需要添加两个微调器的值并在编辑文本中填充

Question

I am having a hard time getting a spinner to populate a value. I have two spinners, each have multiple items to choose from. They need to be added together and populate in a edit text box.

I also have a discount % edit text where the user will enter a discount. The total of the two spinners needs to be discount by the amount entered in this box.

Could anyone help me with this. I am currently not at my computer that I am programming with so I can not paste the code i currently have but for this example could you just use, spinner "A", spinner "B", Edit text "cost", Edit text "discount"

Thanks for your help.

Answer 1

what exactly is the problem? can you not get the selected spinner values?

pls see the spinner example here as well as the documentation here . especially look for setOnItemSelectedListener().

Answer 2

Try something along the lines of this:

int subtotal = Integer.parseInt((String) spinnerA.getSelectedItem()) * Integer.parseInt((String) spinnerB.getSelectedItem());
double discount = Double.parseDouble(discountEditText.getText().toString()) / 100;

double total = subtotal * (1.0 - discount);

(This assumes that you have ensured the discount field is a valid Double and expects an input like 10 %.)