kivy开发安卓应用

Kivy是一个跨平台的Python框架，可以用于开发移动应用程序。下面是使用Kivy开发安卓应用的步骤：

1.安装Kivy和必要的依赖项

在开始之前，需要安装Kivy和必要的依赖项。可以使用以下命令在Linux系统上安装：

sudo add-apt-repository ppa:kivy-team/kivy
sudo apt-get update
sudo apt-get install python3-kivy

在Windows系统上，可以使用以下命令安装：

pip install kivy

2.创建应用程序

创建一个名为main.py的Python文件，并在其中编写应用程序的代码。以下是一个简单的示例：

from kivy.app import App
from kivy.uix.button import Button

class TestApp(App):
    def build(self):
        return Button(text='Hello Kivy')
TestApp().run()

这个应用程序将创建一个按钮，上面写着“Hello Kivy”。

3.构建APK文件

要将应用程序打包为APK文件，可以使用Buildozer工具。Buildozer是一个命令行工具，可以自动构建Android APK文件。以下是构建APK文件的步骤：

- 安装Buildozer

pip install buildozer

- 创建buildozer.spec文件

在应用程序的根目录中创建一个名为buildozer.spec的文件，并将以下内容添加到文件中：

[app]

# (str) Title of your application
title = Test App

# (str) Package name
package.name = testapp

# (str) Package domain (needed for android/ios packaging)
package.domain = org.test

# (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

# (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 = 0.1

# (str) Application versioning (method 2)
# version.regex = __version__ = ['"](.*)['"]
# version.filename = %(source.dir)s/main.py

# (list) Application requirements
# comma separated e.g. requirements = sqlite3,kivy
requirements = kivy

# (str) Custom source folders for requirements
# Sets custom source for any requirements with recipes
# requirements.source.kivy = ../../kivy

# (list) Garden requirements
#garden_requirements =

# (str) Presplash of the application
#presplash.filename = %(source.dir)s/data/presplash.png

# (str) Icon of the application
#icon.filename = %(source.dir)s/data/icon.png

# (str) Supported orientation (one of landscape, sensorLandscape, portrait or all)
orientation = portrait

# (bool) Indicate if the application should be fullscreen or not
fullscreen = 0

# (bool) Allow the application to be run in background
#run_on_background = 1

# (str) The default orientation you want for you tablet/left phone
#android.physical_buttons = auto

# (list) Permissions
#android.permissions = INTERNET

# (int) Target Android API, should be as high as possible.
#android.api = 27

# (int) Minimum API your APK will support.
#android.minapi = 21

# (int) Android SDK version to use
#android.sdk = 20

# (str) Android NDK version to use
#android.ndk = 19b

# (bool) Use --private data storage (True) or --dir public storage (False)
#android.private_storage = True

# (str) Android NDK directory (if empty, it will be automatically downloaded.)
#android.ndk_path =

# (str) Android SDK directory (if empty, it will be automatically downloaded.)
#android.sdk_path =

# (str) ANT directory (if empty, it will be automatically downloaded.)
#android.ant_path =

# (bool) If True, then skip trying to update the Android sdk
# This can be useful to avoid excess Internet downloads or save time
# when an update is due and you just want to test/build your package
#android.skip_update = False

# (bool) If True, then automatically accept SDK license
# agreements. This is intended for automation only. If set to False,
# the default, you will be shown the license when first running
# buildozer.
#android.accept_sdk_license = False

# (str) Android entry point, default is ok for Kivy-based app
#android.entrypoint = org.renpy.android.PythonActivity

# (str) Android app theme, default is ok for Kivy-based app
#android.theme = '@android:style/Theme.NoTitleBar'

# (str) Android logcat filters to use
#android.logcat_filters = *:S python:D

# (bool) Copy library instead of making a libpymodules.so
#android.copy_libs = 1

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

# (str) Sequence of toolchain to use, chooses the first one that exists.
# toolchain = arm-linux-androideabi-4.4.3
#           = arm-linux-androideabi-4.6
#           = arm-linux-androideabi-4.8
#           = arm-linux-androideabi-clang (not recommended)
#android.toolchain = arm-linux-androideabi-4.9

# (str) ndk-stack tool path
#android.ndk_stack = $(NDK_HOME)/prebuilt/android-arm/bin/ndk-stack

# (int) Number of automatic backup to keep before auto-deleting.
#android.backup_age = 5

# (int) Maximum size of the cache before deleting.
#android.cache_size = 500

# (int) Minimum heap size required for the JVM, expressed in MB.
#android.min_heap_size = 32

# (int) Minimum stack size for the JVM, expressed in MB.
#android.min_stack_size = 16

# (str) Application needs to be compiled with python-for-android, this is the
# name of the dist name to use.
#android.dist_name = myapp

# (str) Gradle dependencies to add (can be a list or string)
#android.gradle_dependencies =

# (list) add java compile options
# this can for example be necessary when importing certain libraries
# that would otherwise crash with an error like "Unknown option '--output-file'"
#android.add_compile_options = --output-file

# (str) Java class to extend
#android.java_class = org.kivy.android.PythonActivity

# (list) Java jars to add (use a wildcard to include all jars - beware of duplicates!)
#android.add_jars = foo.jar,bar.jar

# (str) Java jar dependencies to add (comma separated, no wildcard)
#android.gradle_dependencies = 'com.android.support:support-core-utils:27.1.1'

# (list) Java files to add (can be java or a kv file)
#android.add_java_files = my_file.java, another_file.kv

# (str) AAR dependencies to add (Android Archives - only works with SDL2 bootstrap currently)
#android.add_aars = mydependency.aar

# (list) Gradle repositories to include AAR from
#android.gradle_repositories = mavenCentral()

# (str) Kotlin class to extend (can be empty)
#android.kotlin_class = ''

# (list) Kotlin source files to add (can be empty)
#android.add_kotlin_files = my_file.kt, another_file.kt

# (list) Gradle repositories to include Kotlin from
#android.gradle_dependencies = 'org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.61'

# (list) Android additional libraries to copy into libs/armeabi-v7a
#android.add_libs_armeabi_v7a = libs/android.so

# (list) Android additional libraries to copy into libs/arm64-v8a
#android.add_libs_arm64_v8a = libs/android64.so

# (list) Android additional libraries to copy into libs/x86
#android.add_libs_x86 = libs/androidx86.so

# (list) Android additional libraries to copy into libs/x86_64
#android.add_libs_x86_64 = libs/androidx8664.so

# (list) Android additional libraries to copy into libs/mips
#android.add_libs_mips = libs/androidmips.so

# (list) Android additional libraries to copy into libs/mips64
#android.add_libs_mips64 = libs/androidmips64.so

# (list) Android additional libraries to copy into libs/armeabi
#android.add_libs_armeabi = libs/androidarm.so

# (list) Android additional libraries to copy into libs/armeabi-v7a
#android.add_libs_armeabi_v7a = libs/androidarmv7.so

# (list) Android additional libraries to copy into libs/arm64-v8a
#android.add_libs_arm64_v8a = libs/androidarm64v8a.so

# (list) Android additional libraries to copy into libs/x86
#android.add_libs_x86 = libs/androidx86.so

# (list) Android additional libraries to copy into libs/x86_64
#android.add_libs_x86_64 = libs/androidx8664.so

# (list) Android additional libraries to copy into libs/mips
#android.add_libs_mips = libs/androidmips.so

# (list) Android additional libraries to copy into libs/mips64
#android.add_libs_mips64 = libs/androidmips64.so

# (list) Android services to declare
#android.services = myservice:org.test.MyService

# (list) Android plugins to include
#android.plugins = pyjnius, android

# (str) Android logcat filters to use by default
#android.logcat_filters = *:S python:D

# (bool) Copy library instead of making a libpymodules.so
#android.copy_libs = 1

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

# (str) Sequence of toolchain to use, chooses the first one that exists.
# toolchain = arm-linux-androideabi-4.4.3
#           = arm-linux-androideabi-4.6
#           = arm-linux-androideabi-4.8
#           = arm-linux-androideabi-clang (not recommended)
#android.toolchain = arm-linux-androideabi-4.9

# (str) ndk-stack tool path
#android.ndk_stack = $(NDK_HOME)/prebuilt/android-arm/bin/ndk-stack

# (int) Number of automatic backup to keep before auto-deleting.
#android.backup_age = 5

# (int) Maximum size of the cache before deleting.
#android.cache_size = 500

# (int) Minimum heap size required for the JVM, expressed in MB.
#android.min_heap_size = 32

# (int) Minimum stack size for the JVM, expressed in MB.
#android.min_stack_size = 16

# (str) Application needs to be compiled with python-for-android, this is the
# name of the dist name to use.
#android.dist_name = myapp

# (str) Gradle dependencies to add (can be a list or string)
#android.gradle_dependencies =

# (list) add java compile options
# this can for example be necessary when importing certain libraries
# that would otherwise crash with an error like "Unknown option '--output-file'"
#android.add_compile_options = --output-file

# (str) Java class to extend
#android.java_class = org.kivy.android.PythonActivity

# (list) Java jars to add (use a wildcard to include all jars - beware of duplicates!)
#android.add_jars = foo.jar,bar.jar

# (str) Java jar dependencies to add (comma separated, no wildcard)
#android.gradle_dependencies = 'com.android.support:support-core-utils:27.1.1'

# (list) Java files to add (can be java or a kv file)
#android.add_java_files = my_file.java, another_file.kv

# (str) AAR dependencies to add (Android Archives - only works with SDL2 bootstrap currently)
#android.add_aars = mydependency.aar

# (list) Gradle repositories to include AAR from
#android.gradle_repositories = mavenCentral()

# (str) Kotlin class to extend (can be empty)
#android.kotlin_class = ''

# (list) Kotlin source files to add (can be empty)
#android.add_kotlin_files = my_file.kt, another_file.kt

# (list) Gradle repositories to include Kotlin from
#android.gradle_dependencies = 'org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.61'

# (list) Android additional libraries to copy into libs/armeabi-v7a
#android.add_libs_armeabi_v7a = libs/android.so

# (list) Android additional libraries to copy into libs/arm64-v8a
#android.add_libs_arm64_v8a = libs/android64