title: Kivy + Python + Camera = Does not work on Android
body: <p>apk-app does not work on android.
  Try to work with the camera via Python + Kivy on Android. But the application terminates. What could be the problem?
  The application runs on MakOS.
  The app does not work on Android</p>
  
  <p>Details:</p>
  
  <p>main.py: </p>
  
  <pre><code>from kivy.app import App
  from kivy.uix.camera import Camera
  
  class MyApp(App):
  
      def build(self):
          cam=Camera(index=0,resolution=(640,480), size=(500,500))
          return cam
  
  if __name__ == '__main__':
      MyApp().run()
  </code></pre>
  
  <p>adb logcat *:W</p>
  
  <pre><code>W/ResourceType(21004): No known package when getting name for resource number 0x9c020203
  W/ResourceType(21004): No known package when getting name for resource number 0x9c020203
  W/ResourceType(21004): No known package when getting name for resource number 0x9c020203
  W/ResourceType(21004): No known package when getting name for resource number 0x9c020203
  W/AudioDigitalControl(  134): GetAfeDigitalStatus mAudioMEMIF[9] state = 1, mAudioDigitalBlock = 1
  W/AudioPlatformDevice(  134): GetULFrequency with frequency = 44100
  W/AudioPlatformDevice(  134): GetULFrequency with frequency = 44100
  W/ResourceType(21004): No known package when getting name for resource number 0x9c020203
  W/asset   (  572): AssetManager--&gt;addDefaultAssets CIP path not exsit!
  W/ActivityManager(  572): [LTK] pid, app, 3d=21004, 7163904, 160800768
  W/ActivityManager(  572): Unable to write /sys/module/mlog/parameters/do_mlog
  E/Trace   ( 1336): error opening trace file: No such file or directory (2)
  E/        ( 3961): appName=com.android.systemui, acAppName=com.android.cts.openglperf
  E/        ( 3961): 0
  E/        ( 3961): appName=com.android.systemui, acAppName=com.android.browser
  E/        ( 3961): 0
  W/SurfaceFlinger(  130): GraphicBuffer(0x417654d0) is rejected
  W/SurfaceFlinger(  130): [Layer::activeBufferBackup] mActiveBuffer=0x0 not initialized
  W/MediatekClassFactory(  572): OP not exist!, Get obj from default class
  W/MediatekClassFactory(  572): Exception: java.lang.NoSuchMethodException
  E/AudioService(  572): handleConfigurationChanged() createInstance IAudioServiceExt fail
  W/asset   ( 1336): AssetManager--&gt;addDefaultAssets CIP path not exsit!
  W/ResourceType( 1336): No package identifier when getting value for resource number 0x00000000
  W/ResourceType( 1336): No package identifier when getting value for resource number 0x00000000
  E/linker  ( 1336): load_library(linker.cpp:759): library "/data/data/org.test.testcam/files/lib/python2.7/lib-dynload/_sqlite3.so" not found
  E/dalvikvm( 1336): dlopen("/data/data/org.test.testcam/files/lib/python2.7/lib-dynload/_sqlite3.so") failed: Cannot load library: load_library(linker.cpp:759): library "/data/data/org.test.testcam/files/lib/python2.7/lib-dynload/_sqlite3.so" not found
  E/linker  ( 1336): load_library(linker.cpp:759): library "/data/data/org.test.testcam/files/lib/python2.7/lib-dynload/_imaging.so" not found
  E/dalvikvm( 1336): dlopen("/data/data/org.test.testcam/files/lib/python2.7/lib-dynload/_imaging.so") failed: Cannot load library: load_library(linker.cpp:759): library "/data/data/org.test.testcam/files/lib/python2.7/lib-dynload/_imaging.so" not found
  E/linker  ( 1336): load_library(linker.cpp:759): library "libmaliinstr.so" not found
  E/        ( 1336): appName=org.test.testcam:python, acAppName=com.android.cts.openglperf
  E/        ( 1336): 0
  E/        ( 1336): appName=org.test.testcam:python, acAppName=com.android.browser
  E/        ( 1336): 0
  E/        ( 1336): appName=org.test.testcam:python, acAppName=com.android.cts.openglperf
  E/        ( 1336): 0
  E/        ( 1336): appName=org.test.testcam:python, acAppName=com.android.browser
  E/        ( 1336): 0
  W/SDLSurface( 1336): Create egl surface
  W/IInputConnectionWrapper(21004): showStatusIcon on inactive InputConnection
  W/ActivityManager(  572): Unable to write /sys/module/mlog/parameters/do_mlog
  </code></pre>
  
  <p>buildozer.spec</p>
  
  <pre><code>[app]
  
  # (str) Title of your application
  title = Test Camera
  
  # (str) Package name
  package.name = testcam
  
  # (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,mechanize
  
  # (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 = CAMERA    
  
  # (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 &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 =
  
  #
  # 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: &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 = 1
  
  # (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
  </code></pre>