Android SDK 工具：OpenCV 需要 Android SDK 工具版本 14 或更高。

Question

Android SDK 工具：OpenCV 需要 Android SDK 工具版本 14 或更高。

7

我试图使用 Kivy 和 OpenCV 创建一个简单的照片捕捉应用程序。当我尝试使用 buildozer 创建 .apk 文件并在 .spec 文件中将 OpenCV 加入要求时，我遇到了以下错误。

-- 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，我进入了(/home/livon/.buildozer/android/platform/android-sdk)这个文件夹并使用以下命令进行了更新：

sudo apt-get upgrade

但是在更新到30.0.0版本后，没有任何变化，错误仍然存在。

我使用的环境包括：

Ubuntu 19.10
Python 3.7.5
Kivy 1.11.1
Buildozer 1.2.0
OpenCV 4

- Mohammad Al-Amin

1个回答

网页内容由stack overflow 提供, 点击上面的

可以查看英文原文，
原文链接

- Paul Lam · Accepted Answer

我也遇到了这个错误，苦恼了很长时间 :(

经过一系列的谷歌搜索，我找到了一些可能有用的解决方案。

至少在我的Ubuntu 20.04虚拟机上可以使用。

（按照下载Android Studio和复制粘贴dir部分的说明（最后3步）可能会解决您的问题，因为我也遇到了与您相同的错误）

first update apt
```
sudo apt-get update
```
upgrade pkgs
```
sudo apt-get upgrade
```

install python3 + pip

sudo apt-get install python3 python3-pip

config default Python version ( ref_1 ) ( ref_2 )

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

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

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

install kivy

through apt
```
sudo apt-get install python3-kivy
```
through Python pip ( my preferred way )
```
python3 -m pip install kivy==2.0.0
```

install cython

pip3 install Cython
sudo apt-get install cython

// I do it in this way

install javac

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

check if java and javac are installed
```
java -version
javac -version
```

config. java + javac ( I config. it to openjdk8-jdk )

sudo update-alternatives --config java

sudo update-alternatives --config javac

install cmake ( I did both of it ) ( ref )

python way
```
pip3 install cmake
```

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

install buildozer ( I reinstalled it using the official way )

official way

pip3 install --user --upgrade buildozer

through git clone

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

install Python IDLE ( optional ) ( either one of the following )
```
sudo apt-get install idle3
```
install Android Studio

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

After that, just close it
after everything is set up : ( ref )

open file

copy the tools dir located in ~/Home/Android/Sdk/

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 )

then go to ~/Home/.buildozer/android/platform/android-sdk/tools/bin and open in terminal
```
./sdkmanager --install "tools"
exit
```

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 will be available in bin

我的buildozer.spec文件：

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

参考资料

注意

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.

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

希望这能帮到您（如果您发现任何错误，请纠正）。