cycleuser / kivy-cn

A Chinese Translation of Kivy Programming Guide Based on Kivy 1.9.2 中文翻译Kivy开发文档

kivy-cn's Issues

Help my button event is not working

import kivy

from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.label import Label
from kivy.uix.floatlayout import FloatLayout

class layout(FloatLayout):
def init (self, **kwargs):
super(). init(**kwargs)

    b1 = Button(
    text = 'press me',
    pos_hint ={'x': 0.2 , 'y': 0.1},
    size_hint = (0.2, 0.1),
    )
    b1.bind(on_pressed =self.pressed)
    
    
    l1= Label(
    text = 'i am a label',
    color =(1,0,0,1)
    )
    self.add_widget(b1)
    self.add_widget(l1)
    
    
        
def pressed(self, elem):
    b1.text ='hiiiii'

class myApp(App):
def build(self):
return layout()

myApp().run()

建议放到Gitbook上

建议放到Gitbook上，章节阅读起来方便很多

My button on pressed not working I'm new in kivy and in the code when press the button it's does nothing. I have defined the on pressed function. I'm using pydroid 3 on Android Code is below

import kivy
from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.label import Label
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.textinput import TextInput

class my_layout(BoxLayout):
def init (self, **kwargs):
super(). init (**kwargs)
self.rows=2

   self.tb = TextInput(
   text =''
   )
   
    self.add_widget(Label(text= 'hiii'))
    self.add_widget(Label(text= 'hiii'))
    
    self.bt1= Button(
    text= 'press me!'
    )
    self.bt1.bind(on_pressed = self.create)
    self.add_widget(self.bt1)

def create(self, instance):
    self.lbl =Label (text = 'i am label')
    self.add_widget(self.lbl)
    self.remove_widget(self.bt1)

class myApp(App):
def build(self):
return my_layout()

if True:
myApp().run()