我已经尝试构建一个kivy文本到语音的pdf阅读器，它在我的Ubuntu 14.04 LTS上运行完美，并且使用buildozer编译时也没有错误。但是Android应用程序启动和关闭时没有任何显示选择。这是应用程序main.py和buildozer.spec以及使用logcat的错误日志。
main.py -
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
import os
from plyer import notification, tts
#setup graphics
from kivy.config import Config
Config.set('graphics','resizable',0)
from kivy.lang import Builder
from pdfminer.pdfinterp import PDFResourceManager, PDFPageInterpreter
from pdfminer.converter import TextConverter
from pdfminer.layout import LAParams
from pdfminer.pdfpage import PDFPage
from cStringIO import StringIO
Builder.load_string("""
<MyWidget>:
id: my_widget
FileChooserListView:
id: filechooser
on_selection: my_widget.talk(filechooser.selection)
""")
class MyWidget(BoxLayout):
def open(self, path, filename):
with open(os.path.join(path, filename[0])) as f:
print f.read()
def selected(self, filename):
print "selected: %s" % filename[0]
def notify(self):
try:
#this notification will pop up on ubuntu as well!'
notification.notify(title="Kivy Notification",message="Plyer Up and Running!",
app_name="kivy_test",app_icon="icon.png",timeout=10)
except:
print 'error notifiying'
def talk(self,file_path):
try:
tts.speak(message=self.convert_pdf_to_txt(file_path[0]))
except:
print 'cant talk'
def convert_pdf_to_txt(self,path):
rsrcmgr = PDFResourceManager()
retstr = StringIO()
codec = 'utf-8'
laparams = LAParams()
device = TextConverter(rsrcmgr, retstr, codec=codec, laparams=laparams)
fp = file(path, 'rb')
interpreter = PDFPageInterpreter(rsrcmgr, device)
password = ""
maxpages = 0
caching = True
pagenos=set()
for page in PDFPage.get_pages(fp, pagenos, maxpages=maxpages, password=password,caching=caching, check_extractable=True):
interpreter.process_page(page)
text = retstr.getvalue()
fp.close()
device.close()
retstr.close()
return text
class MyApp(App):
def build(self):
return MyWidget()
if __name__ == '__main__':
MyApp().run()
这是规范文件
buildozer.spec -
[app]
# (str) Title of your application
title = My First Application
# (str) Package name
package.name = MyApp
# (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) 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.regex = __version__ = ['"](.*)['"]
#version.filename = %(source.dir)s/main.py
# (str) Application versioning (method 2)
version = 1.2.0
# (list) Application requirements
# comma seperated e.g. requirements = sqlite3,kivy
requirements = kivy,plyer,pdfminer
# (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, portrait or all)
orientation = landscape
# (bool) Indicate if the application should be fullscreen or not
fullscreen = 1
#
# Android specific
#
# (list) Permissions
#android.permissions = INTERNET
# (int) Android API to use
#android.api = 14
# (int) Minimum API required (8 = Android 2.2 devices)
#android.minapi = 8
# (int) Android SDK version to use
#android.sdk = 21
# (str) Android NDK version to use
#android.ndk = 9c
# (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) python-for-android git clone directory (if empty, it will be automatically cloned from github)
#android.p4a_dir =
# (list) python-for-android whitelist
#android.p4a_whitelist =
# (str) Android entry point, default is ok for Kivy-based app
#android.entrypoint = org.renpy.android.PythonActivity
# (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 =
# (str) python-for-android branch to use, if not master, useful to try
# not yet merged features.
#android.branch = master
# (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 =
# (list) Android additionnal 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_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 =
#
# iOS specific
#
# (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
# ----------------------------------------------------------------- ------------
# 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
答案 0 :(得分：1)
我在使用pdfminer时遇到了类似问题。帮助我的是改变了如何导入不同的pdfminer模块。
from pdfminer import pdfinterp
from pdfminer import converter
from pdfminer import layout
from pdfminer import pdfpage
我也用过
from io import IOString
当您导入整个模块而不是一两个类时，您也必须在代码中进行更改。
rsrcmgr = pdfinterp.PDFResourceManager()
laparams = layout.LAParams()
device = converter.TextConverter(rsrcmgr, retstr, codec=codec, laparams=laparams)
interpreter = pdfinterp.PDFPageInterpreter(rsrcmgr, device)
for page in pdfpage.PDFPage.get_pages(fp, pagenos, maxpages=maxpages,password=password,caching=caching, check_extractable=True):
interpreter.process_page(page)
text = retstr.getvalue()
此外，您的buildozer规格更改
# (list) Application requirements
# comma seperated e.g. requirements = sqlite3,kivy
requirements = kivy,plyer,pdfminer.six
这可能不会改变plyer的错误，但对我来说，它解决了pdfminer的问题。