serversetup.py

from kivy.lang import Builder
from kivy.uix.screenmanager import Screen

Builder.load_string('''
<Setup>:
	name:'setup'
	BoxLayout:
		orientation:'vertical'
		Widget:
		MDLabel:
			text: ' Server Connection Setup'
			font_style:'H4'
			adaptive_height:True 
			halign:'center'
		Widget:
		MDTextField:
			id:host
			hint_text:'Host'
			size_hint_x:.8
			pos_hint:{'center_x':.5}
		MDTextField:
			id:port
			hint_text:'Port'
			size_hint_x:.8
			pos_hint:{'center_x':.5}
		MDLabel:
			theme_text_color:'Custom'
			text_color:1,0,0,1
			id:error
			adaptive_height:True
			halign:'center'
		Widget:

		BoxLayout:
			size_hint_y:None
			height:dp(50)
			Widget:
			Button:
				text:'Exit'
				background_color:1,0,0,1
				on_release:app.exit()
			Widget:
			Button:
				text:'Create Server'
				background_color:0,1,0,1
				on_release:app.setupServer()
			Widget:
		Widget:



''')
class Setup(Screen):
	pass

if __name__ == '__main__':
	from kivymd.app import MDApp
	class SetupApp(MDApp):
		def build(self):
			return Setup()

	SetupApp().run()