在Android 6.x(棉花糖)中以编程方式设置静态IP和网关 [英] Set static IP and gateway programmatically in Android 6.x (Marshmallow)
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问题描述
有人可以告诉我如何在Android 6中以编程方式设置静态IP和网关吗?
Settings.System 不再工作，咕go说API级别17中不推荐使用WIFI_STATIC_IP，而应改为使用WifiManger.不幸的是，我在WifiManger和WifiConfiguration类中找不到任何有关它的信息.
解决方案
由于没有正式的API，我不得不通过修改以下 .该解决方案适用于Lollipop或更高版本的设备.
@SuppressWarnings("unchecked")
public static void setStaticIpConfiguration(WifiManager manager, WifiConfiguration config, InetAddress ipAddress, int prefixLength, InetAddress gateway, InetAddress[] dns) throws ClassNotFoundException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, NoSuchMethodException, NoSuchFieldException, InstantiationException {
// First set up IpAssignment to STATIC.
Object ipAssignment = getEnumValue("android.net.IpConfiguration$IpAssignment", "STATIC");
callMethod(config, "setIpAssignment", new String[]{"android.net.IpConfiguration$IpAssignment"}, new Object[]{ipAssignment});
// Then set properties in StaticIpConfiguration.
Object staticIpConfig = newInstance("android.net.StaticIpConfiguration");
Object linkAddress = newInstance("android.net.LinkAddress", new Class<?>[]{InetAddress.class, int.class}, new Object[]{ipAddress, prefixLength});
setField(staticIpConfig, "ipAddress", linkAddress);
setField(staticIpConfig, "gateway", gateway);
getField(staticIpConfig, "dnsServers", ArrayList.class).clear();
for (int i = 0; i < dns.length; i++)
getField(staticIpConfig, "dnsServers", ArrayList.class).add(dns[i]);
callMethod(config, "setStaticIpConfiguration", new String[]{"android.net.StaticIpConfiguration"}, new Object[]{staticIpConfig});
int netId = manager.updateNetwork(config);
boolean result = netId != -1;
if (result) {
boolean isDisconnected = manager.disconnect();
boolean configSaved = manager.saveConfiguration();
boolean isEnabled = manager.enableNetwork(config.networkId, true);
boolean isReconnected = manager.reconnect();
}
}
Helper函数，
public static WifiConfiguration getCurrentWiFiConfiguration(Context context) {
WifiConfiguration wifiConf = null;
ConnectivityManager connManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
if (networkInfo.isConnected()) {
final WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
final WifiInfo connectionInfo = wifiManager.getConnectionInfo();
if (connectionInfo != null && !TextUtils.isEmpty(connectionInfo.getSSID())) {
List<WifiConfiguration> configuredNetworks = wifiManager.getConfiguredNetworks();
if (configuredNetworks != null) {
for (WifiConfiguration conf : configuredNetworks) {
if (conf.networkId == connectionInfo.getNetworkId()) {
wifiConf = conf;
break;
}
}
}
}
}
return wifiConf;
}
private static Object newInstance(String className) throws ClassNotFoundException, InstantiationException, IllegalAccessException, NoSuchMethodException, IllegalArgumentException, InvocationTargetException {
return newInstance(className, new Class<?>[0], new Object[0]);
}
private static Object newInstance(String className, Class<?>[] parameterClasses, Object[] parameterValues) throws NoSuchMethodException, InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, ClassNotFoundException {
Class<?> clz = Class.forName(className);
Constructor<?> constructor = clz.getConstructor(parameterClasses);
return constructor.newInstance(parameterValues);
}
@SuppressWarnings({"unchecked", "rawtypes"})
private static Object getEnumValue(String enumClassName, String enumValue) throws ClassNotFoundException {
Class<Enum> enumClz = (Class<Enum>) Class.forName(enumClassName);
return Enum.valueOf(enumClz, enumValue);
}
private static void setField(Object object, String fieldName, Object value) throws IllegalAccessException, IllegalArgumentException, NoSuchFieldException {
Field field = object.getClass().getDeclaredField(fieldName);
field.set(object, value);
}
private static <T> T getField(Object object, String fieldName, Class<T> type) throws IllegalAccessException, IllegalArgumentException, NoSuchFieldException {
Field field = object.getClass().getDeclaredField(fieldName);
return type.cast(field.get(object));
}
private static void callMethod(Object object, String methodName, String[] parameterTypes, Object[] parameterValues) throws ClassNotFoundException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, NoSuchMethodException {
Class<?>[] parameterClasses = new Class<?>[parameterTypes.length];
for (int i = 0; i < parameterTypes.length; i++)
parameterClasses[i] = Class.forName(parameterTypes[i]);
Method method = object.getClass().getDeclaredMethod(methodName, parameterClasses);
method.invoke(object, parameterValues);
}
要使用它，
WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
WifiConfiguration wifiConf = WifiHelper.getCurrentWiFiConfiguration(getApplicationContext());
try {
setStaticIpConfiguration(wifiManager, wifiConf,
InetAddress.getByName("192.168.0.100"),
24,
InetAddress.getByName("10.0.0.2"),
new InetAddress[]{InetAddress.getByName("10.0.0.3"), InetAddress.getByName("10.0.0.4")});
} catch (Exception e) {
e.printStackTrace();
}
最后，您需要在清单中添加这些权限，
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
Can anybody tell me how can I set the static IP and gateway programmatically in Android 6?
Settings.System is not working anymore and goolgle says WIFI_STATIC_IP was deprecated in API level 17 and Use WifiManger instead. Unfortunately I cannot find anything about it in WifiManger and WifiConfigurationclasses.
解决方案
Since there's no official API I have to come up with a solution by modifying samples from the following code snipet and this answer. This solution works on devices from Lollipop upwards.
@SuppressWarnings("unchecked")
public static void setStaticIpConfiguration(WifiManager manager, WifiConfiguration config, InetAddress ipAddress, int prefixLength, InetAddress gateway, InetAddress[] dns) throws ClassNotFoundException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, NoSuchMethodException, NoSuchFieldException, InstantiationException {
// First set up IpAssignment to STATIC.
Object ipAssignment = getEnumValue("android.net.IpConfiguration$IpAssignment", "STATIC");
callMethod(config, "setIpAssignment", new String[]{"android.net.IpConfiguration$IpAssignment"}, new Object[]{ipAssignment});
// Then set properties in StaticIpConfiguration.
Object staticIpConfig = newInstance("android.net.StaticIpConfiguration");
Object linkAddress = newInstance("android.net.LinkAddress", new Class<?>[]{InetAddress.class, int.class}, new Object[]{ipAddress, prefixLength});
setField(staticIpConfig, "ipAddress", linkAddress);
setField(staticIpConfig, "gateway", gateway);
getField(staticIpConfig, "dnsServers", ArrayList.class).clear();
for (int i = 0; i < dns.length; i++)
getField(staticIpConfig, "dnsServers", ArrayList.class).add(dns[i]);
callMethod(config, "setStaticIpConfiguration", new String[]{"android.net.StaticIpConfiguration"}, new Object[]{staticIpConfig});
int netId = manager.updateNetwork(config);
boolean result = netId != -1;
if (result) {
boolean isDisconnected = manager.disconnect();
boolean configSaved = manager.saveConfiguration();
boolean isEnabled = manager.enableNetwork(config.networkId, true);
boolean isReconnected = manager.reconnect();
}
}
Helper functions,
public static WifiConfiguration getCurrentWiFiConfiguration(Context context) {
WifiConfiguration wifiConf = null;
ConnectivityManager connManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
if (networkInfo.isConnected()) {
final WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
final WifiInfo connectionInfo = wifiManager.getConnectionInfo();
if (connectionInfo != null && !TextUtils.isEmpty(connectionInfo.getSSID())) {
List<WifiConfiguration> configuredNetworks = wifiManager.getConfiguredNetworks();
if (configuredNetworks != null) {
for (WifiConfiguration conf : configuredNetworks) {
if (conf.networkId == connectionInfo.getNetworkId()) {
wifiConf = conf;
break;
}
}
}
}
}
return wifiConf;
}
private static Object newInstance(String className) throws ClassNotFoundException, InstantiationException, IllegalAccessException, NoSuchMethodException, IllegalArgumentException, InvocationTargetException {
return newInstance(className, new Class<?>[0], new Object[0]);
}
private static Object newInstance(String className, Class<?>[] parameterClasses, Object[] parameterValues) throws NoSuchMethodException, InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, ClassNotFoundException {
Class<?> clz = Class.forName(className);
Constructor<?> constructor = clz.getConstructor(parameterClasses);
return constructor.newInstance(parameterValues);
}
@SuppressWarnings({"unchecked", "rawtypes"})
private static Object getEnumValue(String enumClassName, String enumValue) throws ClassNotFoundException {
Class<Enum> enumClz = (Class<Enum>) Class.forName(enumClassName);
return Enum.valueOf(enumClz, enumValue);
}
private static void setField(Object object, String fieldName, Object value) throws IllegalAccessException, IllegalArgumentException, NoSuchFieldException {
Field field = object.getClass().getDeclaredField(fieldName);
field.set(object, value);
}
private static <T> T getField(Object object, String fieldName, Class<T> type) throws IllegalAccessException, IllegalArgumentException, NoSuchFieldException {
Field field = object.getClass().getDeclaredField(fieldName);
return type.cast(field.get(object));
}
private static void callMethod(Object object, String methodName, String[] parameterTypes, Object[] parameterValues) throws ClassNotFoundException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, NoSuchMethodException {
Class<?>[] parameterClasses = new Class<?>[parameterTypes.length];
for (int i = 0; i < parameterTypes.length; i++)
parameterClasses[i] = Class.forName(parameterTypes[i]);
Method method = object.getClass().getDeclaredMethod(methodName, parameterClasses);
method.invoke(object, parameterValues);
}
To use it,
WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
WifiConfiguration wifiConf = WifiHelper.getCurrentWiFiConfiguration(getApplicationContext());
try {
setStaticIpConfiguration(wifiManager, wifiConf,
InetAddress.getByName("192.168.0.100"),
24,
InetAddress.getByName("10.0.0.2"),
new InetAddress[]{InetAddress.getByName("10.0.0.3"), InetAddress.getByName("10.0.0.4")});
} catch (Exception e) {
e.printStackTrace();
}
Finally you need to add those permissions in the manifest,
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
这篇关于在Android 6.x(棉花糖)中以编程方式设置静态IP和网关的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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