To Add Data to list and display the entered data on the screen.
Android Studio(Min.required Artic Fox)
Step 1: Open Android Stdio and then click on File -> New -> New project.
Step 2: Then type the Application name and click Next.
Step 3: Then select the Minimum SDK as shown below and click Next.
Step 4: Then select the Empty Activity and click Next. Finally click Finish.
Step 5: Design layout in activity_main.xml.
Step 6: Display message give in MainActivity file.
Step 7: Save and run the application.
<?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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<EditText
android:id="@+id/editTextTextPersonName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="textPersonName"
android:text="items"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.92"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.059" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="add to list"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.839"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/editTextTextPersonName"
app:layout_constraintVertical_bias="0.09" />
<ListView
android:id="@+id/listname"
android:layout_width="409dp"
android:layout_height="478dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/button"
app:layout_constraintVertical_bias="0.483" />
</androidx.constraintlayout.widget.ConstraintLayout>
package com.example.listview;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
ListView listView;
ArrayList<String> list;
Button btnAdd;
EditText editText;
ArrayAdapter<String> arrayAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView) findViewById(R.id.listname);
btnAdd=(Button) findViewById(R.id.button);
editText=(EditText) findViewById(R.id.editTextTextPersonName);
list=new ArrayList<String>();
arrayAdapter =new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_list_item_1,list);
btnAdd.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String names=editText.getText().toString();
list.add(names);
listView.setAdapter(arrayAdapter);
arrayAdapter.notifyDataSetChanged();
}
});
}
}
Thus a Simple Android Application Add Data to list and display the entered data on the screen using Android Studio is developed and executed successfully.