datasiswa

Detail Activy
package com.fero.datasiswa_01;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import io.realm.Realm;
import io.realm.RealmConfiguration;

public class DetailActivity extends AppCompatActivity implements View.OnClickListener {
    EditText etNis, etNama, etEmail, etNotel, etAlamat;
    String nis, nama, email, notel, alamat;
    Integer id;
    Button btn_update, btn_hapus, btn_kembali;
    RealmHelper realmHelper;
    Realm realm;

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

        // Set up
        Realm.init(this);
        RealmConfiguration configuration = new RealmConfiguration.Builder().build();
        realm = Realm.getInstance(configuration);
        realmHelper = new RealmHelper(realm);

        // Inisialisasi
        etNis = findViewById(R.id.etNis);
        etNama = findViewById(R.id.etNama);
        etEmail = findViewById(R.id.etEmail);
        etNotel = findViewById(R.id.etNotel);
        etAlamat = findViewById(R.id.etAlamat);

        btn_update = findViewById(R.id.btnUpdate);
        btn_hapus = findViewById(R.id.btnHapus);
        btn_kembali = findViewById(R.id.btnKembali);

        id = Integer.parseInt(getIntent().getStringExtra("id"));
        nis = getIntent().getStringExtra("nis");
        nama = getIntent().getStringExtra("nama");
        email = getIntent().getStringExtra("email");
        notel = getIntent().getStringExtra("notel");
        alamat = getIntent().getStringExtra("alamat");

        etNis.setText(nis);
        etNama.setText(nama);
        etEmail.setText(email);
        etNotel.setText(notel);
        etAlamat.setText(alamat);

        btn_kembali.setOnClickListener(this);
        btn_hapus.setOnClickListener(this);
        btn_update.setOnClickListener(this);

    }
    @Override
    public void onClick(View v) {
        if (v == btn_update){
            realmHelper.update(id, Integer.parseInt(etNis.getText().toString()), etNama.getText().toString());
            Toast.makeText(DetailActivity.this, "Update Success", Toast.LENGTH_SHORT).show();
            etNis.setText("");
            etNama.setText("");
            etEmail.setText("");
            etNotel.setText("");
            etAlamat.setText("");
            finish();
        }else if (v == btn_hapus){
            realmHelper.delete(id);
            Toast.makeText(DetailActivity.this, "Delete Success", Toast.LENGTH_SHORT).show();
            finish();
        }else if (v == btn_kembali){
            startActivity(new Intent(DetailActivity.this, SiswaActivty.class));
            finish();

        } }
}

MainActivty
package com.fero.datasiswa_01;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import io.realm.Realm;
import io.realm.RealmConfiguration;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    Button btnSimpan, btnTampil;
    EditText nis, nama, email, notel, alamat;
    String sNama, sEmail, sAlamat;
    Integer sNis;
    long sNotel;
    Realm realm;
    RealmHelper realmHelper;
    SiswaModel siswaModel;

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

        //inisialisasi
        btnTampil = findViewById(R.id.btnTampil);
        btnSimpan = findViewById(R.id.btnSimpan);
        nis = findViewById(R.id.etNis);
        nama = findViewById(R.id.etNama);
        email = findViewById(R.id.etEmail);
        notel = findViewById(R.id.etNotel);
        alamat = findViewById(R.id.etAlamat);

        //set up realm
        Realm.init(MainActivity.this);
        RealmConfiguration configuration = new RealmConfiguration.Builder().build();
        realm = Realm.getInstance(configuration);

        btnSimpan.setOnClickListener(this);
        btnTampil.setOnClickListener(this);
    }
    @Override
    public void onClick(View v) {
        if (v == btnSimpan){
            if (!nis.getText().toString().isEmpty() && !nama.getText().toString().isEmpty() && !email.getText().toString().isEmpty() && !notel.getText().toString().isEmpty() && !alamat.getText().toString().isEmpty()){
                sNis = Integer.parseInt(nis.getText().toString());
                sNama = nama.getText().toString();
                sEmail = email.getText().toString();
                sNotel = Long.parseLong(notel.getText().toString());
                sAlamat = alamat.getText().toString();

                siswaModel = new SiswaModel();
                siswaModel.setNis(sNis);
                siswaModel.setNama(sNama);
                siswaModel.setEmail(sEmail);
                siswaModel.setNotel(sNotel);
                siswaModel.setAlamat(sAlamat);


                realmHelper = new RealmHelper(realm);
                realmHelper.save(siswaModel);

                Toast.makeText(MainActivity.this, "Data berhasil Disimpan!", Toast.LENGTH_SHORT).show();

                nis.setText("");
                nama.setText("");
                email.setText("");
                notel.setText("");
                alamat.setText("");
            }else {
                Toast.makeText(MainActivity.this, "Terdapat inputan yang kosong!", Toast.LENGTH_SHORT).show();
            }
        }else if (v == btnTampil){
            Intent intent = new Intent(MainActivity.this,SiswaActivty.class);
            startActivity(intent);

        }

    }
}

siswa adapter
package com.fero.datasiswa_01;

import android.annotation.SuppressLint;
import android.content.Context;
import android.content.Intent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.TextView;

import androidx.recyclerview.widget.RecyclerView;

import java.util.List;

public class SiswaAdapter extends RecyclerView.Adapter<SiswaAdapter.MyViewHolder> {
    private List<SiswaModel> modelSiswas;
    Context context;
    public SiswaAdapter(Context context, List<SiswaModel> modelSiswas){
        this.context = context;
        this.modelSiswas = modelSiswas;
    }
    @Override
    public SiswaAdapter.MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType){
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_siswa, parent, false);
        return new MyViewHolder(v);
    }
    @SuppressLint("SetTextI18n")
    @Override
    public void onBindViewHolder(SiswaAdapter.MyViewHolder holder, int position){
        final SiswaModel model = modelSiswas.get(position);
        holder.nis.setText(String.valueOf(model.getNis()));
        holder.nama.setText(model.getNama());
        holder.email.setText(model.getEmail());
        holder.notel.setText(String.valueOf(model.getNotel()));
        holder.alamat.setText(model.getAlamat());
        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(v.getContext(), DetailActivity.class);
                intent.putExtra("id", String.valueOf(model.getId()));
                intent.putExtra("nis", String.valueOf(model.getNis()));
                intent.putExtra("nama", model.getNama());
                intent.putExtra("email", model.getEmail());
                intent.putExtra("notel", String.valueOf(model.getNotel()));
                intent.putExtra("alamat", model.getAlamat());
                v.getContext().startActivity(intent);
            }
        });
    }
    @Override
    public int getItemCount(){
        return modelSiswas.size();
    }
    public class MyViewHolder extends RecyclerView.ViewHolder{
        TextView nis, nama, email, notel, alamat;
        public MyViewHolder(View itemView){
            super(itemView);
            nis = itemView.findViewById(R.id.tvNis);
            nama = itemView.findViewById(R.id.tvNama);
            email = itemView.findViewById(R.id.tvEmail);
            notel = itemView.findViewById(R.id.tvNotel);
            alamat = itemView.findViewById(R.id.tvAlamat);
        } }
}

siswamodel
package com.fero.datasiswa_01;

import io.realm.RealmObject;
import io.realm.annotations.PrimaryKey;

public class SiswaModel extends RealmObject {
    @PrimaryKey
    private Integer id;
    private Integer nis;
    private String nama;
    private String email;
    private long notel;
    private String alamat;


    public void  setId(Integer id){
        this.id = id;
    }

    public int getId(){
        return  id;
    }

    public void setNis(Integer nis){
        this.nis = nis;
    }

    public int getNis(){
        return  nis;
    }

    public  void setNama(String nama){
        this.nama = nama;
    }

    public String getNama(){
        return  nama;
    }

    public void setEmail(String email) {
        this.email = email;
    }
    public String getEmail(){
        return  nama;
    }

    public void setNotel(long notel) {
        this.notel = notel;
    }
    public long getNotel(){
        return  notel;
    }

    public void setAlamat(String alamat) {
        this.alamat = alamat;
    }
    public String getAlamat(){
        return alamat;
    }
}