Android利用反射实现设置wifi代理

	public static void setObjField(Object obj, Object value, String name)
			throws SecurityException, NoSuchFieldException,
			IllegalArgumentException, IllegalAccessException {
		Field f = obj.getClass().getDeclaredField(name);
		f.setAccessible(true);
		f.set(obj, value);
	}


public static void setProxy(WifiConfiguration wifiConf)
			throws SecurityException, IllegalArgumentException,
			NoSuchFieldException, IllegalAccessException,
			NoSuchMethodException, ClassNotFoundException,
			InstantiationException, InvocationTargetException {
		setEnumField(wifiConf, "STATIC", "proxySettings");
		Object linkProperties = getField(wifiConf, "linkProperties");
		Class proxyPropertiesClass = Class
				.forName("android.net.ProxyProperties");
		Constructor c = proxyPropertiesClass.getConstructor(String.class,
				Integer.TYPE, String.class);
		c.setAccessible(true);
		Object properties = c.newInstance("192.168.5.121", 9999, null);
		setObjField(linkProperties,properties,"mHttpProxy");
		setObjField(wifiConf,linkProperties,"linkProperties");
	}