使用 buildozer 在 android 设备上部署 kivy 应用程序时出现问题（#waiting for application to start）

Question

我正在尝试将 Kivy Selfie 相机应用程序部署到 Android 设备，我在终端上循环收到此消息

#waiting for the application to start

我确保设备已连接并且开发者模式已经激活。那么如何解决这个问题？？？

Answer 1

我使用 xcamera 制作了一个 hello world 相机应用程序。

您可以使用它保存图片，但它只会在应用程序的私有目录范围内。除非您具有root访问权限，否则无法访问。 要将其保存在手机共享内存中，您可以按照此示例进行操作 Click here

main.py

from kivy.clock import Clock
from kivymd.app import MDApp
from kivy.lang import Builder
from kivy_garden.xcamera import XCamera
from android.permissions import request_permissions, Permission
#from storage import  SharedStorage
try:
    request_permissions([Permission.INTERNET,
                         Permission.READ_EXTERNAL_STORAGE,
                         Permission.WRITE_EXTERNAL_STORAGE,
                         Permission.CAMERA])
except Exception as e:
    print("Like it's gonna work after this ! XD")
    print(e)
KV = """
#:import XCamera kivy_garden.xcamera.XCamera
BoxLayout:
    orientation: 'vertical'
    BoxLayout:
        id: camera_layout
        canvas.before:
            PushMatrix
            Rotate:
                angle: -90
                origin: self.center
        canvas.after:
            PopMatrix
        XCamera:
            id: camera
"""
class uiApp(MDApp):
    def shoot(self):
        print("picture taken")
        #SharedStorage().insert(path+local_filename, 'Downloads')
        print("End here")
    def my_callback(self, dt):
        print("Taking picture...")
        self.screen.ids["camera"].shoot()
        print("exit my_callback !")
    def build(self):
        self.screen = Builder.load_string(KV)
        self.screen.ids["camera"].shoot = self.shoot
        self.event = Clock.schedule_once(self.my_callback, 5)
        return self.screen
uiApp().run()
 

查看要求并确保已安装

查看本地机器上安装的所有内容 pip list

buildozer.spec

[app]
# (str) Title of your application
title = Hello_testcamera
# (str) Package name
package.name = Testcam
# (str) Package domain (needed for android/ios packaging)
package.domain = org.test.cam
# (str) Source code where the main.py live
source.dir = .
# (list) Source files to include (let empty to include all the files)
source.include_exts = py,png,jpg,kv,atlas,json,xlsx,pdf,crt,pem,cer,ttf,json
# (list) List of inclusions using pattern matching
#source.include_patterns = assets/*,images/*.png
# (list) Source files to exclude (let empty to not exclude anything)
#source.exclude_exts = spec
# (list) List of directory to exclude (let empty to not exclude anything)
#source.exclude_dirs = tests, bin
# (list) List of exclusions using pattern matching
#source.exclude_patterns = license,images/*/*.jpg
# (str) Application versioning (method 1)
version = 0.35

requirements = xcamera,hostpython3==3.7.9,python3==3.7.9,kivy==2.0.0,kivymd==0.104.1,dateutil,urllib3,jmespath,jnius,cython,android,opencv-python,android,pillow,plyer,requests,chardet,idna

orientation = all
# (list) List of service to declare
#services = NAME:ENTRYPOINT_TO_PY,NAME2:ENTRYPOINT2_TO_PY
#
# OSX Specific
#
#
# author = © Copyright Info
# change the major version of python used by the app
osx.python_version = 3
# Kivy version to use
osx.kivy_version = 1.9.1
#
# Android specific
#
# (bool) Indicate if the application should be fullscreen or not
fullscreen = 1

#android.presplash_color = #FFFFFF
# (list) Permissions
android.permissions = INTERNET,WRITE_EXTERNAL_STORAGE,READ_EXTERNAL_STORAGE,CAMERA
# (int) Target Android API, should be as high as possible.
android.api = 29
# (int) Minimum API your APK will support.
#android.minapi = 27
# (int) Android SDK version to use
#android.sdk = 21
# (str) Android NDK version to use
#android.ndk = 19c
# (int) Android NDK API to use. This is the minimum API your app will support, it should usually match android.minapi.
#android.ndk_api = 21
android.accept_sdk_license = True

# (str) The Android arch to build for, choices: armeabi-v7a, arm64-v8a, x86, x86_64
android.arch = arm64-v8a