MainActivity.java
package com.cfsuman.androidtutorials;
import android.os.Bundle;
import android.app.Activity;
import android.util.TypedValue;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Get the widgets reference from XML layout
ListView listView = findViewById(R.id.listView);
// Initializing a new String Array
String[] fruits = new String[] {
"Abiu",
"Batuan",
"Black Mulberry",
"Cape Gooseberry",
"Desert banana",
"Eastern May Hawthorn",
"Fibrous Satinash",
"Gooseberry"
};
// Create a List from String Array elements
List<String> fruits_list = new ArrayList<String>
(Arrays.asList(fruits));
// Create an ArrayAdapter from List
ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>
(
this,
android.R.layout.simple_list_item_1,
fruits_list
){
@Override
public View getView(
int position, View convertView, ViewGroup parent){
/// Get the Item from ListView
View view = super.getView(position, convertView, parent);
// Get the item text view
TextView textView = (TextView) view
.findViewById(android.R.id.text1);
// Set the text size for ListView each item
textView.setTextSize(
TypedValue.COMPLEX_UNIT_SP,
25
);
// Return the view
return view;
}
};
// DataBind ListView with items from ArrayAdapter
listView.setAdapter(arrayAdapter);
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#DCDCDC"
android:padding="24dp">
<ListView
android:id="@+id/listView"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

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