kivyのmatplotlibグラフに触れる（クリックする）がクラッシュする

Question

kivyでライブデータを表示するための小さなGUIを構築します。

私はこれを行うことによって、私の画面でmatplotlibのグラフを追加しました：

fig, ax = plt.subplots() 
plt.plot([1,2]) 

canvas = fig.canvas 
self.ids.screen.add_widget(canvas, 2) 

をGUIの残りは.kvファイルを使用して設計されています。すべてが正常に動作しますが、私は誤ってこの問題が発生したプロットとなし、さらにタッチに触れた場合は可能です：

[INFO ] [Base  ] Leaving application in progress... 
Traceback (most recent call last): 
    File "main.py", line 167, in <module> 
    TestApp().run() 
    File "/usr/local/lib/python3.4/dist-packages/kivy/app.py", line 828, in run 
    runTouchApp() 
    File "/usr/local/lib/python3.4/dist-packages/kivy/base.py", line 487, in runTouchApp 
    EventLoop.window.mainloop() 
    File "/usr/local/lib/python3.4/dist-packages/kivy/core/window/window_egl_rpi.py", line 89, in mainloop 
    self._mainloop() 
    File "/usr/local/lib/python3.4/dist-packages/kivy/core/window/window_egl_rpi.py", line 84, in _mainloop 
    EventLoop.idle() 
    File "/usr/local/lib/python3.4/dist-packages/kivy/base.py", line 330, in idle 
    self.dispatch_input() 
    File "/usr/local/lib/python3.4/dist-packages/kivy/base.py", line 315, in dispatch_input 
    post_dispatch_input(*pop(0)) 
    File "/usr/local/lib/python3.4/dist-packages/kivy/base.py", line 221, in post_dispatch_input 
    listener.dispatch('on_motion', etype, me) 
    File "kivy/_event.pyx", line 718, in kivy._event.EventDispatcher.dispatch (/tmp/pip-a56bsdeu-build/kivy/_event.c:7726) 
    File "/usr/local/lib/python3.4/dist-packages/kivy/core/window/__init__.py", line 1070, in on_motion 
    self.dispatch('on_touch_down', me) 
    File "kivy/_event.pyx", line 718, in kivy._event.EventDispatcher.dispatch (/tmp/pip-a56bsdeu-build/kivy/_event.c:7726) 
    File "/usr/local/lib/python3.4/dist-packages/kivy/core/window/__init__.py", line 1086, in on_touch_down 
    if w.dispatch('on_touch_down', touch): 
    File "kivy/_event.pyx", line 718, in kivy._event.EventDispatcher.dispatch (/tmp/pip-a56bsdeu-build/kivy/_event.c:7726) 
    File "/usr/local/lib/python3.4/dist-packages/kivy/uix/widget.py", line 457, in on_touch_down 
    if child.dispatch('on_touch_down', touch): 
    File "kivy/_event.pyx", line 718, in kivy._event.EventDispatcher.dispatch (/tmp/pip-a56bsdeu-build/kivy/_event.c:7726) 
    File "/usr/local/lib/python3.4/dist-packages/kivy/uix/widget.py", line 457, in on_touch_down 
    if child.dispatch('on_touch_down', touch): 
    File "kivy/_event.pyx", line 718, in kivy._event.EventDispatcher.dispatch (/tmp/pip-a56bsdeu-build/kivy/_event.c:7726) 
    File "/home/sysop/.kivy/garden/garden.matplotlib/backend_kivy.py", line 1067, in on_touch_down 
    if(touch.button == "scrollup" or touch.button == "scrolldown"): 
AttributeError: 'MTDMotionEvent' object has no attribute 'button' 

これを回避する最善の方法は何ですか？

Answer 1

私は解決しました。私は、グラフィッククラスに追加：

def on_touch_down(self, touch): 
    print " touch" 

https://github.com/kivy/kivy/issues/4845