问Kivy应用程序在安卓KitKat ( Kivy Launcher)上崩溃

EN

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.recycleview import RecycleView
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import StringProperty
from kivy.uix.recycleview.views import RecycleDataViewBehavior

items = [
    {"text": "white",    "selected": 'normal', "input_data": ["some","random","data"]},
    {"text": "lightblue","selected": 'normal', "input_data": [1,6,3]}
]

class MyViewClass(RecycleDataViewBehavior, BoxLayout):

    text = StringProperty("")
    index = None

    def set_state(self,state,app):
        app.root.ids.rv.data[self.index]['selected'] = state

    def refresh_view_attrs(self, rv, index, data):
        self.index = index
        return super(MyViewClass, self).refresh_view_attrs(rv, index, data)

class MyRecycleView(RecycleView):

    data = items

    def print_data(self,data):
        print([item['input_data'] for item in data if item['selected'] == 'down'])

KV = '''

<MyViewClass>:
    orientation: 'horizontal'
    CheckBox:
        on_state: root.set_state(self.state,app)
    Label:
        text: root.text

BoxLayout:
    orientation: 'vertical'
    MyRecycleView:
        id: rv
        viewclass: 'MyViewClass'
        RecycleBoxLayout:
            orientation: 'vertical'
            default_size: None, dp(56)
            default_size_hint: 1, None
            size_hint_y: None
            height: self.minimum_height
    Button:
        size_hint_y: 0.1
        text: "Print data"
        on_release: rv.print_data(rv.data)

'''

class Test(App):
    def build(self):
        root = Builder.load_string(KV)
        return root


Test().run()

my_app/:
   -main.py
   -android.txt
   -kivy/
      -uix/
         -recycleview/
            -__init__.py
            -datamodel.py
            -layout.py
            -views.py

[INFO              ] Logger: Record log in /storage/emulated/0/kivy/del/.kivy/logs/kivy_17-04-27_2.txt
[INFO              ] Kivy: v1.9.1
[INFO              ] Python: v2.7.2 (default, Mar 20 2016, 23:30:13) 
[GCC 4.8]
[INFO              ] Factory: 179 symbols loaded
[WARNING           ] stderr: /data/data/org.kivy.pygame/files/lib/python2.7/site-packages/kivy/core/image/img_pygame.py:13: RuntimeWarning: import cdrom: No module named cdrom
[WARNING           ] stderr: (ImportError: No module named cdrom)
[INFO              ] Image: Providers: img_tex, img_dds, img_gif, img_pygame, img_pil (img_ffpyplayer ignored)
[WARNING           ] stderr: Traceback (most recent call last):
[WARNING           ] stderr:   File "main.py", line 3, in <module>
[WARNING           ] stderr:     from kivy.uix.recycleview import RecycleView
[WARNING           ] stderr: ImportError: No module named recycleview