python - Kivy (Python) 程序在 Raspberry Pi 上崩溃 (crashlog)

Question

我最近按照 Kivy 网站上的说明在 Raspberry Pi(带有 Raspbian 系统)上安装了 Kivy。

我打算测试我编写的程序。它在我的 Linux Mint 计算机上运行良好。然而，在 Raspbian 上，它因链接到 Kivy 自己的函数之一的奇怪错误而崩溃。

这是终端输出:

$ python main.py
[INFO   ] [Logger      ] Record log in /home/pi/.kivy/logs/kivy_15-01-10_6.txt
[INFO   ] Kivy v1.9.0-dev
[INFO   ] [Python      ] v2.7.3 (default, Mar 18 2014, 05:13:23) 
[GCC 4.6.3]
[INFO   ] [Factory     ] 173 symbols loaded
[INFO   ] [Image       ] Providers: img_tex, img_dds, img_gif, img_pygame (img_pil, img_ffpyplayer ignored)
[INFO   ] [Window      ] Provider: egl_rpi
[INFO   ] [GL          ] OpenGL version <OpenGL ES 2.0>
[INFO   ] [GL          ] OpenGL vendor <Broadcom>
[INFO   ] [GL          ] OpenGL renderer <VideoCore IV HW>
[INFO   ] [GL          ] OpenGL parsed version: 2, 0
[INFO   ] [GL          ] Shading version <OpenGL ES GLSL ES 1.00>
[INFO   ] [GL          ] Texture max size <2048>
[INFO   ] [GL          ] Texture max units <8>
[INFO   ] [Shader      ] fragment shader: <Compiled>
[INFO   ] [Shader      ] vertex shader: <Compiled>
[INFO   ] [Window      ] virtual keyboard not allowed, single mode, not docked
[INFO   ] [GL          ] NPOT texture support is available
[INFO   ] [OSC         ] using <multiprocessing> for socket
[INFO   ] [ProbeSysfs  ] device match: /dev/input/event0
[INFO   ] [HIDInput    ] Read event from </dev/input/event0>
[INFO   ] [ProbeSysfs  ] device match: /dev/input/event1
[INFO   ] [HIDInput    ] Read event from </dev/input/event1>
[INFO   ] [ProbeSysfs  ] device match: /dev/input/event2
[INFO   ] [HIDInput    ] Read event from </dev/input/event2>
[INFO   ] [Base        ] Start application main loop
[INFO   ] [HIDMotionEvent] using <CHESEN USB Keyboard>
[INFO   ] [HIDMotionEvent] using <CHESEN USB Keyboard>
[INFO   ] [HIDMotionEvent] using <PixArt USB Optical Mouse>
[INFO   ] [Base        ] Leaving application in progress...
 Traceback (most recent call last):
   File "main.py", line 145, in <module>
     MainApp().run()
   File "/usr/local/lib/python2.7/dist-packages/kivy/app.py", line 825, in run
     runTouchApp()
   File "/usr/local/lib/python2.7/dist-packages/kivy/base.py", line 484, in runTouchApp
     EventLoop.window.mainloop()
   File "/usr/local/lib/python2.7/dist-packages/kivy/core/window/window_egl_rpi.py", line 77, in mainloop
     self._mainloop()
   File "/usr/local/lib/python2.7/dist-packages/kivy/core/window/window_egl_rpi.py", line 72, in _mainloop
     EventLoop.idle()
   File "/usr/local/lib/python2.7/dist-packages/kivy/base.py", line 324, in idle
     Clock.tick()
   File "/usr/local/lib/python2.7/dist-packages/kivy/clock.py", line 483, in tick
     self._process_events()
   File "/usr/local/lib/python2.7/dist-packages/kivy/clock.py", line 615, in _process_events
     event.tick(self._last_tick, remove)
   File "/usr/local/lib/python2.7/dist-packages/kivy/clock.py", line 374, in tick
     ret = callback(self._dt)
 TypeError: create_window() takes exactly 1 argument (2 given)

就像一个疯狂的猜测，为了看看它是如何工作的，我尝试编辑 Kivy 的“create_window()”函数，它位于“/usr/local/lib/python2.7/dist-packages/kivy/core/window/window_egl_rpi.py”，通过在其声明中添加可选参数。再次运行我的程序反而产生了某种段错误，所以我不再乱搞 Kivy 的代码...

知道如何修复此日志中提示的错误吗？ (MainApp().run() 是我程序的最开始，其他一切都是 Kivy 函数，显然是由这个命令自动调用的)

Answer 1

我在相同的情况下遇到了相同的错误 - 我的程序在 Windows 机器上运行良好，但在 RPi 上崩溃并出现相同的错误。就我而言，我运行的是更新的 Python 版本 - 2.7.9。

Window.size 分配似乎是崩溃的根源:

class MainApp(App):
  def build(self):
    Window.size = (1280,800)     # <---- Crashes on RPi

删除此分配修复了程序。