title: Android (Kivy-made) App crashes
body: <p>I am trying to run a program using kivy which tracks a mobile phone or any device using GPS. There's an existing program an I copied it to test it. I ran it using my Macbook Pro, but I just knew that MBP does not have a built-in GPS chip on it. So, I tried to build an apk on my macbook pro using buildozer to test it on my android phone since I don't have an iphone.</p>
  
  <p>Now, building an apk was successful and I installed it on my android phone (ASUS Max), and it crashes. Before I tried the sample program given in kivy and built an apk for it and it run on my android phone. </p>
  
  <p>I ran "buildozer android logcat" and here is the result: 
  <a href="https://i.stack.imgur.com/wPPkE.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wPPkE.png" alt="logs"></a></p>
  
  <p>Also, here is the main.py:</p>
  
  <pre><code>    from kivy.lang import Builder
      from plyer import gps
      from kivy.app import App
      from kivy.properties import StringProperty
      from kivy.clock import Clock, mainthread
  
      kv = '''
      BoxLayout:
          orientation: 'vertical'
          Label:
              text: app.gps_location
          Label:
              text: app.gps_status
          BoxLayout:
              size_hint_y: None
              height: '48dp'
              padding: '4dp'
              ToggleButton:
                  text: 'Start' if self.state == 'normal' else 'Stop'
                  on_state:
                      app.start(1000, 0) if self.state == 'down' else \
                      app.stop()
      '''
  
  
      class GpsTest(App):
  
          gps_location = StringProperty()
          gps_status = StringProperty('Click Start to get GPS location updates')
  
          def build(self):
              try:
                  gps.configure(on_location=self.on_location,
                                on_status=self.on_status)
              except NotImplementedError:
                  import traceback
                  traceback.print_exc()
                  self.gps_status = 'GPS is not implemented for your platform'
  
              return Builder.load_string(kv)
  
          def start(self, minTime, minDistance):
              gps.start(minTime, minDistance)
  
          def stop(self):
              gps.stop()
  
          @mainthread
          def on_location(self, **kwargs):
              self.gps_location = '\n'.join([
                  '{}={}'.format(k, v) for k, v in kwargs.items()])
  
          @mainthread
          def on_status(self, stype, status):
              self.gps_status = 'type={}\n{}'.format(stype, status)
  
          def on_pause(self):
              gps.stop()
              return True
  
          def on_resume(self):
              gps.start(1000, 0)
              pass
  
  if __name__ == '__main__':
      GpsTest().run()
  </code></pre>
  
  <p>And here is he buildozer.spec</p>
  
  <pre><code>[app]
  
  # (str) Title of your application
  title = TrackMyPhone
  
  # (str) Package name
  package.name = TrackMyPhone
  
  # (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 seperated e.g. requirements = sqlite3,kivy
  requirements = kivy,plyer
  
  # (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 = all
  
  # (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 = 2
  
  # 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
  
  # (int) Android API to use
  #android.api = 19
  
  # (int) Minimum API required
  #android.minapi = 9
  
  # (int) Android SDK version to use
  #android.sdk = 20
  
  # (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) 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
  
  # (str) Android entry point, default is ok for Kivy-based app
  #android.entrypoint = org.renpy.android.PythonActivity
  
  # (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 =
  
  # (str) python-for-android branch to use, defaults to master
  #p4a.branch = stable
  
  # (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 &lt;activity&gt; 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 =
  
  # (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
  android.arch = armeabi-v7a
  
  #
  # Python for android (p4a) specific
  #
  
  # (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
  
  
  #
  # iOS specific
  #
  
  # (str) Path to a custom kivy-ios folder
  #ios.kivy_ios_dir = ../kivy-ios
  
  # (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: &lt;lastname&gt; &lt;firstname&gt; (&lt;hexstring&gt;)"
  
  # (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
  </code></pre>