Kivy 和 android 共享首选项

我正在寻找一种从 Kivy 框架在 Android 设备上持久存储设置的方法。

我发现 Kivy 文档总体信息丰富，但在这个特定领域含糊不清。它提到了三种方法（抱歉，没有足够的声誉来提供可点击的链接、相对路径kivy.org假如，如果有人可以修复这些链接，我会很高兴

Kivy.Config用于存储与App类实例化相关的设置。 在导入任何其他 kivy 模块之前，它通常放置在 Python 脚本的最顶部。 此方法不是特定于平台的，但配置文件的默认路径会根据平台而变化。

from kivy.config import Config
desktop=Config.getint('kivy', 'desktop')
if desktop == 1:
    print "This app is being run on a desktop."

DictStore 是一个将字典存储到磁盘的存储类。 filename 参数指定存储字典的文件的名称。 当调用 get 函数时，会返回一个 Python 字典。

from kivy.app import App
from kivy.uix.button import Button
from kivy.storage.dictstore import DictStore

class TestApp(App):
    def build(self):
        try:
            store = DictStore(filename="MY_SETTINGS")
            dictionary = store.get("my_important_variable")
            print "\t\t\t KIVY 2: DictStore Succeeded",
        except KeyError as err:
            dictionary = {'name': 'None'}
            print ("KIVY, 2, error: {}".format(repr(err)))

        self.text = str(dictionary)
        btn1 = Button(text=self.text)
        btn1.bind(on_press=self.callback) #
        return btn1

    def callback(self, instance):
        print('The button <%s> is being pressed, SAVING...' % instance.text)
        try:
            store = DictStore(filename="MY_SETTINGS")
            store.put("my_important_variable", name="John")
        except Exception as err:
            print ("KIVY, 5, error: {}".format(repr(err)))



if __name__ == '__main__':
    TestApp().run()

我将在下面提供用于访问共享首选项的代码。 如果您有兴趣了解更多信息，请阅读http://developer.android.com/guide/topics/data/data-storage.html http://developer.android.com/guide/topics/data/data-storage.html and https://kivy.org/planet/2015/04/python-on%C2%A0android/ https://kivy.org/planet/2015/04/python-on%C2%A0android/

from kivy.app import App
from kivy.uix.button import Button

import jnius

class TestApp(App):
    def build(self):
        try:
            PythonActivity = jnius.autoclass('org.renpy.android.PythonActivity')
            activity = PythonActivity.mActivity
            cntxt = activity.getApplicationContext()
            prefs = cntxt.getSharedPreferences("MY_PREFS", cntxt.MODE_PRIVATE )
            print "KIVY ACQUIRED SHARED PREFS"
            myVar = prefs.getString("my_important_variable", "Default String")
            print "\tKIVY 3: Retrieved SharedPref"
        except jnius.jnius.JavaException as err:
            myVar="Error Loading Prefs."
            print ("KIVY, 3, error: {}".format(repr(err)))

        self.text = myVar
        btn1 = Button(text=self.text)
        btn1.bind(on_press=self.callback) #
        return btn1

    def callback(self, instance):
        print('The button <%s> is being pressed, SAVING...' % instance.text)
        try:
            PythonActivity = jnius.autoclass('org.renpy.android.PythonActivity')
            activity = PythonActivity.mActivity
            cntxt = activity.getApplicationContext()
            prefs = cntxt.getSharedPreferences("MY_PREFS", cntxt.MODE_PRIVATE)
            editor = prefs.edit()
            editor.putString("my_important_variable", "This is important!")
            editor.commit()
            print "\tKIVY: Added string <This is important!> to shared prefs."
        except Exception as err:
            print ("\tKIVY, 6, error: {}".format(repr(err)))

if __name__ == '__main__':
    TestApp().run()