DetailActivity.java

package camp.dev.pesananapps;

import androidx.appcompat.app.AppCompatActivity;

import android.annotation.SuppressLint;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

public class DetailActivity extends AppCompatActivity {

    private LinearLayout linearLayout;
    private ImageView imageview;


    Button btnsend;


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

        final CheckBox tahu = (CheckBox) findViewById( R.id.tahu );
        final CheckBox tempe = (CheckBox) findViewById( R.id.tempe );
        final CheckBox ati = (CheckBox) findViewById( R.id.sate_ati );
        final CheckBox usus = (CheckBox) findViewById( R.id.sate_usus );
        final CheckBox kepala = (CheckBox) findViewById( R.id.kepala );
        final CheckBox ceker = (CheckBox) findViewById( R.id.ceker );


        final TextView hrg = (TextView) findViewById( R.id.harga_makanan );
        String price = getIntent().getExtras().getString( "price" );
        hrg.setText(price);

        final TextView hasil = (TextView) findViewById( R.id.total );

        final TextView txtMakanan = (TextView)findViewById( R.id.nama_makanan );
        String info = getIntent().getExtras().getString( "info" );
        txtMakanan.setText( info );

        final EditText edtNama = (EditText)findViewById( R.id.edtNama );
        final EditText edtJumlah = (EditText)findViewById( R.id.edtJumlah );
        final EditText edtKet = (EditText)findViewById( R.id.edtKet );
        final EditText edtAlamat = (EditText)findViewById( R.id.edtAlamat );
        final EditText edtPmbyaran = (EditText)findViewById( R.id.edtPembayaran );
        final EditText edtTahu = (EditText)findViewById( R.id.edtTahu );
        final EditText edtTempe = (EditText)findViewById( R.id.edtTempe );
        final EditText edtAti = (EditText)findViewById( R.id.edtAti );
        final EditText edtUsus = (EditText)findViewById( R.id.edtUsus );
        final EditText edtKepla = (EditText)findViewById( R.id.edtKepala );
        final EditText edtCker = (EditText)findViewById( R.id.edtCeker );

        final int harga_tahu = 2000;
        final int harga_tempe = 2000;
        final int harga_ati = 2500;
        final int harga_usus = 2500;
        final int harga_kepala = 2000;
        final int harga_ceker = 1000;
        final int harga_ayam = 10000;
        final int harga_ekor = 45000;

        btnsend = findViewById( R.id.btnbuy );
        btnsend.setOnClickListener( new View.OnClickListener() {
            @Override
            public void onClick(View v) {
        /*
                String pesan1 = edtNama.getText().toString();
                String pesan2 = edtJumlah.getText().toString();
                String pesan3 = edtKet.getText().toString();
                String pesan4 = edtAlamat.getText().toString();
                String pesan5 = edtPmbyaran.getText().toString();

                String pesan6 = edtTahu.getText().toString();
                String pesan7 = edtTempe.getText().toString();
                String pesan8 = edtAti.getText().toString();
                String pesan9 = edtUsus.getText().toString();
                String pesan10 = edtKepla.getText().toString();
                String pesan11 = edtCker.getText().toString();

                String pesan12 = txtMakanan.getText().toString();
                String pesan13 = hasil.getText().toString();

         */

                String sumOrder = "";
                int toOrder = 0 ;

                int cal = 0;
                String hsl = hasil.getText().toString();
                if (tahu.isChecked()){
                    int jumlah  = Integer.parseInt( String.valueOf( edtTahu.getText().toString() ) );
                    cal = jumlah*harga_tahu;
                    toOrder += cal;
                }

                if (tempe.isChecked()){
                    int jumlah  = Integer.parseInt( String.valueOf( edtTempe.getText().toString() ) );
                    cal = jumlah*harga_tempe;
                    toOrder += cal;
                }

                if (ati.isChecked()){
                    int jumlah  = Integer.parseInt( String.valueOf( edtAti.getText().toString() ) );
                    cal = jumlah*harga_ati;
                    toOrder += cal;
                }

                if (usus.isChecked()){
                    int jumlah  = Integer.parseInt( String.valueOf( edtUsus.getText().toString() ) );
                    cal = jumlah*harga_usus;
                    toOrder += cal;
                }

                if (kepala.isChecked()){
                    int jumlah  = Integer.parseInt( String.valueOf( edtKepla.getText().toString() ) );
                     cal = jumlah*harga_kepala;
                    toOrder += cal;
                }

                if (ceker.isChecked()){
                    int jumlah  = Integer.parseInt( String.valueOf( edtCker.getText().toString() ) );
                    cal = jumlah*harga_ceker;
                    toOrder += cal;
                }

              int hasil = Integer.valueOf( hrg.getText().toString()+toOrder );
              /*
                sendMail(pesan1, pesan2, pesan3, pesan4, pesan5, pesan6, pesan7, pesan8, pesan9, pesan10, pesan11, pesan12, pesan13);


               */
            }
        } );
    }
/*
    private void sendMail(String pesan1 , String pesan2 , String pesan3 , String pesan4 , String pesan5 , String pesan6 , String pesan7 , String pesan8 , String pesan9 , String pesan10 , String pesan11, String pesan12, String pesan13) {

        String semuapesanan = "Nama Makanan : " + pesan12+ " \n" +
                "Nama Pemesan : " + pesan1 + " \n" +
                "Jumlah Pesanan : " + pesan2 + " \n" +
                "Keterangan Pesanan : " + pesan3 + " \n" + "Menu Tambahan : " + "\n " +
                "Tahu : " + pesan4 + " \n" +
                "Tempe : " + pesan5 + " \n" +
                "Sate Ati Ampela : " + pesan6 + " \n" +
                "Sate Usus : " + pesan7 + " \n" +
                "Kepala Ayam : " + pesan8 + " \n" +
                "Ceker Ayam : " + pesan9 + " \n" +
                "Alamat Pemesan : " + pesan10 + " \n" +
                "Metode Pembayaran : " + pesan11 + " \n" +
                "Total Bayar : " + pesan13 ;

        Intent kirim = new Intent( Intent.ACTION_SEND );
        kirim.setType( "text/plain" );
        kirim.putExtra( Intent.EXTRA_TEXT , semuapesanan );
        kirim.putExtra( "jid" , "628981152982" + "@s.whatsapp.net" );
        kirim.setPackage( "com.whatsapp" );
        try {
            startActivity( Intent.createChooser( kirim , "Choose an Application" ) );
        } catch (Exception e) {
            Toast.makeText( this , e.getMessage() , Toast.LENGTH_SHORT ).show();
        }
    }

 */
}