How To Get Value Of Textinput With Kivy

I'm new to Kivy and as i'm not able to practice on PySide (some dynamic libraries broken or i don't know what) i want to try this huge tool. I'm lost right now, i tried to do like

Solution 1:

ajouter method is a member of ProduitScreen not Button so you should use root to refer to it:

Button:
        text: 'Ajouter'
        on_press: root.ajouter()

Also fix issues on your definition of ajouter:

classProduitScreen(Screen):
    defajouter(self):
        print"%s au prix de %f a ete ajoute" % (self.nom.text , float(self.prix.text))

In order to use nom and prix inside your python code, add this to kv code:

<ProduitScreen>:nom:nomprix:prix