How can i save each line in shared preferences instead of the last line?

I have this list of countries

> Vatican City
>
> China
>
> Italy
>
> Iran
>
> S. Korea
>
> Spain
>
> Germany
>
> France

i save this list in shared preferences then call it to put it in listview,

the problem is, it got only the last item, so France will saved last and it will be the only one in the listView

How can i solve that? i know with loop, but i'm not good at it

Any help with codes will be appreciated !

Try this code:

MainActivity.java

import android.arch.lifecycle.AndroidViewModel; 
import android.graphics.Color; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.widget.ArrayAdapter; 
import android.widget.AutoCompleteTextView; 

public class MainActivity extends AppCompatActivity { 

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

		// By ID get the AutoCompleteTextView 
		// which id is assign in xml file 
		AutoCompleteTextView 
			autoCompleteTextView 
			= (AutoCompleteTextView) 
				findViewById( 
					R.id.autocompleteTextView); 

		// Create the string array 
		// and store the values. 
		String[] colors 
			= { "Red", "Green", "Black", 
				"Orange", "Blue", "Pink", 
				"Blush", "Brown", "Yellow" }; 

		// Create the object of ArrayAdapter with String 
		// which hold the data as the list item. 
		ArrayAdapter<String> adapter 
			= new ArrayAdapter<String>( 
				this, 
				android.R.layout.select_dialog_item, 
				colors); 

		// Give the suggestion after 1 words. 
		autoCompleteTextView.setThreshold(1); 

		// Set the adapter for data as a list 
		autoCompleteTextView.setAdapter(adapter); 
		autoCompleteTextView.setTextColor(Color.BLACK); 
	} 
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout
	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"> 

	<TextView
		android:layout_width="wrap_content"
		android:layout_height="wrap_content"
		android:layout_marginTop="12dp"
		android:layout_marginLeft="80dp"
		android:text="Write the color name !"
		android:textSize="20dp"
		android:textStyle="bold" /> 

	<AutoCompleteTextView

		android:id="@+id/autocompleteTextView"
		android:layout_width="200dp"
		android:layout_height="wrap_content"
		android:layout_marginTop="120dp"
		android:layout_marginLeft="90dp"
		/> 

</RelativeLayout> 

See here for more details: https://www.geeksforgeeks.org/android-auto-complete-textbox-and-how-to-create-it/

If you want to get data which are saved in shared preferences use this code:

val j=adapter.count
            var i=0
            while (i<j){
            Log.d("abc",adapter.getItem(i))
            i++}