android - Python Buildozer PyMySQL 无法连接

Question

我已经使用 pymysql 模块在 kivy 中创建了一个应用程序来创建一个简单的登录系统。 python 文件在我的桌面上运行时没有错误，但是当我在我的 Nexus 平板电脑上运行该应用程序时，它崩溃并抛出以下错误。

有人可以找出这个问题的原因并指出正确的方向吗？谢谢。

06-07 12:07:35.319 10766 10786 I python  :  Traceback (most recent call     last):
06-07 12:07:35.342 10766 10786 I python  :    File "/home/andrew/Desktop/Python/Kivy/1-application/.buildozer/android/app/main.py", line 83, in <module>
06-07 12:07:35.343 10766 10786 I python  :    File "/home/andrew/Desktop/Python/Kivy/1-application/.buildozer/android/platform/build/dists/myapp/private/lib/python2.7/site-packages/pymysql/__init__.py", line 90, in Connect
06-07 12:07:35.344 10766 10786 I python  :    File "/home/andrew/Desktop/Python/Kivy/1-application/.buildozer/android/platform/build/dists/myapp/private/lib/python2.7/site-packages/pymysql/connections.py", line 706, in __init__
06-07 12:07:35.345 10766 10786 I python  :    File "/home/andrew/Desktop/Python/Kivy/1-application/.buildozer/android/platform/build/dists/myapp/private/lib/python2.7/site-packages/pymysql/connections.py", line 963, in connect
06-07 12:07:35.346 10766 10786 I python  :  pymysql.err.OperationalError: (2003, "Can't connect to MySQL server on '<IP ADDRESS>' ([Errno 13] Permission denied)")
06-07 12:07:35.402 10766 10786 I python  : Python for android ended.

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编辑:我进入 buildozer.spec 文件并取消注释互联网访问权限，现在我收到超时错误。

pymysql.err.OperationalError: (2003, "Can't connect to MySQL server on '<IP ADDRESS>' (timed out)")

这是我如何尝试连接到我的数据库的示例...

from kivy.app import App
from kivy.uix.gridlayout import GridLayout
import pymysql.cursors

class LoginScreen(GridLayout):
    #CONTENT HERE

class SimpleKivy(App):
    def build(self):
        return LoginScreen()

if __name__ == "__main__":
    #Error Happens Here
    connection = pymysql.connect(host="<IP ADDRESS>", user="usr", password="pswd", db="slogin")

    SimpleKivy().run()

Answer 1

已修复。防火墙阻止了对 MYSQL 服务器的访问，没有异常处理的错误导致应用程序崩溃。