[SOLVED] FTPClient cannot resolve host even with internet permission

FTPClient cannot resolve host even with internet permission

I've added the correct permission into my AndroidManifest.XML file to enable me connect to the internet from my app

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.my_test_app">
<uses-permission android:name="android.permission.INTERNET" />

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity android:name=".LogOn"></activity>
    <activity android:name=".ftpDetails"/>
    <activity android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

But, when trying to establish an FTP connection like so

FTPClient FtpClient = new FTPClient();

FtpClient.connect(ftpServer + ftpFolder); // THIS IS WHERE THE ERROR OCCURS
FtpClient.login(ftpUser, ftpPass);

int reply = FtpClient.getReplyCode();

The error occurs on FtpClient.connect(ftpServer + ftpFolder);

The values in the variables are in the format of

ftpServer = ftp://ftp.myServer.co.uk/mySite.co.uk/
ftpFolder = My Folder (Test)

I can get to this folder through Windows File Explorer on my PC so I know it's a valid path, but when testing in the app I get the following error

Unable to resolve host "ftp://ftp.myServer.co.uk/mySite.co.uk/My Folder": No address associated with hostname

Solution

The argument of FTPClient.connect method (or actually the inherited SocketClient.connect is hostname, not URL.

So it should be:

ftpServer = "ftp.myServer.co.uk";