即使在笔记本电脑上播放良好，Kivy 声音也无法在 Android 设备上播放
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【中文标题】即使在笔记本电脑上播放良好，Kivy 声音也无法在 Android 设备上播放【英文标题】：Kivy sounds do not play on android device even though they play fine on laptop 【发布时间】：2021-01-08 20:45:05 【问题描述】：我正在尝试使用 Kivy 播放声音。声音播放完美，在我的笔记本电脑上一切正常，但是当我在我的 android 设备上加载 APK 时，声音无法播放。
我已经在我的 android 设备上手动允许“存储权限”，并且在我的 buildozer.spec 文件中我包含了写入和读取外部存储的权限。我创建了一个测试文件来尝试调试以查看出了什么问题，但无济于事。我将在下面分享这个测试文件的详细信息。
首先，这里是 .py 文件：
import kivy
from kivy.app import App
from kivy.uix.widget import Widget
from kivy.graphics import Color
from kivy.core.audio import SoundLoader
__version__ = '0.1'
class SoundTestApp(App):
def build(self):
self.load_kv('soundtest.kv')
return SoundTestWidget()
class SoundTestWidget(Widget):
def playsound(self):
sound = SoundLoader.load('testmusic.wav')
sound.play()
SoundTestApp().run()
接下来，这里是.kv文件：
<SoundTestWidget>:
soundbutton: sound_button
Button:
id: sound_button
size: (root.width,root.height)
background_color: (1, 0, 0, 1)
text: "press to play music"
pos: self.pos
on_release:
self.text = "music is playing"
root.playsound()
接下来，这里是 Buildozer.spec 文件：
[app]
# (str) Title of your application
title = SoundTest
# (str) Package name
package.name = soundtest
# (str) Package domain (needed for android/ios packaging)
package.domain = org.soundtest
# (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 = python3,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 = landscape
# (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 = 0
# (string) Presplash background color (for new android toolchain)
# Supported formats are: #RRGGBB #AARRGGBB or one of the following names:
# red, blue, green, black, white, gray, cyan, magenta, yellow, lightgray,
# darkgray, grey, lightgrey, darkgrey, aqua, fuchsia, lime, maroon, navy,
# olive, purple, silver, teal.
#android.presplash_color = #FFFFFF
# (list) Permissions
android.permissions = INTERNET, WRITE_EXTERNAL_STORAGE, READ_EXTERNAL_STORAGE
# (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
# (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
# (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.apptheme = "@android:style/Theme.NoTitleBar"
# (list) Pattern to whitelist for the whole project
#android.whitelist =
# (str) Path to a custom whitelist file
#android.whitelist_src =
# (str) Path to a custom blacklist file
#android.blacklist_src =
# (list) List of Java .jar files to add to the libs so that pyjnius can access
# their classes. Don't add jars that you do not need, since extra jars can slow
# down the build process. Allows wildcards matching, for example:
# OUYA-ODK/libs/*.jar
#android.add_jars = foo.jar,bar.jar,path/to/more/*.jar
# (list) List of Java files to add to the android project (can be java or a
# directory containing the files)
#android.add_src =
# (list) Android AAR archives to add (currently works only with sdl2_gradle
# bootstrap)
#android.add_aars =
# (list) Gradle dependencies to add (currently works only with sdl2_gradle
# bootstrap)
#android.gradle_dependencies =
# (list) add java compile options
# this can for example be necessary when importing certain java libraries using the 'android.gradle_dependencies' option
# see https://developer.android.com/studio/write/java8-support for further information
# android.add_compile_options = "sourceCompatibility = 1.8", "targetCompatibility = 1.8"
# (list) Gradle repositories to add can be necessary for some android.gradle_dependencies
# please enclose in double quotes
# e.g. android.gradle_repositories = "maven url 'https://kotlin.bintray.com/ktor' "
#android.add_gradle_repositories =
# (list) packaging options to add
# see https://google.github.io/android-gradle-dsl/current/com.android.build.gradle.internal.dsl.PackagingOptions.html
# can be necessary to solve conflicts in gradle_dependencies
# please enclose in double quotes
# e.g. android.add_packaging_options = "exclude 'META-INF/common.kotlin_module'", "exclude 'META-INF/*.kotlin_module'"
#android.add_gradle_repositories =
# (list) Java classes to add as activities to the manifest.
#android.add_activities = com.example.ExampleActivity
# (str) OUYA Console category. Should be one of GAME or APP
# If you leave this blank, OUYA support will not be enabled
#android.ouya.category = GAME
# (str) Filename of OUYA Console icon. It must be a 732x412 png image.
#android.ouya.icon.filename = %(source.dir)s/data/ouya_icon.png
# (str) XML file to include as an intent filters in <activity> tag
#android.manifest.intent_filters =
# (str) launchMode to set for the main activity
#android.manifest.launch_mode = standard
# (list) Android additional libraries to copy into libs/armeabi
#android.add_libs_armeabi = libs/android/*.so
#android.add_libs_armeabi_v7a = libs/android-v7/*.so
#android.add_libs_arm64_v8a = libs/android-v8/*.so
#android.add_libs_x86 = libs/android-x86/*.so
#android.add_libs_mips = libs/android-mips/*.so
# (bool) Indicate whether the screen should stay on
# Don't forget to add the WAKE_LOCK permission if you set this to True
#android.wakelock = False
# (list) Android application meta-data to set (key=value format)
#android.meta_data =
# (list) Android library project to add (will be added in the
# project.properties automatically.)
#android.library_references =
# (list) Android shared libraries which will be added to AndroidManifest.xml using <uses-library> tag
#android.uses_library =
# (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
android.arch = armeabi-v7a
# (int) overrides automatic versionCode computation (used in build.gradle)
# this is not the same as app version and should only be edited if you know what you're doing
# android.numeric_version = 1
#
# Python for android (p4a) specific
#
# (str) python-for-android fork to use, defaults to upstream (kivy)
#p4a.fork = kivy
# (str) python-for-android branch to use, defaults to master
#p4a.branch = master
# (str) python-for-android git clone directory (if empty, it will be automatically cloned from github)
#p4a.source_dir =
# (str) The directory in which python-for-android should look for your own build recipes (if any)
#p4a.local_recipes =
# (str) Filename to the hook for p4a
#p4a.hook =
# (str) Bootstrap to use for android builds
# p4a.bootstrap = sdl2
# (int) port number to specify an explicit --port= p4a argument (eg for bootstrap flask)
#p4a.port =
#
# iOS specific
#
# (str) Path to a custom kivy-ios folder
#ios.kivy_ios_dir = ../kivy-ios
# Alternately, specify the URL and branch of a git checkout:
ios.kivy_ios_url = https://github.com/kivy/kivy-ios
ios.kivy_ios_branch = master
# Another platform dependency: ios-deploy
# Uncomment to use a custom checkout
#ios.ios_deploy_dir = ../ios_deploy
# Or specify URL and branch
ios.ios_deploy_url = https://github.com/phonegap/ios-deploy
ios.ios_deploy_branch = 1.7.0
# (str) Name of the certificate to use for signing the debug version
# Get a list of available identities: buildozer ios list_identities
#ios.codesign.debug = "iPhone Developer: <lastname> <firstname> (<hexstring>)"
# (str) Name of the certificate to use for signing the release version
#ios.codesign.release = %(ios.codesign.debug)s
[buildozer]
# (int) Log level (0 = error only, 1 = info, 2 = debug (with command output))
log_level = 2
# (int) Display warning if buildozer is run as root (0 = False, 1 = True)
warn_on_root = 1
# (str) Path to build artifact storage, absolute or relative to spec file
# build_dir = ./.buildozer
# (str) Path to build output (i.e. .apk, .ipa) storage
# bin_dir = ./bin
# -----------------------------------------------------------------------------
# List as sections
#
# You can define all the "list" as [section:key].
# Each line will be considered as a option to the list.
# Let's take [app] / source.exclude_patterns.
# Instead of doing:
#
#[app]
#source.exclude_patterns = license,data/audio/*.wav,data/images/original/*
#
# This can be translated into:
#
#[app:source.exclude_patterns]
#license
#data/audio/*.wav
#data/images/original/*
#
# -----------------------------------------------------------------------------
# Profiles
#
# You can extend section / key with a profile
# For example, you want to deploy a demo version of your application without
# HD content. You could first change the title to add "(demo)" in the name
# and extend the excluded directories to remove the HD content.
#
#[app@demo]
#title = My Application (demo)
#
#[app:source.exclude_patterns@demo]
#images/hd/*
#
# Then, invoke the command line with the "demo" profile:
#
#buildozer --profile demo android debug
最后，这里有一些 logcat 的摘录，可能相关也可能不相关（我还不知道如何正确阅读 logcat）：
09-22 22:24:52.558 6029 1471 E pageboostd: orgsoundtestsoundtest, amt 0 scnt 0 fcnt 0
09-22 22:24:52.559 4865 5176 E ActivityTaskManager: TouchDown intent received, starting ActiveLaunch
09-22 22:24:52.560 4865 5176 I ApplicationPolicy: isApplicationExternalStorageWhitelisted:org.soundtest.soundtest user:0
09-22 22:24:52.560 4865 5176 D ApplicationPolicy: isApplicationExternalStorageWhitelisted: DO is not enabled on user 0. Allowed.
09-22 22:24:52.560 4865 5176 D ActivityManager: package org.soundtest.soundtest, user - 0 is SDcard whitelisted
09-22 22:24:52.560 4865 5176 I ApplicationPolicy: isApplicationExternalStorageBlacklisted:org.soundtest.soundtest user:0
09-22 22:24:52.560 4865 5176 D ApplicationPolicy: isApplicationExternalStorageBlacklisted: DO is not enabled on user 0. Allowed.
09-22 22:24:52.561 4865 5176 I ApplicationPolicy: isApplicationExternalStorageBlacklisted:org.soundtest.soundtest user:0
09-22 22:24:52.561 4865 5176 D ApplicationPolicy: isApplicationExternalStorageBlacklisted: DO is not enabled on user 0. Allowed.
09-22 22:24:52.561 4865 5176 D ActivityTaskManager: starting Active launch
09-22 22:19:24.770 4865 5191 I Pageboost: active launch for : org.soundtest.soundtest , 1
09-22 22:19:24.772 4865 5176 E ActivityTaskManager: TouchDown intent received, starting ActiveLaunch
09-22 22:19:24.772 4865 5176 D ActivityTaskManager: starting Active launch
09-22 22:19:24.837 4865 6989 D CustomFrequencyManagerService: acquireDVFSLockLocked : type : DVFS_MIN_LIMIT frequency : 2314000 uid : 1000 pid : 4865 pkgName : APP_LAUNCH@CPU_MIN@7
09-22 22:19:24.837 5574 5574 D ActivityOptions: makeRemoteAnimation, adapter=android.view.RemoteAnimationAdapter@5d434e1, caller=com.android.systemui.shared.system.ActivityOptionsCompat.makeRemoteAnimation:68 com.android.launcher3.QuickstepAppTransitionManagerImpl.getActivityLaunchOptions:350 com.android.launcher3.Launcher.getActivityLaunchOptions:3071
09-22 22:19:24.840 4865 6997 I ActivityTaskManager: START u0 act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=org.soundtest.soundtest/org.kivy.android.PythonActivity bnds=[975,120][1156,451] from uid 10073
09-22 22:19:24.841 6953 6953 E SDHMS:ib.qa: e = /sys/class/lcd/panel/vrr: open failed: ENOENT (No such file or directory)
09-22 22:19:24.846 4865 6997 D CustomFrequencyManagerService: acquireDVFSLockLocked : type : DVFS_MIN_LIMIT frequency : 2314000 uid : 1000 pid : 4865 pkgName : AMS_APP_SWITCH@CPU_MIN@38
09-22 22:19:24.846 4865 6997 D ActivityManagerPerformance: AMP_acquire() APP_SWITCH
09-22 22:19:24.846 4865 6997 D ActivityTaskManager: MultiTaskingTaskLaunchParamsModifier:task=null display-from-source=0 display-id=0 display-windowing-mode=1
09-22 22:19:24.847 4865 6997 D ActivityTaskManager: MultiTaskingTaskLaunchParamsModifier:task=null display-from-source=0 display-id=0 display-windowing-mode=1 activity-options-fullscreen=Rect(0, 0 - 0, 0) non-freeform-display maximized-bounds
09-22 22:19:24.849 4865 6997 D ActivityTaskManager: MultiTaskingTaskLaunchParamsModifier:tid=340 display-from-task=0 display-id=0 display-windowing-mode=1 activity-options-fullscreen=Rect(0, 0 - 0, 0) non-freeform-display maximized-bounds
09-22 22:19:24.850 4865 6997 D ActivityTaskManager: updateMinimizedState: unknown notifyReason=2
09-22 22:19:24.855 4865 4906 D GameManagerService: MultiWindowEventListener.onFocusStackChanged(), state=0, top=ComponentInfoorg.soundtest.soundtest/org.kivy.android.PythonActivity
09-22 22:19:24.855 4865 5173 D GameManagerService: handleForegroundChange(). pkgName: org.soundtest.soundtest, clsName: org.kivy.android.PythonActivity,FgActivityName:org.soundtest.soundtest/org.kivy.android.PythonActivity,userID:0
09-22 22:19:24.855 4865 5173 D GameManagerService: handleForegroundChange(). set mFgApp: org.soundtest.soundtest
09-22 22:19:24.855 4865 5173 D GameManagerService: notifyResumePause(). pkg: org.soundtest.soundtest, type: 4, isMinimized: false, isTunableApp: false
09-22 22:19:24.856 4865 5173 D GameManagerService: notifyResumePause(). do nothing. mKillNotiCount: 1
09-22 22:19:24.856 4865 4906 D GameSDKService: MultiWindowEventListener.onFocusStackChanged(), state=0, top=ComponentInfoorg.soundtest.soundtest/org.kivy.android.PythonActivity
09-22 22:19:24.857 4865 4906 D GameSDKService: MultiWindowEventListener.onFocusStackChanged(): org.soundtest.soundtest
09-22 22:19:24.857 4865 4906 D MdnieScenarioControlService: MultiWindowState : false , mode : 0
09-22 22:19:24.858 4865 4865 I Pageboost: package org.soundtest.soundtest
09-22 22:19:24.859 4865 4865 I Pageboost: stop active launch
该应用在 Android 上不会崩溃。但声音不播放。有什么问题？
编辑：
感谢下面的回答，我们意识到问题很可能是我需要添加需求ffpyplayer。但是，当我添加此要求时，buildozer 会拒绝构建。这是日志：
[INFO]: -> running configure --disable-everything --enable-openssl --enable-nonfree --enable-protocol=https,tls_op...(and 891 more)
Exception in thread background thread for pid 33867:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/threading.py", line 917, in _bootstrap_inner
self.run()
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/threading.py", line 865, in run
self._target(*self._args, **self._kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sh.py", line 1662, in wrap
fn(*args, **kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sh.py", line 2606, in background_thread
handle_exit_code(exit_code)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sh.py", line 2304, in fn
return self.command.handle_command_exit_code(exit_code)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sh.py", line 877, in handle_command_exit_code
raise exc
sh.ErrorReturnCode_1:
RAN: /Users/maithreyasitaraman/Downloads/2_Sound_Test/.buildozer/android/platform/build-armeabi-v7a/build/other_builds/ffmpeg/armeabi-v7a__ndk_target_21/ffmpeg/configure --disable-everything --enable-openssl --enable-nonfree --enable-protocol=https,tls_openssl --enable-parser=aac,ac3,h261,h264,mpegaudio,mpeg4video,mpegvideo,vc1 --enable-decoder=aac,h264,mpeg4,mpegvideo --enable-muxer=h264,mov,mp4,mpeg2video --enable-demuxer=aac,h264,m4v,mov,mpegvideo,vc1 --disable-symver --disable-programs --disable-doc --enable-filter=aresample,resample,crop,adelay,volume,scale --enable-protocol=file,http,hls --enable-small --enable-hwaccels --enable-gpl --enable-pic --disable-static --disable-debug --enable-shared --target-os=android --enable-cross-compile --cross-prefix=armv7a-linux-androideabi21- --arch=arm --strip=arm-linux-androideabi-strip --sysroot=/Users/maithreyasitaraman/.buildozer/android/platform/android-ndk-r19c/toolchains/llvm/prebuilt/linux-x86_64/sysroot --enable-neon --prefix=/Users/maithreyasitaraman/Downloads/2_Sound_Test/.buildozer/android/platform/build-armeabi-v7a/build/other_builds/ffmpeg/armeabi-v7a__ndk_target_21/ffmpeg
STDOUT:
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
armv7a-linux-androideabi21-clang is unable to create an executable file.
C compiler test failed.
If you think configure made a mistake, make sure you are using the latest
version from Git. If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "ffbuild/config.log" produced by configure as this will help
solve the problem.
STDERR:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/Users/maithreyasitaraman/Downloads/2_Sound_Test/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 1260, in <module>
main()
File "/Users/maithreyasitaraman/Downloads/2_Sound_Test/.buildozer/android/platform/python-for-android/pythonforandroid/entrypoints.py", line 18, in main
ToolchainCL()
File "/Users/maithreyasitaraman/Downloads/2_Sound_Test/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 709, in __init__
getattr(self, command)(args)
File "/Users/maithreyasitaraman/Downloads/2_Sound_Test/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 154, in wrapper_func
build_dist_from_args(ctx, dist, args)
File "/Users/maithreyasitaraman/Downloads/2_Sound_Test/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 216, in build_dist_from_args
args, "ignore_setup_py", False
File "/Users/maithreyasitaraman/Downloads/2_Sound_Test/.buildozer/android/platform/python-for-android/pythonforandroid/build.py", line 577, in build_recipes
recipe.build_arch(arch)
File "/Users/maithreyasitaraman/Downloads/2_Sound_Test/.buildozer/android/platform/python-for-android/pythonforandroid/recipes/ffmpeg/__init__.py", line 135, in build_arch
shprint(configure, *flags, _env=env)
File "/Users/maithreyasitaraman/Downloads/2_Sound_Test/.buildozer/android/platform/python-for-android/pythonforandroid/logger.py", line 167, in shprint
for line in output:
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sh.py", line 925, in next
self.wait()
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sh.py", line 849, in wait
self.handle_command_exit_code(exit_code)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sh.py", line 877, in handle_command_exit_code
raise exc
sh.ErrorReturnCode_1:
RAN: /Users/maithreyasitaraman/Downloads/2_Sound_Test/.buildozer/android/platform/build-armeabi-v7a/build/other_builds/ffmpeg/armeabi-v7a__ndk_target_21/ffmpeg/configure --disable-everything --enable-openssl --enable-nonfree --enable-protocol=https,tls_openssl --enable-parser=aac,ac3,h261,h264,mpegaudio,mpeg4video,mpegvideo,vc1 --enable-decoder=aac,h264,mpeg4,mpegvideo --enable-muxer=h264,mov,mp4,mpeg2video --enable-demuxer=aac,h264,m4v,mov,mpegvideo,vc1 --disable-symver --disable-programs --disable-doc --enable-filter=aresample,resample,crop,adelay,volume,scale --enable-protocol=file,http,hls --enable-small --enable-hwaccels --enable-gpl --enable-pic --disable-static --disable-debug --enable-shared --target-os=android --enable-cross-compile --cross-prefix=armv7a-linux-androideabi21- --arch=arm --strip=arm-linux-androideabi-strip --sysroot=/Users/maithreyasitaraman/.buildozer/android/platform/android-ndk-r19c/toolchains/llvm/prebuilt/linux-x86_64/sysroot --enable-neon --prefix=/Users/maithreyasitaraman/Downloads/2_Sound_Test/.buildozer/android/platform/build-armeabi-v7a/build/other_builds/ffmpeg/armeabi-v7a__ndk_target_21/ffmpeg
STDOUT:
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
armv7a-linux-androideabi21-clang is unable to create an executable file.
C compiler test failed.
If you think configure made a mistake, make sure you are using the latest
version from Git. If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "ffbuild/config.log" produced by configure as this will help
solve the problem.
STDERR:
【问题讨论】：
【参考方案1】：应该有播放声音所需的权限。 Android中的权限列表可以在here找到。然后您需要在 buildozer.spec 文件和代码中指定该权限：
from android.permissions import request_permissions, Permission
request_permissions([Permission.the_permission_you_want])
更新的 Buildozer 规范文件：
[app]
# (str) Title of your application
title = SoundTest
# (str) Package name
package.name = soundtest
# (str) Package domain (needed for android/ios packaging)
package.domain = org.soundtest
# (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,wav
# (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 = python3,kivy,python-for-android
# (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 = landscape
# (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 = 0
# (string) Presplash background color (for new android toolchain)
# Supported formats are: #RRGGBB #AARRGGBB or one of the following names:
# red, blue, green, black, white, gray, cyan, magenta, yellow, lightgray,
# darkgray, grey, lightgrey, darkgrey, aqua, fuchsia, lime, maroon, navy,
# olive, purple, silver, teal.
#android.presplash_color = #FFFFFF
# (list) Permissions
android.permissions = INTERNET, WRITE_EXTERNAL_STORAGE, READ_EXTERNAL_STORAGE
# (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
# (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
# (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.apptheme = "@android:style/Theme.NoTitleBar"
# (list) Pattern to whitelist for the whole project
#android.whitelist =
# (str) Path to a custom whitelist file
#android.whitelist_src =
# (str) Path to a custom blacklist file
#android.blacklist_src =
# (list) List of Java .jar files to add to the libs so that pyjnius can access
# their classes. Don't add jars that you do not need, since extra jars can slow
# down the build process. Allows wildcards matching, for example:
# OUYA-ODK/libs/*.jar
#android.add_jars = foo.jar,bar.jar,path/to/more/*.jar
# (list) List of Java files to add to the android project (can be java or a
# directory containing the files)
#android.add_src =
# (list) Android AAR archives to add (currently works only with sdl2_gradle
# bootstrap)
#android.add_aars =
# (list) Gradle dependencies to add (currently works only with sdl2_gradle
# bootstrap)
#android.gradle_dependencies =
# (list) add java compile options
# this can for example be necessary when importing certain java libraries using the 'android.gradle_dependencies' option
# see https://developer.android.com/studio/write/java8-support for further information
# android.add_compile_options = "sourceCompatibility = 1.8", "targetCompatibility = 1.8"
# (list) Gradle repositories to add can be necessary for some android.gradle_dependencies
# please enclose in double quotes
# e.g. android.gradle_repositories = "maven url 'https://kotlin.bintray.com/ktor' "
#android.add_gradle_repositories =
# (list) packaging options to add
# see https://google.github.io/android-gradle-dsl/current/com.android.build.gradle.internal.dsl.PackagingOptions.html
# can be necessary to solve conflicts in gradle_dependencies
# please enclose in double quotes
# e.g. android.add_packaging_options = "exclude 'META-INF/common.kotlin_module'", "exclude 'META-INF/*.kotlin_module'"
#android.add_gradle_repositories =
# (list) Java classes to add as activities to the manifest.
#android.add_activities = com.example.ExampleActivity
# (str) OUYA Console category. Should be one of GAME or APP
# If you leave this blank, OUYA support will not be enabled
#android.ouya.category = GAME
# (str) Filename of OUYA Console icon. It must be a 732x412 png image.
#android.ouya.icon.filename = %(source.dir)s/data/ouya_icon.png
# (str) XML file to include as an intent filters in <activity> tag
#android.manifest.intent_filters =
# (str) launchMode to set for the main activity
#android.manifest.launch_mode = standard
# (list) Android additional libraries to copy into libs/armeabi
#android.add_libs_armeabi = libs/android/*.so
#android.add_libs_armeabi_v7a = libs/android-v7/*.so
#android.add_libs_arm64_v8a = libs/android-v8/*.so
#android.add_libs_x86 = libs/android-x86/*.so
#android.add_libs_mips = libs/android-mips/*.so
# (bool) Indicate whether the screen should stay on
# Don't forget to add the WAKE_LOCK permission if you set this to True
#android.wakelock = False
# (list) Android application meta-data to set (key=value format)
#android.meta_data =
# (list) Android library project to add (will be added in the
# project.properties automatically.)
#android.library_references =
# (list) Android shared libraries which will be added to AndroidManifest.xml using <uses-library> tag
#android.uses_library =
# (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
android.arch = armeabi-v7a
# (int) overrides automatic versionCode computation (used in build.gradle)
# this is not the same as app version and should only be edited if you know what you're doing
# android.numeric_version = 1
#
# Python for android (p4a) specific
#
# (str) python-for-android fork to use, defaults to upstream (kivy)
#p4a.fork = kivy
# (str) python-for-android branch to use, defaults to master
#p4a.branch = master
# (str) python-for-android git clone directory (if empty, it will be automatically cloned from github)
#p4a.source_dir =
# (str) The directory in which python-for-android should look for your own build recipes (if any)
#p4a.local_recipes =
# (str) Filename to the hook for p4a
#p4a.hook =
# (str) Bootstrap to use for android builds
# p4a.bootstrap = sdl2
# (int) port number to specify an explicit --port= p4a argument (eg for bootstrap flask)
#p4a.port =
#
# iOS specific
#
# (str) Path to a custom kivy-ios folder
#ios.kivy_ios_dir = ../kivy-ios
# Alternately, specify the URL and branch of a git checkout:
ios.kivy_ios_url = https://github.com/kivy/kivy-ios
ios.kivy_ios_branch = master
# Another platform dependency: ios-deploy
# Uncomment to use a custom checkout
#ios.ios_deploy_dir = ../ios_deploy
# Or specify URL and branch
ios.ios_deploy_url = https://github.com/phonegap/ios-deploy
ios.ios_deploy_branch = 1.7.0
# (str) Name of the certificate to use for signing the debug version
# Get a list of available identities: buildozer ios list_identities
#ios.codesign.debug = "iPhone Developer: <lastname> <firstname> (<hexstring>)"
# (str) Name of the certificate to use for signing the release version
#ios.codesign.release = %(ios.codesign.debug)s
[buildozer]
# (int) Log level (0 = error only, 1 = info, 2 = debug (with command output))
log_level = 2
# (int) Display warning if buildozer is run as root (0 = False, 1 = True)
warn_on_root = 1
# (str) Path to build artifact storage, absolute or relative to spec file
# build_dir = ./.buildozer
# (str) Path to build output (i.e. .apk, .ipa) storage
# bin_dir = ./bin
# -----------------------------------------------------------------------------
# List as sections
#
# You can define all the "list" as [section:key].
# Each line will be considered as a option to the list.
# Let's take [app] / source.exclude_patterns.
# Instead of doing:
#
#[app]
#source.exclude_patterns = license,data/audio/*.wav,data/images/original/*
#
# This can be translated into:
#
#[app:source.exclude_patterns]
#license
#data/audio/*.wav
#data/images/original/*
#
# -----------------------------------------------------------------------------
# Profiles
#
# You can extend section / key with a profile
# For example, you want to deploy a demo version of your application without
# HD content. You could first change the title to add "(demo)" in the name
# and extend the excluded directories to remove the HD content.
#
#[app@demo]
#title = My Application (demo)
#
#[app:source.exclude_patterns@demo]
#images/hd/*
#
# Then, invoke the command line with the "demo" profile:
#
#buildozer --profile demo android debug
更新的 Python 代码：
import kivy
from kivy.app import App
from kivy.uix.widget import Widget
from kivy.graphics import Color
from kivy.core.audio import SoundLoader
from android.permissions import request_permissions, Permission
request_permissions([Permission.READ_EXTERNAL_STORAGE])
__version__ = '0.1'
class SoundTestApp(App):
def build(self):
self.load_kv('soundtest.kv')
return SoundTestWidget()
class SoundTestWidget(Widget):
def playsound(self):
sound = SoundLoader.load('testmusic.wav')
sound.play()
SoundTestApp().run()
编译前要运行的命令：
buildozer android clean
【讨论】：
如果这不起作用，我会看看here。 不管怎样，我会看那个帖子，因为它正是你想要做的:) 由于我在我的安卓设备上手动打开了权限，这是否解决了您的建议？假设插入上述代码后我无法在笔记本电脑上运行该程序，我是否正确？ （“ModuleNotFoundError：没有名为‘android’的模块”）。进一步注意：很遗憾，您评论中的链接并未提供此问题的解决方案。 您需要在 buildozer 中将python-for-android 添加到您的要求中。然后，添加我上面显示的那行代码。
用找到的here 播放音频的权限替换the_permission_you_want。那应该可以解决您的问题:)【参考方案2】：
我尝试在 Kivy 中为 android 构建一个项目，并遇到了类似的问题，即声音播放在笔记本电脑上运行良好，但在 Android 设备上却不行。
正如我从您的 buildspec 文件中看到的，它不包括以下 ffpyplayer 要求。尝试包括这个并再次干净地重建。希望它能解决您的问题
要求 = python3,kivy,ffpyplayer
【讨论】：
这可能是问题所在。但是，当我添加此要求时，我的 buildozer 无法编译，我目前正试图找出原因。这可能是旧/新版本的某种不兼容。当我可以让 buildozer 编译时，我会回复你。 清理创建的隐藏文件夹并尝试重新构建。我的项目规范的参考 - github.com/novicejava1/python/blob/master/kivy/KivyTesting/… 当我在需求中添加 ffpyplayer 或 ffmpeg 时，buildozer 无法编译:( - 我已经尝试了很多方法让它不会失败，包括重新安装 buildozer 及其依赖项（当然还有清理隐藏文件） - 但无济于事。您是否有任何猜测出了什么问题？当您第一次使用要求编译 buildozer 时，编译是否也失败了？ 我能够在 Android 设备上部署和运行你的声音应用程序，它运行良好。参考 - github.com/novicejava1/python/tree/master/kivy/soundtest 构建规范。如果您将 .wav 文件与 .py 和 .kv 文件放在同一目录中，则需要更新构建规范行以在构建时包含它 ref - novicejava1.blogspot.com/2020/06/… 如果有任何 buildozer 特定的依赖问题并且无法构建任何 apk 本身【参考方案3】：这可能有很多原因。首先，我看不出代码有什么问题，所以目标系统肯定有问题。我建议您检查是否有任何访问（对扬声器）被杀毒软件阻止......这在我过去反复发生过，检查应用程序权限可能是唯一的解决方案。
【讨论】：
谢谢！我认为这不是问题，因为我没有安装任何外部防病毒软件。但是，如果其他方法不起作用，我肯定会做更多的尽职调查，看看这是否是内置安全性的问题。我会在几天内回复您。以上是关于即使在笔记本电脑上播放良好，Kivy 声音也无法在 Android 设备上播放的主要内容，如果未能解决你的问题，请参考以下文章
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