Kivy 不工作（错误：无法找到任何有价值的 Window 提供程序。）

Question

I have been getting this error: Unable to find any valuable Window provider. With kivy heres the "full" error:

[INFO   ] [Logger      ] Record log in C:\Users\Victor\.kivy\logs\kivy_17-
05-27_10.txt
[INFO   ] [Kivy        ] v1.10.0
[INFO   ] [Python      ] v3.6.1 (v3.6.1:69c0db5, Mar 21 2017, 17:54:52) [MSC 
v.1900 32 bit (Intel)]
[INFO   ] [Factory     ] 194 symbols loaded
[INFO   ] [Image       ] Providers: img_tex, img_dds, img_pil, img_gif 
(img_sdl2, img_ffpyplayer ignored)
[INFO   ] [Text        ] Provider: pil(['text_sdl2'] ignored)
[CRITICAL] [Window      ] Unable to find any valuable Window provider.
sdl2 - ImportError: DLL load failed: The specified module could not be 
found.
File "C:\Users\Victor\Desktop\lib\site-packages\kivy\core\__init__.py", line 
59, in core_select_lib
fromlist=[modulename], level=0)
File "C:\Users\Victor\Desktop\lib\site-
packages\kivy\core\window\window_sdl2.py", line 26, in <module>
from kivy.core.window._window_sdl2 import _WindowSDL2Storage

[CRITICAL] [App         ] Unable to get a Window, abort.
Exception ignored in: 'kivy.properties.dpi2px'
Traceback (most recent call last):
File "C:\Users\Victor\Desktop\lib\site-packages\kivy\utils.py", line 496, in __get__
 retval = self.func(inst)
 File "C:\Users\Victor\Desktop\lib\site-packages\kivy\metrics.py", line 174, in dpi
 EventLoop.ensure_window()
 File "C:\Users\Victor\Desktop\lib\site-packages\kivy\base.py", line 127, in ensure_window
 sys.exit(1)
 SystemExit: 1
[CRITICAL] [App         ] Unable to get a Window, abort.

thats the error and heres the code:

import kivy #added this just in case
from kivy.app import App
from kivy.uix.label import Label


class SimpleKivy(App):
    def build(self):
       return Label(text="Hello World!!!")

if __name__ == "__main__":
   SimpleKivy().run()

Can someone explain this error

Answer 1

You're probably missing some dependencies. From the docs :

Install the dependencies (skip gstreamer (~120MB) if not needed, see Kivy's dependencies):

python -m pip install docutils pygments pypiwin32 kivy.deps.sdl2 kivy.deps.glew;

python -m pip install kivy.deps.gstreamer

To install these dependencies, open up a terminal (can be a console, Pycharm Terminal window, etc.), run the first command and then the second command.

Answer 2

The solution above did not work for me. Here is what I had to do to solve the problem on my Windows 10 pc with Anaconda Python 3.6 installed:

• open an Anaconda prompt window as administrator
• pip uninstall kivy
• pip install kivy
• pip install docutils pygments pypiwin32 kivy.deps.sdl2
• pip install kivy.deps.glew

Answer 3

Even i have faced same problem.

Now it is working with conda install

conda config --add channels conda-forge
conda install kivy

Answer 4

I had the same problem. I tried many suggested solutions in vain. It only worked when I uninstalled and reinstalled kivy.

To uninstall:

    $ pip uninstall kivy

To install:

    $ python -m pip install kivy==2.0.0rc1

Answer 5

If you are working in a virtual environment make sure that you enable the virtual environment first.in windows cmd do this

virtual_environment_folder_name\Scripts\activate

then run your .py file with python

python file_name.py

Answer 6

尝试在虚拟软件（又名 vmbox、vmware）的（>>显示>>设置）中禁用 3D 和 2D 视频加速加速。