java.lang.NumberFormatException: Invalid double: ""?

Question

I'm not sure how to fix this problem. I have a spinner. When a certain choice is selected then whatever is in the text field (number) I want to use that value for a specific method.

In Main:

EditText temp;
temp = (EditText)findViewById(R.id.editText);



public void onItemSelected(AdapterView<?> parent, View view, int position, long id) 
{

String choice = parent.getSelectedItem().toString();
Double value = Double.parseDouble(temp.getText().toString());
}

Everything works fine before I try to convert the temp into a double, it crashes the application. Any help will be appreciated.

I AM NEW TO ANDROID STUDIO.

possible duplicate of [NumberFormatException error (parseInt)](http://stackoverflow.com/questions/5267241/numberformatexception-error-parseint) — Mathemats, Sep 17 '15 at 22:49
I've also tried Double value = new Double(temp.getText().toString()); — Marcella Ruiz, Sep 17 '15 at 22:53

score 0 · Answer 1 · answered Sep 17 '15 at 22:46

0

I think the temp field is empty (hence the ""), which does not parse well as a double.

answered Sep 17 '15 at 22:46

Michael D

678
3
11

I want the user to enter a value in the text field, so do I have to initialize a String to temp in order for it to work? – Marcella Ruiz Sep 17 '15 at 22:49

java.lang.NumberFormatException: Invalid double: ""?

1 Answers1