kived

import kivy
kivy.require('1.8.1')

from kivy.app import App
from kivy.lang import Builder

root = Builder.load_string('''
<Button>:
    size_hint_y: None
    height: sp(64)

kived

<BackgroundLabel>:
    background_color: 0, 0, 0, 0
    canvas.before:
        Color:
            rgba: self.background_color
        Rectangle:
            pos: self.pos
            size: self.size

kived

def func(which, *args):
    def a(): pass
    def b(): pass
    def c(): pass
    return locals()[which](*args)

kived

from kivy.app import App
from kivy.lang import Builder

root = Builder.load_string('''
#:import WipeTransition kivy.uix.screenmanager.WipeTransition
ScreenManager:
    transition: WipeTransition(clearcolor=(1, 1, 1, 1))
    Screen:
        name: 's1'
        Button:

kived

from kivy.app import App
from kivy.lang import Builder

from jnius import autoclass

PythonActivity = autoclass('org.renpy.android.PythonActivity')
Intent = autoclass('android.content.Intent')
String = autoclass('java.lang.String')

root = Builder.load_string('''

kived

from kivy.app import App
from kivy.properties import StringProperty

class TestApp(App):
    appabc = StringProperty('')

    def build(self):
        self.bind(appabc=self.root.setter('abc'))
        self.appabc = 'hello'

kived

diff --git a/kivy/app.py b/kivy/app.py
index db7e37c..f25c341 100644
--- a/kivy/app.py
+++ b/kivy/app.py
@@ -803,8 +803,6 @@ class App(EventDispatcher):
             if not isinstance(self.root, Widget):
                 Logger.critical('App.root must be an _instance_ of Widget')
                 raise Exception('Invalid instance in App.root')
-            from kivy.core.window import Window
-            Window.add_widget(self.root)

kived

#:import F kivy.factory.Factory

<TestView@ModalView>:
    size_hint: .5, .5
    ScrollView:
        size_hint: .9, .9
        pos_hint: {'center': (.5, .5)}
        GridLayout:
            cols: 10
            size_hint_y: None

kived

import kivy
kivy.require('1.8.1')

from kivy.app import App
from kivy.lang import Builder
from kivy.clock import Clock

root = Builder.load_string('''
#:import Clock kivy.clock.Clock
FloatLayout:

kived

#import pydevd; pydevd.settrace('localhost', port=51514, suspend=False)

import sys
orientation = 'lr-tb'
if 'vertical' in sys.argv:
    sys.argv.remove('vertical')
    orientation = 'tb-lr'

from kivy.app import App
from kivy.uix.button import Button