text: from kivy.app import App
  from kivy.lang import Builder
  from kivy.properties import StringProperty, ObjectProperty
  from kivy.uix.floatlayout import FloatLayout
  from kivy.uix.anchorlayout import AnchorLayout
  
  Builder.load_string("""
  <Boxes>:
      AnchorLayout:
          anchor_x: 'center'
          anchor_y: 'top'
          size_hint: 1, .9
          BoxLayout: 
              orientation: 'vertical'
              padding: 10
  
              BoxLayout:
                  padding: 10
                  orientation: 'horizontal'
                  textinputtext1: txt1.text
                  textinputtext2: txt2.text
                  textinputtext3: txt3.text
                  
                  Button:
                      size_hint: 0.5,0.5
                      on_press: root.print_txt()
                      text:'Set velocities'
                  TextInput:
                      font_size: 40
                      id: txt1
                      text: root.textinputtext1
                      
                  Button:
                      on_press: root.print_txt()
                      text:'Set samples'
                  TextInput:
                      id: txt2
                      text: root.textinputtext2  
                       
                  Button:
                      on_press: root.print_txt()
                      text:'Set pause'
                  TextInput:
                      id: txt3
                      text: root.textinputtext3
        
              BoxLayout:
                  orientation: 'horizontal'
                  Button:
                      text: "2"
                  Button:
                      text: "3"
                  Button:
                      text: "4"
              BoxLayout:
                  orientation: 'horizontal'
                  Button:
                      text: "5"
                  Button:
                      text: "6"
              BoxLayout:
                  orientation: 'horizontal'
                  Button:
                      text: "7"
                  Button:
                      text: "8"
                  Button:
                      text: "9"
                  Button:
                      text: "10"
      AnchorLayout:
          anchor_x: 'center'
          anchor_y: 'bottom'
          BoxLayout:
              orientation: 'horizontal'
              size_hint: 1, .1
              Button:
                  text: 'Go to Screen 1'
                  on_press: _screen_manager.current = 'screen1'
              Button:
                  text: 'Go to Screen 1'
                  on_press: _screen_manager.current = 'screen1'    
              Button:
                  text: 'Go to Screen 1'
                  on_press: _screen_manager.current = 'screen1'       
              Button:
                  text: 'Go to Screen 2'
                  on_press: _screen_manager.current = 'screen2'""")
  
  
  class Boxes(FloatLayout):
      textinputtext1 = StringProperty()
      textinputtext2 = StringProperty()
      textinputtext3 = StringProperty()
  
      def __init__(self, **kwargs):
          super(Boxes, self).__init__(**kwargs)
          self.textinputtext1 = 'palim'
          self.textinputtext2 = '5'
          self.textinputtext3 = '20'
  
      def print_txt(self):
          print(self.textinputtext1)
          print(self.textinputtext2)
          print(self.textinputtext3)
  
  
  class TestApp(App):
      def build(self):
          return Boxes()
  
  
  if __name__ == '__main__':
      TestApp().run()
  