Enable Access Point in android programatically

[bozhi91]

I'm trying to enable the wifi Access-Point on android device programmatically. The access-pint is already created and works fine. I only want to enable/disable it by code. The code doesn't work very well. The AP is enabled(by code) but I can't connect to the AP from any other device. However, if I disable and then enable the AP manually, then I can connect to the AP. Here's my code:

final class WifiApManager {
    private static final int WIFI_AP_STATE_FAILED = 4;
    private final WifiManager mWifiManager;
    private final String TAG = "Wifi Access Manager";
    private Method wifiControlMethod;
    private Method wifiApConfigurationMethod;
    private Method wifiApState;

    @SuppressLint("RestrictedApi")
    public WifiApManager( Context context) throws SecurityException, NoSuchMethodException {
        context           = Preconditions.checkNotNull(context);
        mWifiManager      = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
        wifiControlMethod = mWifiManager.getClass().getMethod("setWifiApEnabled", WifiConfiguration.class,boolean.class);
        wifiApConfigurationMethod = mWifiManager.getClass().getMethod("getWifiApConfiguration",null);
        wifiApState = mWifiManager.getClass().getMethod("getWifiApState");
    }
    @SuppressLint("RestrictedApi")
    public boolean setWifiApState( WifiConfiguration config, boolean enabled) {
        config = Preconditions.checkNotNull(config);
        try {
            if (enabled) {
                mWifiManager.setWifiEnabled(!enabled);
            }
            return (Boolean) wifiControlMethod.invoke(mWifiManager, config, enabled);
        } catch (Exception e) {
            Log.e(TAG, "", e);
            return false;
        }
    }
    public WifiConfiguration getWifiApConfiguration() {
        try{
            return (WifiConfiguration)wifiApConfigurationMethod.invoke(mWifiManager, null);
        }
        catch(Exception e)
        {
            return null;
        }
    }
    public int getWifiApState() {
        try {
            return (Integer)wifiApState.invoke(mWifiManager);
        } catch (Exception e) {
            Log.e(TAG, "", e);
            return WIFI_AP_STATE_FAILED;
        }
    }
}

All the permissions are granted in the manifest file and I don't see any error logs in the console. Can you tell me if I'm missing something?

Thanks!