当然使用前需初始化wifiManager

mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);private static final String TAG = "wifiHelper";
private WifiManager mWifiManager = null;//判断WLAN状态是否开启
public boolean isWifiApOn() {Method method = null;int i = 0;try {method = mWifiManager.getClass().getMethod("getWifiApState");} catch (NoSuchMethodException e) {e.printStackTrace();}try {i = (Integer) method.invoke(mWifiManager);} catch (IllegalAccessException e) {e.printStackTrace();} catch (InvocationTargetException e) {e.printStackTrace();}Log.i(TAG, "wifi sharing state -> " + i);// 10---正在关闭；11---已关闭；12---正在开启；13---已开启return i == 13;
}
//设置WLAN状态
public boolean setWifiApEnabled(boolean enabled) {Method method = null, configMethod = null;boolean result = false;if (mWifiManager == null) {Log.i(TAG, "mWifiManager is null  -> " + result);return result;}try {configMethod = mWifiManager.getClass().getMethod("getWifiApConfiguration");method = mWifiManager.getClass().getMethod("setWifiApEnabled", WifiConfiguration.class, boolean.class);} catch (Exception e) {e.printStackTrace();}try {WifiConfiguration apConfig = (WifiConfiguration) configMethod.invoke(mWifiManager);result = (boolean) method.invoke(mWifiManager, new Object[]{apConfig, enabled});} catch (IllegalAccessException e) {e.printStackTrace();} catch (InvocationTargetException e) {e.printStackTrace();}Log.i(TAG, "setWifiApEnabled -> " + result);return result;
}//获取WLAN ＳＳＩＤ
public String getWifiApSSID() {Method method = null;String SSID = null;try {method = mWifiManager.getClass().getMethod("getWifiApConfiguration");} catch (Exception e) {e.printStackTrace();}try {WifiConfiguration apConfig = (WifiConfiguration) method.invoke(mWifiManager);SSID = apConfig.SSID;} catch (IllegalAccessException e) {e.printStackTrace();} catch (InvocationTargetException e) {e.printStackTrace();} catch (Exception e) {e.printStackTrace();}Log.i(TAG, "getWifiApSSID -> " + SSID);return SSID;
}//获取WLAN　密码
public String getWifiApSharedKey() {Method method = null;String SharedKey = null;try {method = mWifiManager.getClass().getMethod("getWifiApConfiguration");} catch (Exception e) {e.printStackTrace();}try {WifiConfiguration apConfig = (WifiConfiguration) method.invoke(mWifiManager);SharedKey = apConfig.preSharedKey;} catch (IllegalAccessException e) {e.printStackTrace();} catch (InvocationTargetException e) {e.printStackTrace();} catch (Exception e) {e.printStackTrace();}return SharedKey;
}