// TempConverter Example -- Method 4 // Pass in lambda function event listener // to convert.setOnClickListener method call package it372.smiths.tempconverter4; import androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; public class MainActivity extends AppCompatActivity { @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; }); Button convert = findViewById(R.id.convert); convert.setOnClickListener( (view) -> { EditText editTxtCel = findViewById(R.id.cel); TextView txtFahr = findViewById(R.id.fahr); int cel = 0; String input = editTxtCel.getText().toString(); try { cel = Integer.parseInt(input); int fahr = 9 * cel / 5 + 32; txtFahr.setText(String.valueOf(fahr)); } catch (NumberFormatException e) { txtFahr.setText("Illegal Input"); } }); } }