I am using KivyMD and I am trying to get the text from the text input in kivyMD. I keep getting the following error:
[INFO ] [Logger ] Record log in C:\Users\Gavin\.kivy\logs\kivy_21-06-07_61.txt
[INFO ] [deps ] Successfully imported "kivy_deps.gstreamer" 0.3.2
[INFO ] [deps ] Successfully imported "kivy_deps.angle" 0.3.0
[INFO ] [deps ] Successfully imported "kivy_deps.glew" 0.3.0
[INFO ] [deps ] Successfully imported "kivy_deps.sdl2" 0.3.1
[INFO ] [Kivy ] v2.0.0
[INFO ] [Kivy ] Installed at "C:\Users\Gavin\AppData\Local\Programs\Python\Python39\lib\site-packages\kivy\__init__.py"
[INFO ] [Python ] v3.9.5 (tags/v3.9.5:0a7dcbd, May 3 2021, 17:27:52) [MSC v.1928 64 bit (AMD64)]
[INFO ] [Python ] Interpreter at "C:\Users\Gavin\AppData\Local\Programs\Python\Python39\python.exe"
[INFO ] [KivyMD ] 1.0.0.dev0, git-d99a3d0, 2021-06-07 (installed at "C:\Users\Gavin\AppData\Local\Programs\Python\Python39\lib\site-packages\kivymd\__init__.py")
[INFO ] [Factory ] 186 symbols loaded
[INFO ] [Image ] Providers: img_tex, img_dds, img_sdl2, img_pil (img_ffpyplayer ignored)
[INFO ] [Text ] Provider: sdl2
[INFO ] [Window ] Provider: sdl2
[INFO ] [GL ] Using the "OpenGL" graphics system
[INFO ] [GL ] GLEW initialization succeeded
[INFO ] [GL ] Backend used <glew>
[INFO ] [GL ] OpenGL version <b'4.0.0 - Build 10.18.10.5069'>
[INFO ] [GL ] OpenGL vendor <b'Intel'>
[INFO ] [GL ] OpenGL renderer <b'Intel(R) HD Graphics 4000'>
[INFO ] [GL ] OpenGL parsed version: 4, 0
[INFO ] [GL ] Shading version <b'4.00 - Build 10.18.10.5069'>
[INFO ] [GL ] Texture max size <16384>
[INFO ] [GL ] Texture max units <16>
[INFO ] [Window ] auto add sdl2 input provider
[INFO ] [Window ] virtual keyboard not allowed, single mode, not docked
[INFO ] [GL ] NPOT texture support is available
[INFO ] [Base ] Start application main loop
[INFO ] [Base ] Leaving application in progress...
Traceback (most recent call last):
File "c:\Users\Gavin\Documents\GitHub\Mobile Temperture Convertor\Mobile-Temperature-Convertor\test.py", line 30, in <module>
DemoApp().run()
File "C:\Users\Gavin\AppData\Local\Programs\Python\Python39\lib\site-packages\kivy\app.py", line 950, in run
runTouchApp()
File "C:\Users\Gavin\AppData\Local\Programs\Python\Python39\lib\site-packages\kivy\base.py", line 582, in runTouchApp
EventLoop.mainloop()
File "C:\Users\Gavin\AppData\Local\Programs\Python\Python39\lib\site-packages\kivy\base.py", line 347, in mainloop
self.idle()
File "C:\Users\Gavin\AppData\Local\Programs\Python\Python39\lib\site-packages\kivy\base.py", line 391, in idle
self.dispatch_input()
File "C:\Users\Gavin\AppData\Local\Programs\Python\Python39\lib\site-packages\kivy\base.py", line 342, in dispatch_input
post_dispatch_input(*pop(0))
File "C:\Users\Gavin\AppData\Local\Programs\Python\Python39\lib\site-packages\kivy\base.py", line 308, in post_dispatch_input
wid.dispatch('on_touch_up', me)
File "kivy\_event.pyx", line 709, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Gavin\AppData\Local\Programs\Python\Python39\lib\site-packages\kivymd\uix\behaviors\ripple_behavior.py", line 296, in on_touch_up
return super().on_touch_up(touch)
File "C:\Users\Gavin\AppData\Local\Programs\Python\Python39\lib\site-packages\kivymd\uix\button.py", line 981, in on_touch_up
return super().on_touch_up(touch)
File "C:\Users\Gavin\AppData\Local\Programs\Python\Python39\lib\site-packages\kivy\uix\behaviors\button.py", line 179, in on_touch_up
self.dispatch('on_release')
File "kivy\_event.pyx", line 705, in kivy._event.EventDispatcher.dispatch
File "kivy\_event.pyx", line 1248, in kivy._event.EventObservers.dispatch
File "kivy\_event.pyx", line 1132, in kivy._event.EventObservers._dispatch
File "C:\Users\Gavin\AppData\Local\Programs\Python\Python39\lib\site-packages\kivy\lang\builder.py", line 57, in custom_callback
exec(__kvlang__.co_value, idmap)
File "C:\Users\Gavin\Documents\GitHub\Mobile Temperture Convertor\Mobile-Temperature-Convertor\test.kv", line 19, in <module>
on_release: self.show_data
File "kivy\weakproxy.pyx", line 32, in kivy.weakproxy.WeakProxy.__getattr__
AttributeError: 'MDRoundFlatButton' object has no attribute 'show_data'
Here is the python file:
from kivymd.app import MDApp
from kivymd.uix.screen import Screen
from kivymd.uix.button import MDRectangleFlatButton, MDRoundFlatButton
from kivymd.uix.textfield import MDTextField
from kivy.lang import Builder
class DemoApp(MDApp):
def show_data(self):
inputFahrenheit = self.root.ids.fahrenheit_input.text
print(inputFahrenheit)
def build(self):
kv = Builder.load_file("test.kv")
self.theme_cls.primary_palette = "Green"
self.theme_cls.primary_hue = "A700"
self.theme_cls.theme_style = "Light"
screen = Screen()
return kv
DemoApp().run()
Here is the .kv file:
Screen:
MDTextField:
id: fahrenheit
hint_text:"Enter Fahrenheit"
helper_text: "Once you enter the fahrenheit the press submit"
helper_text_mode: "on_focus"
icon_right: "temperature-fahrenheit"
pos_hint: {'center_x': 0.5, 'center_y': 0.9}
size: 200, 25
size_hint: None, None
MDRoundFlatButton:
text: "Enter"
pos_hint: {'center_x': 0.5, 'center_y': 0.2}
text_color: 0, 1, 0, 1
size_hint: 0.25, 0.20
on_release: self.show_data
Not sure what is going wrong hope I can get help from the community. I have done this before in normal kivy so I don't know whats going on.
EDIT to show the current state the code is in after @John Andersons tried to help but the code did not work.
PYTHON FILE:
from kivymd.app import MDApp
from kivymd.uix.screen import Screen
from kivymd.uix.button import MDRectangleFlatButton, MDRoundFlatButton
from kivymd.uix.textfield import MDTextField
from kivy.lang import Builder
class DemoApp(MDApp):
def show_data(self):
inputFahrenheit = self.root.ids.fahrenheit.text
print(inputFahrenheit)
def build(self):
kv = Builder.load_file("test.kv")
self.theme_cls.primary_palette = "Green"
self.theme_cls.primary_hue = "A700"
self.theme_cls.theme_style = "Light"
screen = Screen()
return kv
DemoApp().run()
KV FILE:
Screen:
MDTextField:
id: fahrenheit
hint_text:"Enter Fahrenheit"
helper_text: "Once you enter the fahrenheit the press submit"
helper_text_mode: "on_focus"
icon_right: "temperature-fahrenheit"
pos_hint: {'center_x': 0.5, 'center_y': 0.9}
size: 200, 25
size_hint: None, None
MDRoundFlatButton:
text: "Enter"
pos_hint: {'center_x': 0.5, 'center_y': 0.2}
text_color: 0, 1, 0, 1
size_hint: 0.25, 0.20
on_release: app.show_data
As the error message states:
'MDRoundFlatButton' object has no attribute 'show_data'
In your kv:
on_release: self.show_data
the self is the MDRoundFlatButton. Since your show_data() method is in your DemoApp, change the kv to use that method:
on_release: app.show_data()
The app is a reference to the DemoApp. Also note that in the kv the () is required.
Your defined id in your kv is fahrenheit, but you are trying to access fahrenheit_input. Swict one so that they match.