Android studio ve java kullanılarak ArrayList ile ListView kullanımı anlatılmaktadır.
Uygulama: 2 Activity'den oluşan uygulamada 1.activity'de veri ekleme ve listview de listeleme yapılmaktadır. Listview deki veriye tıklanarak 2.activitye geçilebilir.
Main.Xml
Dosyası
<?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:id="@+id/main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="20dp"
tools:context=".MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<EditText
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_weight="1"
android:ems="10"
android:hint="İsim Gir"
android:inputType="text" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Ekle" />
</LinearLayout>
<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
Main.Java
Dosyası
public class MainActivity extends AppCompatActivity {
Button btnEkle; EditText etAd; ListView lvisimler;
ArrayList<String> isimListesi = new ArrayList<>();
ArrayAdapter<String> adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
EdgeToEdge.enable(this);
setContentView(R.layout.activity_main);
ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
return insets;
});
btnEkle = findViewById(R.id.button1);
etAd = findViewById(R.id.editText1);
lvisimler = findViewById(R.id.listView1);
adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, isimListesi);
lvisimler.setAdapter(adapter);
btnEkle.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String ad = etAd.getText().toString();
isimListesi.add(ad);
adapter.notifyDataSetChanged();
etAd.getText().clear();
}
});
lvisimler.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent detaySayfasi = new Intent(getApplication(), Detay.class);
detaySayfasi.putExtra("isim", isimListesi.get(position));
startActivity(detaySayfasi);
}
});
lvisimler.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
isimListesi.remove(position);
adapter.notifyDataSetChanged();
return false;
}
});
} // oncreate
}//main
Detay.Xml
Dosyası
<?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:id="@+id/main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
android:orientation="vertical"
android:padding="20dp"
tools:context=".Detay">
<TextView
android:id="@+id/textView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:layout_marginBottom="20dp"
android:gravity="center"
android:text="Sonuç Alanı"
android:textSize="30sp" />
<Button
android:id="@+id/button2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Geri Dön" />
</LinearLayout>
Detay.Java
Dosyası
public class Detay extends AppCompatActivity {
TextView metin; Button btnGeri;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
EdgeToEdge.enable(this);
setContentView(R.layout.activity_detay);
ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
return insets;
});
metin = findViewById(R.id.textView2);
btnGeri = findViewById(R.id.button2);
Intent anasayfa = getIntent();
String isim = anasayfa.getStringExtra("isim");
metin.setText(isim);
btnGeri.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent geri = new Intent(getApplication(), MainActivity.class);
startActivity(geri);
}
});
} // oncreate
}//detay