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UI: Refactored Part2 to use RadioButtons and a single Calculate button

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Rapturate
2026-08-28 10:47:01 -04:00
parent b4752dabc7
commit 88e1f88a14
2 changed files with 73 additions and 76 deletions
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app/src/main/java/com/example/assignmentone/MainActivity.java
+16 -30
View File
@@ -4,6 +4,7 @@ import android.annotation.SuppressLint;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.TextView;
import androidx.activity.EdgeToEdge;
@@ -28,12 +29,12 @@ public class MainActivity extends AppCompatActivity {
});
TextInputLayout tempInput = findViewById(R.id.inputLayoutTemp);
Button CtoF = findViewById(R.id.but_cToF);
Button FtoC = findViewById(R.id.but_fToC);
RadioButton radCtoF = findViewById(R.id.radBut_CtoF);
Button calculate = findViewById(R.id.but_calc);
Button reset = findViewById(R.id.but_reset);
TextView result = findViewById(R.id.result);
CtoF.setOnClickListener(new View.OnClickListener(){
calculate.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
@@ -45,33 +46,18 @@ public class MainActivity extends AppCompatActivity {
return;
}
try {
double c = Double.parseDouble(userInput);
double f = c * (9.0/5.0) + 32;
@SuppressLint("DefaultLocale") String resultString = String.format("%.2f °F", f);
result.setText(resultString);
} catch (NumberFormatException e) {
tempInput.setError("Invalid number format");
}
}
});
FtoC.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
tempInput.setError(null);
if (tempInput.getEditText() == null) return;
String userInput = tempInput.getEditText().getText().toString().trim();
if(userInput.isEmpty()) {
tempInput.setError("Please enter a temperature");
return;
}
try {
double f = Double.parseDouble(userInput);
double c = (5.0/9.0)*(f-32);
@SuppressLint("DefaultLocale") String resultString = String.format("%.2f °C", c);
result.setText(resultString);
double inputTemp = Double.parseDouble(userInput);
if (radCtoF.isChecked()) {
// Celsius to Fahrenheit
double f = inputTemp * (9.0/5.0) + 32;
@SuppressLint("DefaultLocale") String resultString = String.format("%.2f °F", f);
result.setText(resultString);
} else {
// Fahrenheit to Celsius
double c = (5.0/9.0) * (inputTemp - 32);
@SuppressLint("DefaultLocale") String resultString = String.format("%.2f °C", c);
result.setText(resultString);
}
} catch (NumberFormatException e) {
tempInput.setError("Invalid number format");
app/src/main/res/layout/activity_main.xml
+57 -46
View File
@@ -7,20 +7,6 @@
android:layout_height="match_parent"
tools:context=".MainActivity">
<Button
android:id="@+id/but_calc"
android:layout_width="153dp"
android:layout_height="39dp"
android:layout_marginStart="32dp"
android:backgroundTint="#A9A7A7"
android:text="Calculate"
android:textColor="#FFFFFF"
app:cornerRadius="0dp"
app:layout_constraintBottom_toBottomOf="@+id/but_reset"
app:layout_constraintStart_toEndOf="@+id/but_reset"
app:layout_constraintTop_toTopOf="@+id/but_reset"
app:layout_constraintVertical_bias="0.0" />
<TextView
android:id="@+id/textView2"
android:layout_width="match_parent"
@@ -88,45 +74,70 @@
app:layout_constraintStart_toEndOf="@+id/text_conversion"
app:layout_constraintTop_toTopOf="@+id/text_conversion" />
<TextView
android:id="@+id/txt_select"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="24dp"
android:text="Select Conversion:"
android:textSize="18sp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/text_conversion" />
<RadioGroup
android:id="@+id/radioGroup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="8dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/txt_select">
<RadioButton
android:id="@+id/radBut_CtoF"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="C to F"
android:checked="true" />
<RadioButton
android:id="@+id/radBut_FtoC"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="F to C" />
</RadioGroup>
<Button
android:id="@+id/but_reset"
android:layout_width="153dp"
android:layout_height="39dp"
android:layout_marginStart="36dp"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="24dp"
android:layout_marginEnd="8dp"
android:backgroundTint="#A9A7A7"
android:text="Reset"
android:textColor="#FFFFFF"
app:cornerRadius="0dp"
app:layout_constraintEnd_toStartOf="@+id/but_calc"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
tools:layout_editor_absoluteY="307dp" />
app:layout_constraintTop_toBottomOf="@+id/radioGroup" />
<RadioButton
android:id="@+id/radBut_CtoF"
style="@style/Widget.Material3.CompoundButton.RadioButton"
android:layout_width="75dp"
android:layout_height="34dp"
android:text="C to F"
tools:layout_editor_absoluteX="26dp"
tools:layout_editor_absoluteY="216dp" />
<RadioButton
android:id="@+id/radBut_FtoC"
style="@style/Widget.Material3.CompoundButton.RadioButton"
android:layout_width="75dp"
android:layout_height="34dp"
android:text="F to C"
app:layout_constraintTop_toBottomOf="@+id/radBut_CtoF"
tools:layout_editor_absoluteX="26dp" />
<TextView
android:id="@+id/txt_select"
android:layout_width="151dp"
android:layout_height="29dp"
android:layout_marginTop="8dp"
android:gravity="bottom"
android:text="Select Conversion:"
android:textSize="15dp"
app:layout_constraintTop_toBottomOf="@+id/text_conversion"
tools:layout_editor_absoluteX="16dp" />
<Button
android:id="@+id/but_calc"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="24dp"
android:layout_marginEnd="16dp"
android:backgroundTint="#A9A7A7"
android:text="Calculate"
android:textColor="#FFFFFF"
app:cornerRadius="0dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/but_reset"
app:layout_constraintTop_toBottomOf="@+id/radioGroup" />
</androidx.constraintlayout.widget.ConstraintLayout>