Kivy Apk Buildozer：ReferenceError：弱引用对象不再存在
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【中文标题】Kivy Apk Buildozer：ReferenceError：弱引用对象不再存在【英文标题】：Kivy Apk Buildozer : ReferenceError: weakly-referenced object no longer exists 【发布时间】：2020-07-19 22:29:30 【问题描述】：谁能告诉我为什么我的应用程序崩溃了。很奇怪，当我第一次运行我的应用程序时它没有崩溃。但是下次我运行它时它会崩溃。我得到这样的东西。 我正在使用 KIVYMD、KIVY、SOCKET、KIVY MAPVIEW、SQLITE3。下面是我通过 buildozer logcat 得到的错误。
04-07 21:49:46.650 4622 4659 I python : [WARNING] [Base ] Unknown <android> provider
04-07 21:49:46.656 4622 4659 I python : [INFO ] [Base ] Start application main loop
04-07 21:49:48.162 4622 4659 I python : [INFO ] [Base ] Leaving application in progress...
04-07 21:49:48.163 4622 4659 I python : Traceback (most recent call last):
04-07 21:49:48.163 4622 4659 I python : File "/home/tenzin/EcoMap/.buildozer/android/app/main.py", line 504, in <module>
04-07 21:49:48.164 4622 4659 I python : File "/home/tenzin/EcoMap/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/myapp/kivy/app.py", line 855, in run
04-07 21:49:48.164 4622 4659 I python : File "/home/tenzin/EcoMap/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/myapp/kivy/base.py", line 504, in runTouchApp
04-07 21:49:48.165 4622 4659 I python : File "/home/tenzin/EcoMap/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/myapp/kivy/core/window/window_sdl2.py", line 747, in mainloop
04-07 21:49:48.165 4622 4659 I python : File "/home/tenzin/EcoMap/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/myapp/kivy/core/window/window_sdl2.py", line 479, in _mainloop
04-07 21:49:48.166 4622 4659 I python : File "/home/tenzin/EcoMap/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/myapp/kivy/base.py", line 339, in idle
04-07 21:49:48.166 4622 4659 I python : File "/home/tenzin/EcoMap/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/myapp/kivy/clock.py", line 591, in tick
04-07 21:49:48.167 4622 4659 I python : File "kivy/_clock.pyx", line 384, in kivy._clock.CyClockBase._process_events
04-07 21:49:48.167 4622 4659 I python : File "kivy/_clock.pyx", line 414, in kivy._clock.CyClockBase._process_events
04-07 21:49:48.168 4622 4659 I python : File "kivy/_clock.pyx", line 412, in kivy._clock.CyClockBase._process_events
04-07 21:49:48.168 4622 4659 I python : File "kivy/_clock.pyx", line 167, in kivy._clock.ClockEvent.tick
04-07 21:49:48.169 4622 4659 I python : File "/home/tenzin/EcoMap/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/myapp/kivy/uix/label.py", line 417, in texture_update
04-07 21:49:48.169 4622 4659 I python : File "kivy/properties.pyx", line 497, in kivy.properties.Property.__set__
04-07 21:49:48.170 4622 4659 I python : File "kivy/properties.pyx", line 839, in kivy.properties.ListProperty.set
04-07 21:49:48.170 4622 4659 I python : File "kivy/properties.pyx", line 544, in kivy.properties.Property.set
04-07 21:49:48.171 4622 4659 I python : File "kivy/properties.pyx", line 599, in kivy.properties.Property.dispatch
04-07 21:49:48.176 4622 4659 I python : File "kivy/_event.pyx", line 1214, in kivy._event.EventObservers.dispatch
04-07 21:49:48.177 4622 4659 I python : File "kivy/_event.pyx", line 1096, in kivy._event.EventObservers._dispatch
04-07 21:49:48.177 4622 4659 I python : File "/home/tenzin/EcoMap/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/myapp/kivy/lang/builder.py", line 76, in call_fn
04-07 21:49:48.178 4622 4659 I python : File "kivy/weakproxy.pyx", line 35, in kivy.weakproxy.WeakProxy.__setattr__
04-07 21:49:48.178 4622 4659 I python : File "kivy/properties.pyx", line 497, in kivy.properties.Property.__set__
04-07 21:49:48.178 4622 4659 I python : File "kivy/properties.pyx", line 544, in kivy.properties.Property.set
04-07 21:49:48.179 4622 4659 I python : File "kivy/properties.pyx", line 599, in kivy.properties.Property.dispatch
04-07 21:49:48.179 4622 4659 I python : File "kivy/_event.pyx", line 1214, in kivy._event.EventObservers.dispatch
04-07 21:49:48.180 4622 4659 I python : File "kivy/_event.pyx", line 1096, in kivy._event.EventObservers._dispatch
04-07 21:49:48.180 4622 4659 I python : File "/home/tenzin/EcoMap/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/myapp/kivy/lang/builder.py", line 73, in call_fn
04-07 21:49:48.181 4622 4659 I python : File "<string>", line 54, in <module>
04-07 21:49:48.181 4622 4659 I python : File "kivy/weakproxy.pyx", line 32, in kivy.weakproxy.WeakProxy.__getattr__
04-07 21:49:48.182 4622 4659 I python : File "kivy/weakproxy.pyx", line 28, in kivy.weakproxy.WeakProxy.__ref__
04-07 21:49:48.182 4622 4659 I python : ReferenceError: weakly-referenced object no longer exists
04-07 21:49:48.182 4622 4659 I python : Python for android ended.
这是我的主要代码：
from kivymd.app import MDApp
from kivymd.uix.taptargetview import MDTapTargetView
from kivy.properties import ObjectProperty
from kivy.garden.mapview import MapView ,MapMarker,MapMarkerPopup
from kivy.uix.screenmanager import Screen,ScreenManager,SlideTransition
from kivymd.uix.snackbar import Snackbar
from kivy.uix.floatlayout import FloatLayout
from kivymd.uix.tab import MDTabsBase
import sqlite3
import socket
from kivy.clock import Clock
from kivymd.uix.dialog import MDDialog,MDInputDialog
from kivymd.uix.list import IRightBodyTouch, OneLineAvatarIconListItem
from kivy.properties import StringProperty
from kivymd.uix.selectioncontrol import MDSwitch
from kivymd.theming import ThemableBehavior
from kivymd.uix.list import MDList
from kivy.uix.widget import Widget
from kivy.graphics import Rectangle
from kivy.graphics.texture import Texture
from kivymd.uix.list import MDList
from gpsblinker import GpsBlinker
publ_ipv4 = "my server ip(for eg)"
s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
s.connect((publ_ipv4,12345))
from gpshelper import GpsHelper
rtr_count = 0
def send_mes(mes):
s.send(str(mes).encode("utf-8"))
#Connect to the local account database
account_db = sqlite3.connect("account.db")
ac_db_cur = account_db.cursor()
ac_db_cur.execute("SELECT * FROM accounts")
def remove():
ac_db_cur.execute("DELETE FROM accounts")
ac_db_cur.execute("DELETE FROM avatar")
account_db.commit()
tutorial = False
usr_ac_cred = ac_db_cur.fetchall()
print(usr_ac_cred)
logged_in = None
if len(usr_ac_cred) == 0:
logged_in = False
elif len(usr_ac_cred) != 0:
logged_in = True
print(logged_in)
class ScreenOne(Screen):
pass
class ScreenTwo(Screen):
pass
class ScreenThree(Screen):
pass
class LocationPopupMenu(MDDialog):
def build(self):
self.title = "Trashcan"
self.text = "If there is no trashcan here. You can remove this."
self.text_button_ok = "Remove"
self.text_button_cancel = "Cancel"
def __init__(self, lat,lon):
self.build()
super().__init__()
self.events_callback = self.remove(lon,lat)
def remove(self,lon,lat):
send_mes(["rm",[lon,lat]])
class TrashMarker(MapMarkerPopup):
def on_release(self):
# Open up the LocationPopupMenu
menu = LocationPopupMenu(self.lat,self.lon)
menu.size_hint = [.3, .3]
menu.open()
class SearchPopupMenu(MDInputDialog):
title = "Search by Address"
text_button_ok = "Search"
def __init__(self):
super().__init__()
self.size_hint = [.8,.3]
self.opacity = 1
self.events_callback = self.callback
def callback(self,*args):
address = self.text_field.text
self.geocode_get_lat_lon(address)
def geocode_get_lat_lon(self,address):
print("hello")
class Main(MapView):
getting_markers_timer = None
def start_getting_markers_in_fov(self):
self.map_source = "osm"
#after one second get markers in fov\
try :
self.getting_markers_timer.cancel()
except:
pass
self.getting_markers_timer = Clock.schedule_once(self.get_markers_in_fov,1)
def get_markers_in_fov(self,*args):
unp_bound = self.get_bbox()
lo = unp_bound[1]
lo_p = unp_bound[3]
la = unp_bound[0]
la_p = unp_bound[2]
ac_db_cur.execute("SELECT DISTINCT * FROM mpmr WHERE lon > %s AND lon < %s AND lat > %s AND lat < %s" % (
lo, lo_p, la, la_p))
mkr_data = ac_db_cur.fetchall()
print(mkr_data)
for set in mkr_data:
self.add_marker(TrashMarker(lat = set[1],lon = set[0]))
print("done")
class MyWidget(Widget):
def __init__(self, **args):
super(MyWidget, self).__init__(**args)
self.texture = Texture.create(size=(2, 2), colorfmt='rgba')
p1_color = [255, 96, 27, 255]
p2_color = [255, 0, 133, 255]
p3_color = [206, 255, 0, 255]
p4_color = [232, 202, 0, 255]
p1_color = [0, 171, 146, 255]
p2_color = [0, 174, 109, 255]
p3_color = [0, 138, 175, 255]
p4_color = [15, 154, 174, 255]
p = p1_color + p2_color + p3_color + p4_color
buf = bytes(p)
self.texture.blit_buffer(buf, colorfmt='rgba', bufferfmt='ubyte')
with self.canvas:
self.rect = Rectangle(pos=self.pos, size=self.size, texture=self.texture)
self.bind(size=self.update_rect)
self.bind(pos=self.update_rect)
def update_rect(self, *args):
self.rect.size = self.size
self.rect.pos = self.pos
#load map
settings_db = sqlite3.connect("Settings.db")
cur = settings_db.cursor()
cur.execute("select * from settings")
data_un= cur.fetchall()
print(data_un)
class DrawerList(ThemableBehavior, MDList):
def set_color_item(self, instance_item):
'''Called when tap on a menu item.'''
# Set the color of the icon and text for the menu item.
for item in self.children:
if item.text_color == self.theme_cls.primary_color:
item.text_color = self.theme_cls.text_color
break
instance_item.text_color = self.theme_cls.primary_color
class Settings_screen_list(OneLineAvatarIconListItem):
icon = StringProperty("android")
class Right_switch(IRightBodyTouch,MDSwitch):
pass
class Manager(ScreenManager):
Home = ObjectProperty(None)
Settings = ObjectProperty(None)
class Tab(FloatLayout, MDTabsBase):
'''Class implementing content for a tab.'''
class MainApp(MDApp):
data =
"help-circle-outline" : "Help",
"mapbox" : "Add Trashcan",
"settings" : "settings"
myscreen = ObjectProperty()
search_menu= None
def on_start(self):
self.root.ids.parent_manager.transition = SlideTransition()
self.root.ids.manager.transition = SlideTransition()
self.root.ids.manager.transition.direction = "left"
self.root.ids.manager.transition.direction = "left"
try:
self.root.ids.avatar_usr.source = ac_db_cur.execute("SELECT * FROM avatar").fetchall()[0][0]
self.root.ids.avatar_usr_2.source = ac_db_cur.execute("SELECT * FROM avatar").fetchall()[0][0]
self.root.ids.uad_username.text = usr_ac_cred[0][1].title()
self.root.ids.uad_email.text = usr_ac_cred[0][0]
self.root.ids.nav_username.text = usr_ac_cred[0][1].title()
self.root.ids.nav_email.text = usr_ac_cred[0][0]
#initialize gps
except:
pass
def build(self):
#Accessing settings database
cur.execute("SELECT mode from settings where attribute='darkmode' ")
GpsHelper().run()
lat = self.root.ids.blinker.lat
lon = self.root.ids.blinker.lon
gps_stat = [[lon,lat],"app_gps"]
send_mes(gps_stat)
response = s.recvfrom(100000)
response = eval(response[0].decode("utf-8"))
print(response)
if response[0] == "db_register":
ac_db_cur.execute("DELETE FROM mpmr")
for or_pair in response[1]:
sql_scr = "INSERT INTO mpmr VALUES("+str(or_pair[0])+","+str(or_pair[1])+")"
ac_db_cur.execute(sql_scr)
account_db.commit()
#App theme and UI color schemes
darkmode_opt_list = cur.fetchall()
darkmode_opt = darkmode_opt_list[0][0]
self.theme_cls.primary_palette = "Cyan"
self.theme_cls.primary_hue = "800"
self.theme_cls.accent_palette = "Gray"
self.theme_cls.accent_hue = "50"
self.search_menu = SearchPopupMenu()
self.tap_target_view = MDTapTargetView(
widget=self.root.ids.button,
title_text="Click here to locate you.",
description_text="Make sure we are right over you",
widget_position="left_bottom",
)
if darkmode_opt == "on":
print("dark mode on")
self.theme_cls.theme_style = "Dark"
self.root.ids.darkmode_switch.active= True
else:
print("light mode on")
self.theme_cls.theme_style = "Light"
self.root.ids.darkmode_switch.active = False
if logged_in == True:
self.root.ids.manager.current = "Home"
def repos(button):
self.root.ids.ecomap.center_on(self.root.ids.blinker.lat,self.root.ids.blinker.lon)
self.root.ids.ecomap.zoom = 18
self.tap_target_view.bind(on_close=repos)
def drop_marker_db(button):
pass
# temp_marker = MapMarker(lat=val[0], lon=val[1])
# screen.ids.ecomap.add_marker(temp_marker)
try:
self.start_anim.cancel()
except:
pass
self.start_anim = Clock.schedule_once(self.start_tp_anim, 3.5)
elif logged_in == False:
self.root.ids.parent_manager.current = "account_setup"
def start_app(self):
self.root.ids.parent_manager.current = "parent"
self.root.ids.manager.current = "Home"
usr_ac_cred = ac_db_cur.execute("SELECT * FROM accounts").fetchall()
self.root.ids.uad_username.text = usr_ac_cred[0][1]
self.root.ids.uad_email.text = usr_ac_cred[0][0]
self.root.ids.nav_username.text = usr_ac_cred[0][1]
self.root.ids.nav_email.text = usr_ac_cred[0][0]
print(self.root.ids.blinker.lat)
print(self.root.ids.blinker.lon)
def start_tp_anim(self,*args):
self.tap_target_start()
def init_dark_mode(self,select,value):
if value:
self.theme_cls.theme_style = "Dark"
cur.execute("UPDATE settings SET mode='on' WHERE attribute = 'darkmode'")
settings_db.commit()
else:
self.theme_cls.theme_style = "Light"
cur.execute("UPDATE settings SET mode='off' WHERE attribute = 'darkmode'")
settings_db.commit()
def tap_target_start(self):
if self.tap_target_view.state == "close":
self.tap_target_view.start()
else:
self.tap_target_view.stop()
def callback(self,instance):
if instance.icon == "settings":
self.root.ids.manager.transition.direction = "left"
self.root.ids.manager.current = "Settings"
elif instance.icon == "mapbox":
self.register_trashcan()
elif instance.icon == "help-circle-outline":
self.root.ids.manager.transition.direction = "left"
self.root.ids.manager.current = "help"
def open_account(self):
self.root.ids.parent_manager.current="User_account_details"
self.root.ids.parent_manager.transition.direction = "left"
self.root.ids.manager.transition.direction = "left"
def open_home(self):
self.root.ids.manager.current="Home"
def sign_up(self):
username = self.root.ids.name_field.text
email = self.root.ids.email_field.text
password = self.root.ids.password_field.text
Acc_list = ["acc", username, email, password]
if username == "" or email == ""or password == "":
if username == "":
self.root.ids.name_field.hint_text = "Name field cannot be empty!"
elif email == "":
self.root.ids.email_field.hint_text = "Email field cannot be empty!"
elif password == "":
self.root.ids.password_field.hint_text = "Password field cannot be empty!"
else :
print(Acc_list)
send_mes(Acc_list)
response = s.recvfrom(1024)
response = str(response[0].decode("utf-8"))
print(response)
if response == "ACCOUNT CREATED":
sql_script = "INSERT INTO accounts VALUES('" + email + "', '" + username + "' , '" + password + "')"
ac_db_cur.execute(sql_script)
account_db.commit()
self.root.ids.parent_manager.current = "profile_picture_opt"
self.root.ids.uad_username.text = username
self.root.ids.uad_email.text = email
self.root.ids.nav_username.text = username
self.root.ids.nav_email.text = email
GpsHelper().run()
tutorial = True
elif response == "EM_AL_EX":
self.root.ids.email_field.text = ""
self.root.ids.email_field.hint_text = "Email Id is already used!"
#register this account to server database
#register this account credentials to localhost database
def go_to_login(self):
self.root.ids.parent_manager.current = "login_screen"
self.root.ids.parent_manager.transition.direction = "left"
def login(self):
if len(self.root.ids.login_email_field.text) == 0 or len(self.root.ids.login_pw_field.text) == 0:
self.root.ids.login_email_field.hint_text = "Email field cannot be empty"
self.root.ids.login_pw_field.hint_text = "Password field cannot be empty"
else:
print("hey look over here")
print(type(self.root.ids.login_email_field.text))
print(type(self.root.ids.login_pw_field.text))
cred_cont = [(self.root.ids.login_email_field.text.lower(),"",self.root.ids.login_pw_field.text),"ch_acc_cred"]
send_mes(cred_cont)
response = s.recvfrom(1024)
response = str(response[0].decode("utf-8"))
if response == "error_lia":
pass
else:
response = eval(response)
if response[0]=="verified":
sql_scr1 = "DELETE FROM accounts"
sql_scr2 = "INSERT INTO accounts VALUES('"+self.root.ids.login_email_field.text+"', '"+response[1]+"' , '"+self.root.ids.login_pw_field.text+"')"
ac_db_cur.execute(sql_scr1)
ac_db_cur.execute(sql_scr2)
account_db.commit()
global logged_in
logged_in = True
self.root.ids.parent_manager.current = "profile_picture_opt"
self.root.ids.parent_manager.transition.direction = "left"
GpsHelper().run()
tutorial = True
def confirm_av(self):
usr_av = None
selected = None
for avatar in [self.root.ids.m1,self.root.ids.m2,self.root.ids.m3,self.root.ids.m4,self.root.ids.m5,self.root.ids.m6,self.root.ids.m7,self.root.ids.w1,self.root.ids.w2,self.root.ids.w3,self.root.ids.w4,self.root.ids.w5,self.root.ids.w6,self.root.ids.w7]:
if avatar.size == [250,250]:
selected = True
break
if selected == True:
ac_db_cur.execute("DELETE FROM avatar")
ac_db_cur.execute("INSERT INTO avatar VALUES('"+avatar.icon+"')")
account_db.commit()
self.start_app()
av = ac_db_cur.execute("SELECT * FROM avatar").fetchall()[0][0]
self.root.ids.avatar_usr.source = av
self.root.ids.avatar_usr_2.source = av
else :
pass
def confirm_ava(self):
usr_av = None
selected = None
for avatar in [self.root.ids.m1a,self.root.ids.m2a,self.root.ids.m3a,self.root.ids.m4a,self.root.ids.m5a,self.root.ids.m6a,self.root.ids.m7a,self.root.ids.w1a,self.root.ids.w2a,self.root.ids.w3a,self.root.ids.w4a,self.root.ids.w5a,self.root.ids.w6a,self.root.ids.w7a]:
if avatar.size == [250,250]:
selected = True
break
if selected == True:
ac_db_cur.execute("DELETE FROM avatar")
ac_db_cur.execute("INSERT INTO avatar VALUES('"+avatar.icon+"')")
account_db.commit()
av = ac_db_cur.execute("SELECT * FROM avatar").fetchall()[0][0]
self.root.ids.avatar_usr.source = av
self.root.ids.avatar_usr_2.source = av
else :
pass
def register_trashcan(self):
lat = self.root.ids.blinker.lat
lon = self.root.ids.blinker.lon
list = ["tr_reg",[lat,lon]]
send_mes(list)
self.snackbar = Snackbar(text="Trashcan added.Will be shown soon!")
self.snackbar.show()
def dev(self):
self.snackbar = Snackbar(text="Developer : Tenzin Dayoe")
self.snackbar.show()
def sign_out(self):
ac_db_cur.execute("DELETE FROM accounts ")
ac_db_cur.execute("DELETE FROM avatar")
account_db.commit()
self.root.ids.parent_manager.current = "account_setup"
self.root.ids.email_field.text = ""
self.root.ids.name_field.text = ""
self.root.ids.password_field.text = ""
def send_fb(self):
fb_email = self.root.ids.feedback_email.text
fb_data = self.root.ids.feedback_data.text
if len(fb_email) != 0 and len(fb_data) != 0:
fb_container = [[fb_email, fb_data],"feedback"]
send_mes(fb_container)
self.snackbar = Snackbar(text="Sent. Thank you!")
self.snackbar.show()
self.root.ids.feedback_email.text = ""
self.root.ids.feedback_data.text = ""
else:
if len(fb_email) == 0:
self.root.ids.feedback_email.hint_text = "Email id required!"
if len(fb_data) == 0:
self.root.ids.feedback_data.hint_text = "Type Feedback or bugs you've found in the App! "
MainApp().run()
【问题讨论】：
您的示例太复杂，无法查看，请提供一个最小的示例。要产生这样的东西，请删除部分代码，直到错误不再出现，然后添加回最后的内容并继续删除更多内容。作为奖励，这很可能会帮助您找到导致问题的代码区域。 【参考方案1】：我遇到了同样的问题。在我的情况下，我通过用 3.7.5 而不是 3.8.1 替换我的 hostpython3 来解决这个问题。在您的 buildozer.spec 要求中，您需要输入 hostpython3==3.7.5, python3==3.7.5 。之后删除您的文件夹 .buildozer/android/platform/build-armeabi 并重试构建您的应用程序。
【讨论】：
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