How to programmatically hide Android soft keyboard

 <?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:id="@+id/main"

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context=".MainActivity">

 <TextView

android:id="@+id/text_view_result"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center_horizontal"

android:layout_marginTop="32dp"

android:text="Candidroot solutions"

android:textColor="#061E98"

android:textSize="22sp"

android:textStyle="bold"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toTopOf="parent" />

 <EditText

android:id="@+id/edit_text_input"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginTop="76dp"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintHorizontal_bias="1.0"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toBottomOf="@+id/text_view_result" />

 <Button

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center_horizontal"

android:layout_marginTop="124dp"

android:onClick="setText"

android:text="Submit"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toBottomOf="@+id/edit_text_input" />

 </androidx.constraintlayout.widget.ConstraintLayout>

 import android.content.Context;

 import android.os.Bundle;

 import android.view.View;

 import android.view.inputmethod.InputMethodManager;

 import android.widget.EditText;

 import android.widget.TextView;

 import androidx.activity.EdgeToEdge;

 import androidx.appcompat.app.AppCompatActivity;

 public class MainActivity extends AppCompatActivity {

private TextView textViewResult;

private EditText editTextInput;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

EdgeToEdge.enable(this);

setContentView(R.layout.activity_main);

textViewResult

= findViewById(

R.id.text_view_result);

editTextInput

= findViewById(

R.id.edit_text_input);

}

public void setText(View v)

{

String newText

= editTextInput.getText().toString();

textViewResult.setText(newText);

closeKeyboard();

editTextInput.setText("");

}

private void closeKeyboard()

{

// in this layout

View view = this.getCurrentFocus();

// the app from crash

if (view != null) {

// service to InputMethodManager

InputMethodManager manager

= (InputMethodManager)

getSystemService(

Context.INPUT_METHOD_SERVICE);

manager

.hideSoftInputFromWindow(

view.getWindowToken(), 0);

}

}

 }