无法在Android上以编程方式连接到特定的Wifi

Question

我正在尝试连接到Android上的特定Wifi网络（WPA2），但不知何故，它无法在运行Android 4.1.2版的特定设备上运行。鉴于相同的代码正在运行Android版本4.4.2＆amp; 4.4.4。在设备上它不工作，我看到网络被成功添加，因为我可以手动连接而无需明确输入密钥。代码段粘贴在下面。不知道我在这里做错了什么或者是否有版本依赖？

private boolean connectToWifi(String networkSSID, String networkPass) {

    networkSSID = "\"" + networkSSID + "\"";

    WifiManager wifiMgr = (WifiManager)(this.getSystemService(Context.WIFI_SERVICE));
    WifiInfo wifiInfo = wifiMgr.getConnectionInfo();
    if(wifiInfo != null) {
        String name = wifiInfo.getSSID();
        if(name.equalsIgnoreCase(networkSSID)) {
            return true;
        }
    }

    int networkId = -1;
    WifiManager wifiManager = (WifiManager)(this.getSystemService(Context.WIFI_SERVICE));
    List<WifiConfiguration> list = wifiManager.getConfiguredNetworks();
    for( WifiConfiguration i : list ) {
        if(i.SSID != null && i.SSID.equals(networkSSID)) {
             break;
        }           
    }

    if(networkId == -1) {
        WifiConfiguration conf = new WifiConfiguration();
        conf.SSID = networkSSID;
        conf.preSharedKey = "\"" + networkPass + "\"";
        networkId = wifiManager.addNetwork(conf);
        if(networkId == -1)
            return false;
    }

    boolean retval = false;
    list = wifiManager.getConfiguredNetworks();
    for( WifiConfiguration i : list ) {
        if(i.SSID != null && i.SSID.equals(networkSSID)) {
            this.addDebugMessage("Trying to connect to p2p network");
            wifiManager.disconnect();
            wifiManager.enableNetwork(i.networkId, true);
            retval = wifiManager.reconnect();
            break;
        }           
    }
    return retval;
}

清单中还添加了必要的权限：

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" android:required="true"/>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" android:required="true"/>
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" android:required="true"/>
<uses-permission android:name="android.permission.INTERNET" android:required="true"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" android:required="true"/>
<uses-permission android:name="android.permission.READ_PHONE_STATE" android:required="true"/>