Android SDK 工具:OpenCV 需要 Android SDK 工具修订版 14 或更新版本 [英] Android SDK Tools: OpenCV requires Android SDK Tools revision 14 or newer

问题描述

我正在尝试使用 kivy、opencv 创建一个简单的照片捕获应用程序.当我尝试使用 buildozer 创建一个 .apk 文件，并将 opencv 放在 .spec 文件的需求中时，我遇到了这个错误

I'm trying to create a simple photo capture app using kivy, opencv. When I tried to create an .apk file using buildozer, and put opencv in requirements at .spec file then I faced this error

-- Android: fixup -g compiler option from Android toolchain
-- Update variable ANDROID_SDK from environment: /home/livon/.buildozer/android/platform/android-sdk
-- Android SDK Tools: ver. 2.0 (description: 'Android SDK Command-line Tools')
-- Android SDK Build Tools: ver. 30.0.0 (subdir 30.0.0 from 30.0.0)
CMake Error at cmake/android/OpenCVDetectAndroidSDK.cmake:176 (message):
Android SDK Tools: OpenCV requires Android SDK Tools revision 14 or newer.

Use BUILD_ANDROID_PROJECTS=OFF to prepare Android project files without
building them
Call Stack (most recent call first):
CMakeLists.txt:780 (include)


-- Configuring incomplete, errors occurred!
See also "/home/livon/Desktop/Ocv/.buildozer/android/platform/build-armeabi- 
v7a/build/other_builds/opencv/armeabi-v7a__ndk_target_21/opencv/build/CMakeFiles/CMakeOutput.log".
See also "/home/livon/Desktop/Ocv/.buildozer/android/platform/build-armeabi- 
v7a/build/other_builds/opencv/armeabi-v7a__ndk_target_21/opencv/build/CMakeFiles/CMakeError.log".er
# Command failed: /home/livon/venv/bin/python3 -m pythonforandroid.toolchain create --dist_name=test 
--bootstrap=sdl2 --requirements=python3,kivy,opencv --arch armeabi-v7a --copy-libs --color=always -- 
storage-dir="/home/livon/Desktop/Ocv/.buildozer/android/platform/build-armeabi-v7a" --ndk-api=21
# ENVIRONMENT:
#     ANDROIDNDK = '/home/livon/.buildozer/android/platform/android-ndk-r19c'
#     ANDROIDAPI = '27'
#     ANDROIDMINAPI = '21'

我也尝试更新ANDROID_SDK，我去了(/home/livon/.buildozer/android/platform/android-sdk)这个文件夹并使用

I have also tried to update ANDROID_SDK, I went to (/home/livon/.buildozer/android/platform/android-sdk) this folder and updated it using

sudo apt-get upgrade

但是更新到 30.0.0 后没有任何变化，错误依旧.

But after updated it to 30.0.0 nothing has changed, the error remain same.

我正在使用

1. Ubuntu 19.10
2. Python 3.7.5
3. 基维 1.11.1
4. 构建器 1.2.0
5. openCv 4

推荐答案

我也遇到这个错误，苦恼了很久 :(

I get this error too and fretted for a long time : (

经过一番谷歌搜索，我找到了一些可能有帮助的解决方案.

After a bunch of google searches, I found some solutions that may help.

至少它适用于我的 Ubuntu 20.04 VM.

At least it works on my Ubuntu 20.04 VM.

(下载 Android Studio 并复制粘贴目录部分(最后 3 个步骤)的说明可能会解决您的问题，因为我也遇到了与您相同的错误)

( The instruction to download Android Studio and copy-paste the dir part (last 3 steps) may solve your problem , as I also got the same error as you )

• 第一次更新apt

sudo apt-get update

升级包

upgrade pkgs

sudo apt-get upgrade

安装 python3 + pip

install python3 + pip

sudo apt-get install python3 python3-pip

配置默认 Python 版本 ( ref_1 ) ( ref_2 )

sudo update-alternatives --install /usr/bin/python python /usr/bin/python<X.X.X> 1
sudo update-alternatives --config python

其中 是所需的 Python 版本.

where <X.X.X> is the desired Python ver.

安装开发工具 + 依赖项

install dev tools + dependencies

sudo apt-get install build-essential \
  libssl-dev \
  libffi-dev \
  python3-dev \
  dh-autoreconf \
  autoconf \
  libtool \
  pkg-config \
  zlib1g-dev \
  libncurses5-dev \
  libncursesw5-dev \
  libtinfo5 \
  cmake \
  ccache

安装kivy

install kivy

• 通过apt

sudo apt-get install python3-kivy

通过 Python pip(我的首选方式)

through Python pip ( my preferred way )

python3 -m pip install kivy==2.0.0

安装cython

pip3 install Cython
sudo apt-get install cython

//我是这样做的

安装 javac

sudo apt-get install openjdk-11-jdk openjdk-8-jdk

检查是否安装了java和javac

java -version
javac -version

配置.java + javac(我配置为openjdk8-jdk)

sudo update-alternatives --config java

sudo update-alternatives --config javac

安装 cmake(我都做了)(ref )

• 蟒蛇方式

• python way

pip3 install cmake

手动方式

manual way

cd /tmp
wget https://github.com/Kitware/CMake/releases/download/v3.20.0/cmake-3.20.0.tar.gz
tar -zxvf cmake-3.20.0.tar.gz
cd cmake-3.20.0
./bootstrap
make
sudo make install

安装 buildozer(我使用官方方式重新安装了它)

install buildozer ( I reinstalled it using the official way )

• 官方方式

• official way

pip3 install --user --upgrade buildozer

通过 git clone

through git clone

sudo apt-get install git
git clone https://github.com/kivy/buildozer.git
cd buildozer
sudo python3 setup.py install

安装 Python IDLE(可选)(以下任一项)

install Python IDLE ( optional ) ( either one of the following )

sudo apt-get install idle3

安装 Android Studio

install Android Studio

我尝试了不安装Android Studio的方法(仅使用cmdline-tools)，但就是想不通:(

I tried the way not to install Android Studio ( using cmdline-tools only ), but just can't figure it out : (

sudo snap install android-studio --classic

运行它，让它自己设置一切.

and run it and let it set up everything by itself.

之后，只需关闭它

一切设置好后:(ref)

打开文件

复制位于 ~/Home/Android/Sdk/

将其粘贴到 ~/Home/.buildozer/android/platform/android-sdk 之后 压缩位于那里的原始 tools 目录(通过右键单击 --> 压缩 )(如果您看不到目录，请确保选中文件选项中的 show hidden file 复选框)

paste it at ~/Home/.buildozer/android/platform/android-sdk after compressing the original tools dir located there ( by right click --> compress ) ( if you can't see the dir, make sure to check the show hidden file checkbox in the file's option )

然后转到~/Home/.buildozer/android/platform/android-sdk/tools/bin 并在终端中打开

then go to ~/Home/.buildozer/android/platform/android-sdk/tools/bin and open in terminal

./sdkmanager --install "tools"
exit

重新构建项目转到您的项目目录

rebuild the project again go to your project's dir

buildozer init  # if you haven't got the buildozer.spec in your project's dir
buildozer android debug

*.apk 将在 bin

我的buildozer.spec:

title = Screen_Recorder
package.name = screen_recorder
package.domain = org.test
souce.dir = .
source.include_exts = py,png,jpg,kv,atlas
requirements = python3,kivy==2.0.0,android,opencv==4.5.3,numpy,pillow,EasyProcess,entrypoint2,mss,jeepney,plyer,pyscreenshot
osx.python_version = 3
osx.kivy_version = 2.0.0
android.permission = CAMERA,RECORD_AUDIO,WRITE_EXTERNAL_STORAGE,READ_EXTERNAL_STORAGE

参考

• Stackoverflow 问题:带有 opencv 的 kivy 相机应用程序android显示黑屏
• Stackoverflow 问题:启动时生成的日志Android 版 Kivy Launcher 中的应用
• Stackoverflow 问题:我无法为 android 构建 buildozer
• Youtube 视频(我关注此视频(复制粘贴目录部分)以使其正常工作): 在 ubuntu 上让 opencv4 与 kivy/buildozer 一起工作
• git 讨论:Android 编译使用 opencv 失败
• Stackoverflow 问题:python 中使用 request_permissions 的 android 权限
• python-for-android 文档 - 在 Android 上工作
• 如果您对根目录进行了更改，请关闭终端并重新打开它
• 不要编辑 .bashrc 文件(就我而言，我没有)
• 每次重建项目时删除项目目录中的 bin 和 .buildozer 目录 OR 运行 buildozer ;干净
• 使用ls列出当前目录下的所有文件+文件夹
• 使用 cd 导航到目录
• 使用 cd .. 导航到上一个目录
• 如果你需要像 CAMERA 这样的权限，你需要把它添加到 buildozer.spec 的 permission 并在你的*.py 获得 android 权限:
• close the terminal and reopen it if you make changes to the root dir
• don't edit the .bashrc file ( in my case, I didn't )
• delete the bin and .buildozer dir in your project's dir every time you rebuild your project OR run buildozer <platform> clean
• use ls to list all files + folders in the current dir
• use cd <dir> to navigate to directory
• use cd .. to navigate to the previous dir
• if you need permission like CAMERA , you need to add it to the buildozer.spec's permission and add the following in your *.py to gain android permission:

from kivy.utils import platform

    if platform == "android":

        from android.permissions import request_permissions, Permission

        request_permissions([ <permissions> ])  # e.g. Permission.WRITE_EXTERNAL_STORAGE , Permission.READ_EXTERNAL_STORAGE , Permission.CAMERA , Permission.RECORD_AUDIO , etc.

(您不需要安装或导入android，只需在buildozer.spec 的requirement 中包含android> )

( You don't need to install or import android, just include android in the buildozer.spec's requirement )

希望对你有帮助(如有不妥请指正)

Hope This Helps (please correct if you find anything is incorrect)

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