List View di Android Studio
hello temen2,
yuk kita buat listview di android studio
langkah pertama kita buat main activity...
package com.example.cobalistview;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
private HeroAdapter adapter;
private String[] Nama;
private String[] Deskripsi;
private ArrayList<Hero> heroes;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ListView listView = findViewById(R.id.lv_list);
adapter = new HeroAdapter(this);
listView.setAdapter(adapter);
ambilData();
addItem();
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
Toast.makeText(MainActivity.this, heroes.get(i).getNama(), Toast.LENGTH_LONG).show();
}
});
}
private void addItem() {
heroes = new ArrayList<>();
for (int i = 0; i < Nama.length; i++){
Hero hero = new Hero();
hero.setNama(Nama[i]);
hero.setDeskripsi(Deskripsi[i]);
heroes.add(hero);
}
adapter.setHeroes(heroes);
}
private void ambilData() {
Nama = getResources().getStringArray(R.array.nama);
Deskripsi = getResources().getStringArray(R.array.deskripsi);
}
}
dan jangan lupa kita buat layoutnya...
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<ListView
android:id="@+id/lv_list"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
langkah kedua, kita membuat class pahlawan, karena kita akan membuat daftar nama2 pahlawan indonesia,
package com.example.cobalistview;
class Hero {
private String nama;
private String deskripsi;
public String getNama() {
return nama;
}
public void setNama(String nama) {
this.nama = nama;
}
public String getDeskripsi() {
return deskripsi;
}
public void setDeskripsi(String deskripsi) {
this.deskripsi = deskripsi;
}
}
dan jangan lupa kita buat layoutnya...
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="16dp">
<TextView
android:id="@+id/txt_nama"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:textStyle="bold"
android:text="nama"/>
<TextView
android:id="@+id/txt_deskripsi"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/txt_nama"
android:text="deskripsi"/>
</RelativeLayout>
langkah ketiga, kita meuliskan nama pahlawan dan deskripsinya di dalam folder string
res > string...
<resources>
<string name="app_name">CobaListView</string>
<string-array name="nama">
<item>Soekarno</item>
<item>Ki Hajar Dewantara</item>
<item>Moh Yamin</item>
<item>Pattimura</item>
<item>R.A. Kartini</item>
<item>Cut Nyak Dien</item>
</string-array>
<string-array name="deskripsi">
<item>Pahlawan Kemerdekaan Republik Indonesia sekaligus Menjadi Presiden Pertama Indonesia</item>
<item>Bapak Pendidikan Indonesia Yang Mendirikan Taman Siswa</item>
<item>Pahlawan Perumus Pancasila</item>
<item>Pahlawan Kemerdeaan Negara Indonesia Di Ambon</item>
<item>Pahlawan Perempuan Indonesia</item>
<item>Pahlawan Perempuan Indonesia Di Aceh</item>
</string-array>
</resources>
dan langkah terakhir, kita membuat adapter untuk membuat listview kita,
caranya buat class adapter di folder java...
package com.example.cobalistview;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import androidx.appcompat.view.menu.MenuView;
import java.util.ArrayList;
public class HeroAdapter extends BaseAdapter {
private Context context;
private ArrayList<Hero> heroes = new ArrayList<>();
//setter hasil generate
public void setHeroes(ArrayList<Hero> heroes){
this.heroes = heroes;
}
public HeroAdapter (Context context){
this.context = context;
}
@Override
public int getCount() {
return heroes.size();
}
@Override
public Object getItem(int i) {
return heroes.get(i);
}
@Override
public long getItemId(int i) {
return i;
}
@Override
public View getView(int i, View view, ViewGroup viewGroup){
View itemView = view;
if (itemView == null){
itemView = LayoutInflater.from(context) .inflate(R.layout.item_hero, viewGroup, false);
}
ViewHolder viewHolder = new ViewHolder(itemView);
Hero hero = (Hero) getItem(i);
viewHolder.bind(hero);
return itemView;
}
private class ViewHolder {
private TextView txtNama;
private TextView txtDeskripsi;
ViewHolder (View view){
txtNama = view.findViewById(R.id.txt_nama);
txtDeskripsi = view.findViewById(R.id.txt_deskripsi);
}
public void bind(Hero hero) {
txtNama.setText(hero.getNama());
txtDeskripsi.setText(hero.getDeskripsi());
}
}
}
bila sudah maka akan muncul tampilan seperti dibawah ini,
selamat mencoba....
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