How to upload a file to FTP server from your Android App Java code?
In this tutorial, it shows the steps to develop your Android app to upload an image file to the FTP server using FTP Client commands.
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Complete source code and other details/ steps of this video are posted in the below link:
https://programmerworld.co/android/ho...
GitHub: https://github.com/programmerworld199...
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However, the main Java code is copied below also for reference:
package com.programmerworld.uploadfiletoftp;
import static android.Manifest.permission.READ_MEDIA_IMAGES;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.os.StrictMode;
import android.os.storage.StorageManager;
import android.os.storage.StorageVolume;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import androidx.activity.EdgeToEdge;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;
import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
public class MainActivity extends AppCompatActivity {
private EditText editTextUserName, editTextPassword;
private TextView textView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
EdgeToEdge.enable(this);
setContentView(R.layout.activity_main);
ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) - {
Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
ActivityCompat.requestPermissions(this,
new String[]{READ_MEDIA_IMAGES},
PackageManager.PERMISSION_GRANTED);
editTextPassword = findViewById(R.id.editTextTextPassword);
editTextUserName = findViewById(R.id.editTextUserName);
textView = findViewById(R.id.textViewStatus);
StrictMode.ThreadPolicy threadPolicy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(threadPolicy);
return insets;
});
}
public void buttonUploadFile(View view){
StorageManager storageManager = (StorageManager) getSystemService(STORAGE_SERVICE);
StorageVolume storageVolume = storageManager.getStorageVolumes().get(0); // 0 for internal Storage
File fileImage = new File(storageVolume.getDirectory().getPath() + "/Download/images.jpg");
FTPClient ftpClient = new FTPClient();
try {
InputStream inputStream = Files.newInputStream(fileImage.toPath());
ftpClient.connect("192.168.1.1");
ftpClient.login(editTextUserName.getText().toString(), editTextPassword.getText().toString());
ftpClient.changeWorkingDirectory("usb1_1/Uploads/");
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
ftpClient.setFileTransferMode(FTP.BINARY_FILE_TYPE);
ftpClient.enterLocalPassiveMode();
ftpClient.sendCommand("OPTS UTF8 ON");
boolean booleanStatus = ftpClient.storeFile("image_remoteFile.jpg", inputStream);
textView.setText(String.valueOf("Status - " + booleanStatus));
inputStream.close();
ftpClient.logout();
ftpClient.disconnect();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
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