Scan

package com.example.scan;

import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.Toast;

import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import com.example.scan.apihelper.BaseApiService;
import com.example.scan.apihelper.UtilsApi;
import com.example.scan.apihelper.list_kursi;
import com.google.zxing.Result;

import org.json.JSONException;
import org.json.JSONObject;

import java.io.IOException;
import java.util.List;

import me.dm7.barcodescanner.zxing.ZXingScannerView;
import okhttp3.ResponseBody;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;

import static android.Manifest.permission.CAMERA;

public class scan extends AppCompatActivity implements ZXingScannerView.ResultHandler{
    private ZXingScannerView mScannerView;
    public String scanResult;
    private BaseApiService apiInterface;
    private static final int REQUEST_CAMERA = 1;
    ProgressDialog loading;
    private Dialog customDialog;
    Context mContext;
    BaseApiService mApiService;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mScannerView = new ZXingScannerView(this);   // Programmatically initialize the scanner view
        setContentView(mScannerView);
        mContext = this;
        mApiService = UtilsApi.getAPIService();

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
            if (checkPermission()) {
            } else {
                requestPermission();
            }
        }

    private boolean checkPermission() {
        return (ContextCompat.checkSelfPermission(scan.this, CAMERA) ==
                PackageManager.PERMISSION_GRANTED);
    }

    private void requestPermission() {
        ActivityCompat.requestPermissions(this, new String[]{CAMERA}, REQUEST_CAMERA);
    }


    public void displayAlertMessage(String message, DialogInterface.OnClickListener listener) {
        new AlertDialog.Builder(scan.this)
                .setMessage(message)
                .setPositiveButton("OK", listener)
                .setNegativeButton("Cancel", null)
                .create()
                .show();
    }

    @Override
    public void onResume() {
        super.onResume();
        mScannerView.setResultHandler(this); // Register ourselves as a handler for scan results.
        mScannerView.startCamera();          // Start camera on resume
    }

    @Override
    public void onPause() {
        super.onPause();
        mScannerView.stopCamera();           // Stop camera on pause
    }

    @Override
    public void handleResult(Result result) {
        mScannerView.resumeCameraPreview(this);
        scanResult = result.getText();
//        createTable("" + scanResult);

        requestScan(scanResult);
    }

    private void requestScan(String hasil_scan) {
        loading = ProgressDialog.show(scan.this, null, "Harap Tunggu...", true, false);
        mApiService.scanRequest(hasil_scan)
                .enqueue(new Callback<ResponseBody>() {
                    @Override
                    public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
                        if (response.isSuccessful()) {
                            loading.dismiss();
                            try {
                                JSONObject jsonRESULTS = new JSONObject(response.body().string());
                                if (jsonRESULTS.getString("error").equals("false")) {
                                    String success_msg = jsonRESULTS.getString("error_msg");
                                    Toast.makeText(mContext, success_msg, Toast.LENGTH_SHORT).show();
                                    String id_pesan = jsonRESULTS.getJSONObject("id_pesan").getString("id_pesan");
									Intent pindahActivity = new Intent(scan.this, activity_tujuan.class);
									startActivity(pindahActivity);
                                } else {
                                    // Jika login gagal
                                    String error_message = jsonRESULTS.getString("error_msg");
                                    Toast.makeText(mContext, error_message, Toast.LENGTH_SHORT).show();
                                }
                            } catch (JSONException e) {
                                e.printStackTrace();
                            } catch (IOException e) {
                                e.printStackTrace();
                            }
                        } else {
                            loading.dismiss();
                        }
                    }

                    @Override
                    public void onFailure(Call<ResponseBody> call, Throwable t) {
                        Log.e("debug", "onFailure: ERROR > " + t.toString());
                        loading.dismiss();
                    }
                });
    }
}