CODEWITHSUNDEEP
javaandroid
Abimbola
Abimbola

Reputation: 21

Function declaration must have a name

I have strings of codes in my Main.Activity.kt of Android studio but I keep getting the error message "Function declaration must have a name: Unresolved reference"

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

/**
 * This method is called when the order button is clicked.
 */
public void submitOrder(View view) {
    display(2);
    displayPrice(2*5);
}

/**
 * This method displays the given quantity value on the screen.
 */
private void display(int number) {
    TextView quantityTextView = (TextView) findViewById(R.id.quantity_text_view);
    quantityTextView.setText("" + number);
}
}

Upvotes: 2

Views: 4763

Answers (3)

Ostkontentitan
Ostkontentitan

Reputation: 7020

Your file has a .kt extension indicating its kotlin but only contains java code!

Either migrate it to kotlin or use a .java file for it.

Also drop the "." between "Main" and "Activity"

So you either go for:

MainActivity.java containing your java code

OR

MainActivity.kt containing kotlin code (recommended)

Upvotes: 0

Tara
Tara

Reputation: 700

You don't have displayPrice(2*5); function so replace displayPrice(2*5); to display(2*5); otherwise create function with name displayPrice(int number);

Upvotes: 0

Stoica Mircea
Stoica Mircea

Reputation: 782

Replace (but this is not what you want) displayPrice(2*5); with display(2*5); (only to solve the unreferenced error, then you will see the price instead of the quantity). Also to display the price you need create the method :

private void displayPrice(int number) { \\ do price print. }

The methoddisplayPrice is undeclared so that's why bad reference error appears.

Upvotes: 2

Related Questions