Andriod Development (Java)

PDF URL

import android.os.Bundle;
import android.util.Log;
import android.widget.Button;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;

import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;

import java.util.HashMap;
import java.util.Map;

public class MainActivity extends AppCompatActivity {

    private TextView textView;
    private RequestQueue queue;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        textView = findViewById(R.id.textView);
        Button button = findViewById(R.id.button);
        queue = Volley.newRequestQueue(this);

        button.setOnClickListener(view -> extractText());
    }

    private void extractText() {
        String url = "https://v1.mlapi.co/pdf/pdf-to-text";
        StringRequest postRequest = new StringRequest(Request.Method.POST, url,
                response -> textView.setText(response),
                error -> Log.e("Error", "Error: " + error.toString())) {

            @Override
            protected Map<String, String> getParams() {
                Map<String, String> params = new HashMap<>();
                params.put("pdf_url", "https://example.com/your-pdf.pdf");
                params.put("api_key", "your_api_key");
                return params;
            }
        };
        queue.add(postRequest);
    }
}

Upload PDF file

import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.widget.Button;
import android.widget.TextView;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;

import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.Volley;

import net.gotev.uploadservice.MultipartUploadRequest;
import net.gotev.uploadservice.UploadNotificationConfig;
import net.gotev.uploadservice.UploadServiceBroadcastReceiver;

import java.io.File;
import java.util.HashMap;
import java.util.Map;

public class MainActivity extends AppCompatActivity {

    private TextView textView;
    private RequestQueue queue;
    private static final int FILE_SELECT_CODE = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        textView = findViewById(R.id.textView);
        Button button = findViewById(R.id.button);
        queue = Volley.newRequestQueue(this);

        button.setOnClickListener(view -> showFileChooser());
    }

    private void showFileChooser() {
        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
        intent.setType("application/pdf");
        intent.addCategory(Intent.CATEGORY_OPENABLE);
        startActivityForResult(Intent.createChooser(intent, "Select a PDF"), FILE_SELECT_CODE);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == FILE_SELECT_CODE && resultCode == RESULT_OK && data != null) {
            Uri uri = data.getData();
            String filePath = FileUtils.getPath(this, uri);
            uploadFile(filePath);
        }
    }

    private void uploadFile(String filePath) {
        try {
            new MultipartUploadRequest(this, "https://v1.mlapi.co/pdf/pdf-to-text")
                    .addFileToUpload(filePath, "file")
                    .addParameter("api_key", "your_api_key")
                    .setNotificationConfig(new UploadNotificationConfig())
                    .setMaxRetries(2)
                    .startUpload();
        } catch (Exception e) {
            Log.e("Error", "Error: " + e.toString());
        }
    }
}