【发布时间】：2021-07-18 22:12:34
【问题描述】：
我从互联网上的代码中使用它是一个 kivy 应用程序，它从设备（手机或笔记本电脑）的相机中使用 这是代码：
__author__ = 'bunkus'
from kivy.app import App
from kivy.uix.widget import Widget
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.image import Image
from kivy.clock import Clock
from kivy.graphics.texture import Texture
import cv2
from kivy.lang import Builder
class CamApp(App):
def build(self):
self.img1=Image()
layout = BoxLayout()
layout.add_widget(self.img1)
#opencv2 stuffs
self.capture = cv2.VideoCapture(0)
cv2.namedWindow("CV2 Image")
Clock.schedule_interval(self.update, 1.0/33.0)
return layout
def update(self, dt):
# display image from cam in opencv window
ret, frame = self.capture.read()
cv2.imshow("CV2 Image", frame)
# convert it to texture
buf1 = cv2.flip(frame, 0)
buf = buf1.tostring()
texture1 = Texture.create(size=(frame.shape[1], frame.shape[0]), colorfmt='bgr')
#if working on RASPBERRY PI, use colorfmt='rgba' here instead, but stick with "bgr" in blit_buffer.
texture1.blit_buffer(buf, colorfmt='bgr', bufferfmt='ubyte')
# display image from the texture
self.img1.texture = texture1
if __name__ == '__main__':
CamApp().run()
cv2.destroyAllWindows()
之后我在 Windows 中成功运行了这个应用程序，我决定使用 google COALB 和 buildozer 将此代码制作成一个 APK 文件，所以我使用 colab 并在其中运行这些代码：
1: !pip install buildozer
2: !pip 安装 cython
3: !sudo apt-get install libffi-dev
4: !buildozer 初始化
然后我将 buildozer.spec 文件中的要求更改为 **python、kivy、opencv ** 并在 colab 中运行以下代码：
5: !buildozer -v android 调试
几分钟后，我收到此错误：
Exception in thread background thread for pid 12137:
Traceback (most recent call last):
File "/usr/lib/python3.7/threading.py", line 926, in _bootstrap_inner
self.run()
File "/usr/lib/python3.7/threading.py", line 870, in run
self._target(*self._args, **self._kwargs)
File "/usr/local/lib/python3.7/dist-packages/sh.py", line 1637, in wrap
fn(*rgs, **kwargs)
File "/usr/local/lib/python3.7/dist-packages/sh.py", line 2561, in background_thread
handle_exit_code(exit_code)
File "/usr/local/lib/python3.7/dist-packages/sh.py", line 2265, in fn
return self.command.handle_command_exit_code(exit_code)
File "/usr/local/lib/python3.7/dist-packages/sh.py", line 865, in handle_command_exit_code
raise exc
sh.ErrorReturnCode_127:
RAN: /content/.buildozer/android/platform/build-armeabi-v7a/build/other_builds/libffi/armeabi-v7a__ndk_target_21/libffi/autogen.sh
STDOUT:
/content/.buildozer/android/platform/build-armeabi-v7a/build/other_builds/libffi/armeabi-v7a__ndk_target_21/libffi/autogen.sh: 2: exec: autoreconf: not found
STDERR:
Traceback (most recent call last):
File "/usr/lib/python3.7/runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "/usr/lib/python3.7/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/content/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 1260, in <module>
main()
File "/content/.buildozer/android/platform/python-for-android/pythonforandroid/entrypoints.py", line 18, in main
ToolchainCL()
File "/content/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 709, in __init__
getattr(self, command)(args)
File "/content/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 154, in wrapper_func
build_dist_from_args(ctx, dist, args)
File "/content/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 216, in build_dist_from_args
args, "ignore_setup_py", False
File "/content/.buildozer/android/platform/python-for-android/pythonforandroid/build.py", line 577, in build_recipes
recipe.build_arch(arch)
File "/content/.buildozer/android/platform/python-for-android/pythonforandroid/recipes/libffi/__init__.py", line 40, in build_arch
shprint(sh.Command('./autogen.sh'), _env=env)
File "/content/.buildozer/android/platform/python-for-android/pythonforandroid/logger.py", line 167, in shprint
for line in output:
File "/usr/local/lib/python3.7/dist-packages/sh.py", line 911, in next
self.wait()
File "/usr/local/lib/python3.7/dist-packages/sh.py", line 841, in wait
self.handle_command_exit_code(exit_code)
File "/usr/local/lib/python3.7/dist-packages/sh.py", line 865, in handle_command_exit_code
raise exc
sh.ErrorReturnCode_127:
RAN: /content/.buildozer/android/platform/build-armeabi-v7a/build/other_builds/libffi/armeabi-v7a__ndk_target_21/libffi/autogen.sh
STDOUT:
/content/.buildozer/android/platform/build-armeabi-v7a/build/other_builds/libffi/armeabi-v7a__ndk_target_21/libffi/autogen.sh: 2: exec: autoreconf: not found
STDERR:
Command failed: /usr/bin/python3 -m pythonforandroid.toolchain create --dist_name=FSH --bootstrap=sdl2 --requirements=python3,kivy,opencv --arch armeabi-v7a --copy-libs --color=always --storage-dir="/content/.buildozer/android/platform/build-armeabi-v7a" --ndk-api=21
ENVIRONMENT:
CUDNN_VERSION = '8.0.4.30'
PYDEVD_USE_FRAME_EVAL = 'NO'
LD_LIBRARY_PATH = '/usr/local/nvidia/lib:/usr/local/nvidia/lib64'
CLOUDSDK_PYTHON = 'python3'
LANG = 'en_US.UTF-8'
HOSTNAME = '8763b8d4778c'
OLDPWD = '/'
CLOUDSDK_CONFIG = '/content/.config'
NVIDIA_VISIBLE_DEVICES = 'all'
DATALAB_SETTINGS_OVERRIDES = '{"kernelManagerProxyPort":6000,"kernelManagerProxyHost":"172.28.0.3","jupyterArgs":["--ip=\\"172.28.0.2\\""],"debugAdapterMultiplexerPath":"/usr/local/bin/dap_multiplexer"}'
ENV = '/root/.bashrc'
PAGER = 'cat'
NCCL_VERSION = '2.7.8'
TF_FORCE_GPU_ALLOW_GROWTH = 'true'
JPY_PARENT_PID = '47'
NO_GCE_CHECK = 'True'
PWD = '/content'
HOME = '/root'
LAST_FORCED_REBUILD = '20210420'
CLICOLOR = '1'
DEBIAN_FRONTEND = 'noninteractive'
LIBRARY_PATH = '/usr/local/cuda/lib64/stubs'
GCE_METADATA_TIMEOUT = '0'
GLIBCPP_FORCE_NEW = '1'
TBE_CREDS_ADDR = '172.28.0.1:8008'
TERM = 'xterm-color'
SHELL = '/bin/bash'
GCS_READ_CACHE_BLOCK_SIZE_MB = '16'
PYTHONWARNINGS = 'ignore:::pip._internal.cli.base_command'
MPLBACKEND = 'module://ipykernel.pylab.backend_inline'
CUDA_VERSION = '11.0.3'
NVIDIA_DRIVER_CAPABILITIES = 'compute,utility'
SHLVL = '1'
PYTHONPATH = '/env/python'
NVIDIA_REQUIRE_CUDA = ('cuda>=11.0 brand=tesla,driver>=418,driver<419 '
'brand=tesla,driver>=440,driver<441 brand=tesla,driver>=450,driver<451')
COLAB_GPU = '0'
GLIBCXX_FORCE_NEW = '1'
PATH = '/root/.buildozer/android/platform/apache-ant-.9.4/bin:/usr/local/nvidia/bin:/usr/local/cuda/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbn:/bin:/tools/node/bin:/tools/google-cloud-sdk/bin:/opt/bin'
LD_PRELOAD = '/usr/lib/x86_64-linux-gnu/libtcmalloc.so.4'
GIT_PAGER = 'cat'
_ = '/usr/local/bin/buildozer'
PACKAGES_PATH = '/root/.buildozer/android/packages'
ANDROIDSDK = '/root/.buildozer/android/platform/android-sdk'
ANDROIDNDK = '/root/.buildozer/android/platform/android-ndk-r19c'
ANDROIDAPI = '27'
ANDROIDMINAPI = '21'
Buildozer failed to execute the last command
The error might be hidden in the log above this error
Please read the full log, and search for it before
raising an issue with buildozer itself.
In case of a bug report, please add a full log with log_level = 2
【问题讨论】：
标签： python opencv kivy google-colaboratory buildozer