsFieldType)
{
for(Method method : wifiProxySettingsField.getMethods())
{
Log.d("Get Methods", "Proxy Method: " + method);
if(method.getName().trim().equals("setName"))
{
setProxy = method;
break;
}
}
}
/*Set EAP*/
if(enterpriseFieldType)
{
setValue.invoke(eap.get(wifiConfig), ENTERPRISE_EAP);
Log.d("Enterprise Setting", "Setting " + ENTERPRISE_EAP);
}
else
{
eap.set(wifiConfig, ENTERPRISE_EAP);
}
/*Set Identity*/
if(enterpriseFieldType)
{
setValue.invoke(identity.get(wifiConfig), userName);
Log.d("Enterprise Setting", "Setting " + userName);
}
else
{
identity.set(wifiConfig, userName);
}
/*Set user password*/
if(enterpriseFieldType)
{
setValue.invoke(password.get(wifiConfig), userPass);
Log.d("Enterprise Setting", "Setting " + userPass);
}
else
{
password.set(wifiConfig, userPass);
}
/*Set IP Protocol*/
if(ipAssignmentFieldType)
{
ipAssignment.set(ipAssignment.get(wifiConfig), Enum.valueOf((Class<Enum>) ipAssignment.getType().asSubclass(Enum.class), "DHCP"));
//ipAssignment.set(wifiConfig, "DHCP");
Log.d("Enterprise Setting", "Setting " + ipAssignment);
}
else
{
ipAssignment.set(wifiConfig, "DHCP");
}
/*Set Proxy Protocol*/
if(proxySettingsFieldType)
{
setProxy.invoke(proxy.get(wifiConfig), "NONE");
Log.d("Enterprise Setting", "Setting " + proxy);
}
else
{
proxy.set(wifiConfig, "NONE");
}
}
catch(Exception e)
{
Log.e("ERROR!!!", "Error: " + e);
}
return wifiConfig;
}
}
以下是用于调用上述类的Android代码：
package com.AutoSSSIDConnection;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.util.Log;
import android.view.Menu;
public class MainActivity extends Activity {
private final String userName = "userName";
private final String userPassword = "Password";
private final String SSID = "\"MySSID\"";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//check for current network connection to specific SSID
ConnectivityManager cm = (ConnectivityManager)this.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
if(activeNetwork == null)
{
this.connectToWifi(SSID, userName, userPassword);
}
else
{
boolean isConnected = activeNetwork.isConnectedOrConnecting();
if(!isConnected)
{
this.connectToWifi(SSID, userName, userPassword);
}
}
}
public void connectToWifi(String SSID, String userName, String userPassword)
{
WifiConfiguration con = new WifiConfiguration();
con = WPAConfiguration.setWifiConfigurations(con, SSID, userName, userPassword);
WifiManager wfm = (WifiManager) this.getSystemService(Context.WIFI_SERVICE);
wfm.addNetwork(con);
boolean isWifiConnected = wfm.isWifiEnabled();
Log.d("Wifi Connection", "Wifi Connected: " + isWifiConnected);
System.out.println("Wifi Connected: " + isWifiConnected);
System.out.println("Wifi Info: " + wfm.getConnectionInfo());
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
答案 0 :(得分：2)
你检查了
ipAssignment.set(wifiConfig, Enum.valueOf((Class<Enum>) ipAssignment.getType().asSubclass(Enum.class), "DHCP"));
而不是
ipAssignment.set(ipAssignment.get(wifiConfig), Enum.valueOf((Class<Enum>) ipAssignment.getType().asSubclass(Enum.class), "DHCP"));
答案 1 :(得分：1)
你使用反射的原因是什么？ 作业很简单 -
ipAssignment = IpAssignment.DHCP;