Добрый день, я написал простую программу для камеры, используя Python и Kivy, но я просто не могу сделать снимок. Вам необходимо сделать снимок "ScreenThree" (сохранить его в памяти телефона) и отобразить полученное изображение на "ScreenFour".
Я использую kivy.uix.camera для отображения камеры, kivymd и kv для создания интерфейса. android.permissions: Интернет, камера, WRITE_EXTERNAL_STORAGE, READ_EXTERNAL_STORAGE
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.uix.camera import Camera
from kivymd.theming import ThemeManager
import time
Builder.load_string("""
#:import MDFillRoundFlatButton kivymd.button.MDFillRoundFlatButton
#:import MDIconButton kivymd.button.MDIconButton
<ScreenOne@Screen>:
canvas:
Color:
rgb: [.30,.50,.99]
Rectangle:
pos: self.pos
size: self.size
FloatLayout:
MDFillRoundFlatButton:
color: [1,1,1,1]
text: "Перейти к созданию фото"
pos_hint: {'center_x':.50, 'center_y':.50}
on_press:
root.manager.transition.direction = 'up'
root.manager.transition.duration = 1
root.manager.current = 'screen_two'
<ScreenTwo@Screen>:
canvas:
Color:
rgb: [.30,.50,.99]
Rectangle:
pos: self.pos
size: self.size
FloatLayout:
MDFillRoundFlatButton:
color: [1,1,1,1]
text: "Выбрать фон"
pos_hint: {'center_x':.50, 'center_y':.10}
on_press:
root.manager.transition.direction = 'up'
root.manager.transition.duration = 1
root.manager.current = 'screen_three'
MDIconButton:
icon: 'chevron-double-right'
pos_hint: {'center_x':.95, 'center_y':.10}
on_press:
root.manager.transition.direction = 'down'
root.manager.transition.duration = 1
root.manager.current = 'screen_one'
<ScreenThree@Screen>:
id: entry
canvas:
Color:
rgb: [.30,.50,.99]
Rectangle:
pos: self.pos
size: self.size
FloatLayout:
Camera:
id: camera
index: 0
resolution: (1280,720)
play: True
MDFillRoundFlatButton:
text: "take photo"
pos_hint: {'center_x': 0.50, 'center_y': .10}
on_press:
root.capture() #TAKE PHOTO
root.manager.transition.direction = 'up'
root.manager.transition.duration = 1
root.manager.current = 'screen_four'
MDIconButton:
icon: 'chevron-double-right'
pos_hint: {'center_x':.95, 'center_y':.10}
on_press:
root.manager.transition.direction = 'down'
root.manager.transition.duration = 1
root.manager.current = 'screen_two'
<ScreenFour@Screen>:
canvas:
Color:
rgb: [.30,.50,.99]
Rectangle:
pos: self.pos
size: self.size
FloatLayout:
# HERE I NEED TO DISPLAY THE IMAGE
MDIconButton:
icon: 'chevron-double-right'
pos_hint: {'center_x':.95, 'center_y':.10}
on_press:
root.manager.transition.direction = 'down'
root.manager.transition.duration = 1
root.manager.current = 'screen_three'
""")
class ScreenOne(Screen):
pass
class ScreenTwo(Screen):
theme_cls = ThemeManager()
theme_cls.primary_palette = 'Blue'
main_widget = None
class ScreenThree(Screen):
theme_cls = ThemeManager()
theme_cls.primary_palette = 'Blue'
main_widget = None
def capture(self):
camera = self.ids['camera']
timestr = time.strftime("%Y%m%d_%H%M%S")
photo = camera.export_to_png("IMG_{}.png".format(timestr))
print("Captured")
class ScreenFour(Screen):
pass
screen_manager = ScreenManager()
screen_manager.add_widget(ScreenOne(name="screen_one"))
screen_manager.add_widget(ScreenTwo(name="screen_two"))
screen_manager.add_widget(ScreenThree(name="screen_three"))
screen_manager.add_widget(ScreenFour(name="screen_four"))
class Interface(App):
def build(self):
return screen_manager
sample_app = Interface()
sample_app.run()
Подскажите, пожалуйста, как я могу изменить код для выполнения задачи.
04-08 21:15:19.925 796 13801 E mm-camera: <STATS_AF ><ERROR> 959: af_spd_detect_process: ERROR! SPOT_LIGHT_FLAG =0!!! :AEC_grid = 256, BG_grid = 3072, ave luma = 0
04-08 21:15:19.933 835 902 W SurfaceFlinger: EventThread: dropping event (7673796e) for connection 0x7b332278c0
04-08 21:15:19.949 835 902 W SurfaceFlinger: EventThread: dropping event (7673796e) for connection 0x7b332278c0
04-08 21:15:19.959 796 13801 E mm-camera: <STATS_AF ><ERROR> 959: af_spd_detect_process: ERROR! SPOT_LIGHT_FLAG =0!!! :AEC_grid = 256, BG_grid = 3072, ave luma = 0
04-08 21:15:19.966 835 902 W SurfaceFlinger: EventThread: dropping event (7673796e) for connection 0x7b332278c0
04-08 21:15:19.983 835 902 W SurfaceFlinger: EventThread: dropping event (7673796e) for connection 0x7b332278c0
04-08 21:15:19.992 796 13801 E mm-camera: <STATS_AF ><ERROR> 959: af_spd_detect_process: ERROR! SPOT_LIGHT_FLAG =0!!! :AEC_grid = 256, BG_grid = 3072, ave luma = 0
04-08 21:15:19.999 835 902 W SurfaceFlinger: EventThread: dropping event (7673796e) for connection 0x7b332278c0
04-09 08:27:25.140 796 6243 E mm-camera: <STATS_AF ><ERROR> 959: af_spd_detect_process: ERROR! SPOT_LIGHT_FLAG =0!!! :AEC_grid = 256, BG_grid = 3072, ave luma = 0
04-09 08:27:25.146 835 902 W SurfaceFlinger: EventThread: dropping event (7673796e) for connection 0x7b32a54420
04-09 08:27:25.146 6164 6198 I python : Captured
04-09 08:27:25.147 6164 6198 I python : [ERROR ] [Image ] Error reading file IMG_20190409_082724.png
04-09 08:27:25.162 835 902 W SurfaceFlinger: EventThread: dropping event (7673796e) for connection 0x7b32a54420
04-09 08:27:25.175 796 6243 E mm-camera: <STATS_AF ><ERROR> 959: af_spd_detect_process: ERROR! SPOT_LIGHT_FLAG =0!!! :AEC_grid = 256, BG_grid = 3072, ave luma = 0
04-09 08:27:25.179 835 902 W SurfaceFlinger: EventThread: dropping event (7673796e) for connection 0x7b32a54420
Ссылка на фотографию, используя следующее:
class ScreenFour(Screen):
def on_pre_enter(self, *args):
self.ids.img.source = self.manager.ids.entry.photo
<class-name@widget>:
Это динамический класс. При использовании динамического класса нет необходимости в определении класса в скрипте Python.
@Screen
.<ScreenManagement>:
<ScreenManagement>:
id: entry
в дочерний экземпляр, ScreenThree:Image:
как потомок FloatLayout:
правила класса, <ScreenFour>:
id: img
под созданным экземпляром child, Image:
#:import MDIconButton kivymd.button.MDIconButton
<ScreenManagement>:
ScreenOne:
name: "screen_one"
ScreenTwo:
name: "screen_two"
ScreenThree:
id: entry
name: "screen_three"
ScreenFour:
name: "screen_four"
...
<ScreenFour>:
canvas:
Color:
rgb: [.30,.50,.99]
Rectangle:
pos: self.pos
size: self.size
FloatLayout:
Image:
id: img
from os.path import dirname
from kivy.properties import StringProperty
class ScreenManagement()
screen_manager
photo = StringProperty('')
в class ScreenThree()
self.photo = f"{dirname(__file__)}/IMG_{time.strftime('%Y%m%d_%H%M%S')}.png"
on_pre_enter()
метод on_pre_enter()
для отображения фотографии.from os.path import dirname
from kivy.properties import StringProperty
...
class ScreenThree(Screen):
photo = StringProperty('')
def capture(self):
camera = self.ids['camera']
self.photo = f"{dirname(__file__)}/IMG_{time.strftime('%Y%m%d_%H%M%S')}.png"
camera.export_to_png(self.photo)
print("Captured")
class ScreenFour(Screen):
def on_pre_enter(self, *args):
self.ids.img.source = self.manager.ids.entry.photo
class ScreenManagement(ScreenManager):
pass
class Interface(App):
def build(self):
return ScreenManagement()
from os.path import dirname
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
from kivymd.theming import ThemeManager
from kivy.properties import StringProperty
import time
Builder.load_string("""
#:import MDFillRoundFlatButton kivymd.button.MDFillRoundFlatButton
#:import MDIconButton kivymd.button.MDIconButton
<ScreenManagement>:
ScreenOne:
name: "screen_one"
ScreenTwo:
name: "screen_two"
ScreenThree:
name: "screen_three"
id: entry
ScreenFour:
name: "screen_four"
<ScreenOne>:
canvas:
Color:
rgb: [.30,.50,.99]
Rectangle:
pos: self.pos
size: self.size
FloatLayout:
MDFillRoundFlatButton:
color: [1,1,1,1]
text: "Перейти к созданию фото"
pos_hint: {'center_x':.50, 'center_y':.50}
on_press:
root.manager.transition.direction = 'up'
root.manager.transition.duration = 1
root.manager.current = 'screen_two'
<ScreenTwo>:
canvas:
Color:
rgb: [.30,.50,.99]
Rectangle:
pos: self.pos
size: self.size
FloatLayout:
MDFillRoundFlatButton:
color: [1,1,1,1]
text: "Выбрать фон"
pos_hint: {'center_x':.50, 'center_y':.10}
on_press:
root.manager.transition.direction = 'up'
root.manager.transition.duration = 1
root.manager.current = 'screen_three'
MDIconButton:
icon: 'chevron-double-right'
pos_hint: {'center_x':.95, 'center_y':.10}
on_press:
root.manager.transition.direction = 'down'
root.manager.transition.duration = 1
root.manager.current = 'screen_one'
<ScreenThree>:
id: entry
canvas:
Color:
rgb: [.30,.50,.99]
Rectangle:
pos: self.pos
size: self.size
FloatLayout:
Camera:
id: camera
index: 0
resolution: (1280,720)
play: True
MDFillRoundFlatButton:
text: "take photo"
pos_hint: {'center_x': 0.50, 'center_y': .10}
on_press:
root.capture() #TAKE PHOTO
root.manager.transition.direction = 'up'
root.manager.transition.duration = 1
root.manager.current = 'screen_four'
MDIconButton:
icon: 'chevron-double-right'
pos_hint: {'center_x':.95, 'center_y':.10}
on_press:
root.manager.transition.direction = 'down'
root.manager.transition.duration = 1
root.manager.current = 'screen_two'
<ScreenFour>:
canvas:
Color:
rgb: [.30,.50,.99]
Rectangle:
pos: self.pos
size: self.size
FloatLayout:
Image:
id: img
MDIconButton:
icon: 'chevron-double-right'
pos_hint: {'center_x':.95, 'center_y':.10}
on_press:
root.manager.transition.direction = 'down'
root.manager.transition.duration = 1
root.manager.current = 'screen_three'
""")
class ScreenOne(Screen):
pass
class ScreenTwo(Screen):
theme_cls = ThemeManager()
theme_cls.primary_palette = 'Blue'
main_widget = None
class ScreenThree(Screen):
theme_cls = ThemeManager()
theme_cls.primary_palette = 'Blue'
main_widget = None
photo = StringProperty('')
def capture(self):
camera = self.ids['camera']
self.photo = f"{dirname(__file__)}/IMG_{time.strftime('%Y%m%d_%H%M%S')}.png"
camera.export_to_png(self.photo)
print("Captured")
class ScreenFour(Screen):
def on_pre_enter(self, *args):
self.ids.img.source = self.manager.ids.entry.photo
class ScreenManagement(ScreenManager):
pass
class Interface(App):
def build(self):
return ScreenManagement()
sample_app = Interface()
sample_app.run()
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.uix.camera import Camera
from kivymd.theming import ThemeManager
import time
filename = ''
screenfour = ''
Builder.load_string("""
#:import MDFillRoundFlatButton kivymd.button.MDFillRoundFlatButton
#:import MDIconButton kivymd.button.MDIconButton
<ScreenOne@Screen>:
canvas:
Color:
rgb: [.30,.50,.99]
Rectangle:
pos: self.pos
size: self.size
FloatLayout:
MDFillRoundFlatButton:
color: [1,1,1,1]
text: "Перейти к созданию фото"
pos_hint: {'center_x':.50, 'center_y':.50}
on_press:
root.manager.transition.direction = 'up'
root.manager.transition.duration = 1
root.manager.current = 'screen_two'
<ScreenTwo@Screen>:
canvas:
Color:
rgb: [.30,.50,.99]
Rectangle:
pos: self.pos
size: self.size
FloatLayout:
MDFillRoundFlatButton:
color: [1,1,1,1]
text: "Выбрать фон"
pos_hint: {'center_x':.50, 'center_y':.10}
on_press:
root.manager.transition.direction = 'up'
root.manager.transition.duration = 1
root.manager.current = 'screen_three'
MDIconButton:
icon: 'chevron-double-right'
pos_hint: {'center_x':.95, 'center_y':.10}
on_press:
root.manager.transition.direction = 'down'
root.manager.transition.duration = 1
root.manager.current = 'screen_one'
<ScreenThree@Screen>:
id: entry
canvas:
Color:
rgb: [.30,.50,.99]
Rectangle:
pos: self.pos
size: self.size
FloatLayout:
Camera:
id: camera
index: 0
resolution: (1280,720)
play: True
MDFillRoundFlatButton:
text: "take photo"
pos_hint: {'center_x': 0.50, 'center_y': .10}
on_press:
root.capture() #TAKE PHOTO
root.manager.transition.direction = 'up'
root.manager.transition.duration = 1
root.manager.current = 'screen_four'
MDIconButton:
icon: 'chevron-double-right'
pos_hint: {'center_x':.95, 'center_y':.10}
on_press:
root.manager.transition.direction = 'down'
root.manager.transition.duration = 1
root.manager.current = 'screen_two'
<ScreenFour@Screen>:
canvas:
Color:
rgb: [.30,.50,.99]
Rectangle:
pos: self.pos
size: self.size
FloatLayout:
Image:
size: root.width, root.height
source: ''
id: imageWid
MDIconButton:
icon: 'chevron-double-right'
pos_hint: {'center_x':.95, 'center_y':.10}
on_press:
root.manager.transition.direction = 'down'
root.manager.transition.duration = 1
root.manager.current = 'screen_three'
""")
class ScreenOne(Screen):
pass
class ScreenTwo(Screen):
theme_cls = ThemeManager()
theme_cls.primary_palette = 'Blue'
main_widget = None
class ScreenThree(Screen):
theme_cls = ThemeManager()
theme_cls.primary_palette = 'Blue'
main_widget = None
def capture(self):
camera = self.ids['camera']
timestr = time.strftime("%Y%m%d_%H%M%S")
photo = camera.export_to_png("IMG_{}.png".format(timestr))
global filename, screenfour
filename = "IMG_{}.png".format(timestr)
print("Captured")
screenfour.update()
class ScreenFour(Screen):
def __init__(self, **kwargs):
super(ScreenFour, self).__init__(**kwargs)
global screenfour
screenfour = self
def update(self, *args):
global filename
imageWidget = self.ids['imageWid']
imageWidget.source = filename
screen_manager = ScreenManager()
screen_manager.add_widget(ScreenOne(name="screen_one"))
screen_manager.add_widget(ScreenTwo(name="screen_two"))
screen_manager.add_widget(ScreenThree(name="screen_three"))
screen_manager.add_widget(ScreenFour(name="screen_four"))
class Interface(App):
def build(self):
return screen_manager
sample_app = Interface()
sample_app.run()
Вы бы создали global
переменную для сохранения имени файла изображения, а затем виджета " Image
на Screen
ScreenFour, где вы бы обновили источник виджета "Изображение" на имя файла фотографии, которую вы сделали. Не стесняйтесь связаться со мной, если возникнут какие-либо проблемы
from os.path import dirname
и префикс имени файла с именемdirname(__file__)
например,self.photo = f"{dirname(__file__)}/IMG_{time.strftime('%Y%m%d_%H%M%S')}.png"