psychoapk/app/src/main/java/com/example/notifyservice/PostRequest.java

package com.example.notifyservice;

import android.content.Context;
import android.util.JsonReader;
import android.util.Log;

import androidx.annotation.NonNull;

import org.json.JSONArray;
import org.json.JSONObject;

import java.io.IOException;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;

public class PostRequest {

    private Context context;
    private String BASE_URL = "https://e2df-85-203-39-142.ngrok-free.app/";
    private PostRequestCallback callback;

    public PostRequest(Context context, PostRequestCallback callback) {
        this.context = context;
        this.callback = callback;
    }

    public final OkHttpClient client = new OkHttpClient();

    public void execute(String... params) {
        String urlString = params[0];
        String jsonData = params[1];

        Request request = new Request.Builder()
                .url(BASE_URL + urlString)
                .post(RequestBody.create(jsonData.getBytes()))
                .build();

        Call call = client.newCall(request);
        call.enqueue(new Callback() {
            public void onResponse(@NonNull Call call, @NonNull Response response) throws IOException {
                onPostExecute(response.body() != null ? response.body().string() : "");
            }

            public void onFailure(@NonNull Call call, @NonNull IOException e) {

            }
        });
    }

    protected void onPostExecute(String result) {
        try {
            String hash = (new JSONObject(result)).getString("hash");
            callback.onPostResponse(hash);
        } catch (Exception e) {
        }
        // Handle the JSON response here
    }
}