I need immediate support pleaseee!!!!!

[Aladdin Hammodi]

hello,

im creating an app and im new with kivy 

my app is consisting of several screens and i want in each screen to write a few lines and have a button "Next" so when i press on it i move to next screen 

i did this 

<ScreenOne>:

    BoxLayout:

        Button:

            text: "Next"

            pos_hint: {"right":1,"bottom":1}

            font_size: 32

            color: 0, 0, 0, 1

            size: 50, 30

                

            on_press:  root.manager.current = 'screen_two'

first my button is not at the lower right corner 

and what should i do in order to add the few lines 

id i want to add a screen background should i just write

canvas:

source: "backgrond.png" # the name of the file

thx a lot 

[Ivan Acevedo]

You must create a button for each screen, each button will take to the next screen

[Leonardo Rodriguez]

The button is not in the lower right corner because you have a BoxLayout and there is only one Widget in it. Try FloatLayout.

I don't understand what you mean with the few lines.

To set a background image try this:

BoxLayout:

    canvas.before:

        Rectangle:

            size: self.size

            pos: self.pos

            source: "background.jpg"

    Button: (and so on)

El miércoles, 14 de junio de 2017, 6:24:41 (UTC-3), Aladdin Hammodi escribió:

[Leonardo Rodriguez]

One more thing.

Another reason because you have a big button in your BoxLayout is because you used the size: 50,50 thinking that kivy is gonna take it. Kivy will ignore this because you should first do size_hint:None,None in order to Kivy take note about your size property.

Best Regards

Leo

[Aladdin Hammodi]

thx a lot 
i wrote my code i n a different way now and i dont have any more errors but when i run my code i only got a black kivy screen and it fits my whole laptop screen 
this is my new code 

my purpose is to have a few screens, setup a background to the screen put a few lines and a next button to go to the other screen 
python file:
=====================

# File name FaceRecognition.py

import kivy

from kivy.app import App

from kivy.uix.floatlayout import FloatLayout

from kivy.uix.screenmanager import ScreenManager, Screen

# Define each screen

class ScreenOne(Screen):

    pass

class ScreenTwo(Screen):

    pass

class ScreenManagement(ScreenManager):

    pass

class FaceRecognitionApp(App):

    def build(self):

        return ScreenManagement()

if __name__=="__main__":

    FaceRecognitionApp().run()

     

============================

kv file :

===========================

# File name FaceRecognition.kv

#: kivy 1.9.1

ScreenManagement:

id: screen_management

ScreenOne:

ScreenTwo:

<MyButton@Button>:

color: .8,.9,0,1 # yellow color

font_size: 32 # font size

size_hint: .2,.1

<ScreenOne>:

name: "screen1"

id: screen_one

FloatLayout:

Label:

text:"Hello\n Welcome to my App\n"

font_size:40 

color: 0,0,0,1

MyButton:

text: 'Next'

pos_hint:{'right':1, 'y':0}

on_press:root.manager.current="screen2"

<ScreenOne>:

name: "screen2"

id: screen_two

FloatLayout:

Label:

text:"Please insert your Name\n Please insert your Password\n"

font_size:40 

color: 0,0,0,1

MyButton:

text: 'Next'

pos_hint:{'right':1, 'y':0}

on_press:root.manager.current="screen1"

==================

[ZenCODE]

You have tow rules in your kv for ScreenOne. The second should probably be ScreenTwo?

And you don't need the FloatLayouts inside the screens because they effective are FloatLayouts (RelativeLayouts to be exact). Hope that helps?

[surmen]

had similar prob
Did u try
from kivy.lang import Builder


Builder.load_file( FaceRecognition.kv)

Also, u mistyped ScreenOne twice in ur kv file