Hello Everyone.
I'm not a professional developer so be patient with me.
I have been playing with xcamera to create a little test app that allows me to open and takes photos on android. I modified a little bit the file xcamera.kv to delete the button by default and allows me to create my own shoot photo button.
My app start with an intermediate screen, a button moves from intermediate screen to the camera screen, I have noticed when android device goes to "screen timeout" (yiu can see this option in android settings) that xcamera freeze and app needs to be reloaded, I don't know if this its a bug or there is a way to connect and disconnect the camera when entering/leaving the camera screen.
Really appreciate your help guys.
Attached my code, my buildozer spec and my xcamera.kv modified.
from kivy.lang import Builder
from kivymd.app import MDApp
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.properties import ObjectProperty,StringProperty,BooleanProperty
from kivy.uix.widget import Widget
from kivymd.uix.button import MDFillRoundFlatButton
from kivymd.uix.button import MDRectangleFlatButton
from kivymd.uix.button import MDFlatButton
from kivymd.uix.button import MDRaisedButton
from kivymd.uix.dialog import MDDialog
from kivymd.uix.list import OneLineAvatarIconListItem
from kivymd.uix.menu import MDDropdownMenu
from kivymd.theming import ThemeManager
from kivy.uix.boxlayout import BoxLayout
from kivy.clock import Clock
from kivymd.toast import toast
import time
from kivy.clock import mainthread
from kivy_garden.xcamera import XCamera
import os
KV = '''
WindowManager:
UnassignedLabelScreen:
Camara:
:
name:"uls"
canvas.before:
Rectangle:
pos: self.pos
size: self.size
source:"background.png"
MDToolbar:
pos_hint: {'top':1}
title: "MLCourier"
right_action_items: [["dots-vertical", lambda x: app.open_settings()]]
left_action_items: [["arrow-left", lambda x:root.manager.change_screen("actionscreen")]]
MDTextField:
id:labels
hint_text: "Number of Labels"
#helper_text: "Enter the number of labels to print"
mode: "rectangle"
helper_text_mode: "on_focus"
pos_hint: {"center_x":0.5, "center_y":0.5}
size_hint_x:None
width:dp(300)
#MDRectangleFlatButton:
MDRaisedButton:
pos_hint: {"center_x":0.5, "center_y":0.2}
text: "Take Photos"
size_hint:(0.4,0.1)
#text_color: 0, 0, 1, 1
on_release:
app.root.current="camara"
root.manager.transition.direction = "left"
:
#:import XCamera kivy_garden.xcamera.XCamera
name:"camara"
BoxLayout:
size_hint_y: 1
pos_hint: {'top':1}
orientation: "vertical"
MDToolbar:
title: "TEST"
right_action_items: [["dots-vertical", lambda x: app.open_settings()]]
left_action_items: [["arrow-left", lambda x:root.manager.change_screen("uls")]]
BoxLayout:
size_hint_y: 1
pos_hint: {'top':1}
orientation: 'horizontal'
padding:10
spacing:10
Widget:
id:proxy
XCamera:
id:xcamera
allow_stretch: False
keep_ratio: True
#size:self.size
center:self.size and proxy.center
size:(proxy.height,proxy.width)
canvas.before:
PushMatrix
Rotate:
angle:-90
origin:self.center
canvas.after:
PopMatrix
on_picture_taken: app.picture_taken(*args)
BoxLayout:
size_hint_y: 0.5
pos_hint: {'top':1}
orientation: 'vertical'
#padding:10
#spacing:10
BoxLayout:
size_hint_y: 1
pos_hint: {'top':1}
orientation: 'horizontal'
#padding:10
#spacing:10
BoxLayout:
size_hint_y: 1
pos_hint: {'top':1}
orientation: 'horizontal'
padding:10
spacing:10
MDRaisedButton:
pos_hint: {"center_x":0.5, "center_y":0.5}
size_hint:1,0.5
text: "TAKE PHOTO"
#text_color: 0, 0, 1, 1
#width:dp(600)
on_release:
xcamera.shoot()
BoxLayout:
orientation: "horizontal"
BoxLayout:
#size:100,100
#pos: root.pos
size_hint_y: 1
pos_hint: {'top':1}
orientation: 'horizontal'
padding:10
spacing:10
BoxLayout:
id:ph1
canvas.before:
PushMatrix
Rotate:
angle:-90
origin: self.center
canvas.after:
PopMatrix
Image:
source:app.photo1
BoxLayout:
#size:100,100
#pos: root.pos
size_hint_y: 1
pos_hint: {'top':1}
orientation: 'horizontal'
padding:10
spacing:10
BoxLayout:
id:ph2
canvas.before:
PushMatrix
Rotate:
angle:-90
origin: self.center
canvas.after:
PopMatrix
Image:
source:app.photo2
BoxLayout:
#size:100,100
#pos: root.pos
size_hint_y: 1
pos_hint: {'top':1}
orientation: 'horizontal'
padding:10
spacing:10
BoxLayout:
id:ph3
canvas.before:
PushMatrix
Rotate:
angle:-90
origin: self.center
canvas.after:
PopMatrix
Image:
source:app.photo3
BoxLayout:
#size:100,100
#pos: root.pos
size_hint_y: 1
pos_hint: {'top':1}
orientation: 'horizontal'
padding:10
spacing:10
BoxLayout:
id:ph4
canvas.before:
PushMatrix
Rotate:
angle:-90
origin: self.center
canvas.after:
PopMatrix
Image:
source:app.photo4
BoxLayout:
size_hint_y: 1
pos_hint: {'top':1}
orientation: 'horizontal'
#padding:10
#spacing:10
BoxLayout:
size_hint_y: 1
pos_hint: {'top':1}
orientation: 'horizontal'
padding:10
spacing:10
MDRaisedButton:
size_hint:1,0.5
pos_hint: {"center_x":0.5, "center_y":0.5}
text: "DELETE PHOTOS"
#text_color: 0, 0, 1, 1
#width:dp(600)
on_release:
app.clearimage()
'''
class WindowManager(ScreenManager):
def change_screen(self, screen):
# the same as in .kv: app.root.current = screen
self.current = screen
class Camara(Screen):
pass
class UnassignedLabelScreen(Screen):
pass
class Test(MDApp):
photo1=ObjectProperty('photo_background.png', allownone=True)
photo2=ObjectProperty('photo_background.png', allownone=True)
photo3=ObjectProperty('photo_background.png', allownone=True)
photo4=ObjectProperty('photo_background.png', allownone=True)
exc_num_pics=BooleanProperty()
def build(self):
self.theme_cls.primary_palette="Blue"
self.theme_cls.primary_hue = "900"
self.sm = ScreenManager()
self.num_pics=0
self.exc_num_pics=True
return Builder.load_string(KV)
@mainthread
def clearimage(self):
if self.photo1!='photo_background.png':
os.remove(str(self.photo1))
self.photo1='photo_background.png'
if self.photo2!='photo_background.png':
os.remove(str(self.photo2))
self.photo2='photo_background.png'
if self.photo3!='photo_background.png':
os.remove(str(self.photo3))
self.photo3='photo_background.png'
if self.photo4!='photo_background.png':
os.remove(str(self.photo4))
self.photo4='photo_background.png'
self.num_pics=0
@mainthread
def picture_taken(self, obj, filename):
if self.num_pics==0:
self.photo1=str(filename)
print('Picture taken and saved to {}'.format(filename))
if self.num_pics==1:
self.photo2=str(filename)
print('Picture taken and saved to {}'.format(filename))
if self.num_pics==2:
self.photo3=str(filename)
print('Picture taken and saved to {}'.format(filename))
if self.num_pics==3:
self.photo4=str(filename)
print('Picture taken and saved to {}'.format(filename))
self.num_pics=self.num_pics+1
if self.num_pics>3:
self.exc_num_pics=False
toast("No more than 4 pics are allowed!")
Test().run()
Buildozer.spec:
[app]
(str) Title of your application
title = PhotoTest
(str) Package name
package.name = PhotoTestApp
(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,ttf,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 =
android,
Pillow,
Kivy==1.11.1,
python3,
kivymd,
plyer
(str) Custom source folders for requirements
Sets custom source for any requirements with recipes
#requirements.source.kivy = ../../kivy
(list) Garden requirements
#garden_requirements=mapview
(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
(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,CAMERA
(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 = True
(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
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
#android.add_gradle_repositories =
(list) packaging options to add
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_activites = 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 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 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
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 = v2020.04.29
(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: ()"
(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
xcamera.kv
#:import xcamera kivy_garden.xcamera.xcamera
# icon_color: (0, 0, 0, 1)
# _down_color: xcamera.darker(self.icon_color)
# icon_size: dp(50)
# canvas.before:
# Color:
# rgba: self.icon_color if self.state == 'normal' else self._down_color
# Ellipse:
# pos: self.pos
# size: self.size
# size_hint: None, None
# size: self.icon_size, self.icon_size
# font_size: self.icon_size/2
:
# \ue800 corresponds to the camera icon in the font
icon: u"[font=data/icons.ttf]\ue800[/font]"
icon_color: (0.13, 0.58, 0.95, 0.8)
icon_size: dp(70)
id: camera
resolution: 640, 480 # 1920, 1080
allow_stretch: True
# Shoot button
XCameraIconButton:
# id: shoot_button
# markup: True
# text: root.icon
# icon_color: root.icon_color
# icon_size: root.icon_size
# on_release: root.shoot()
# # position
# right: root.width - dp(10)
# center_y: root.center_y
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