kivy点击拍照并展示

python用个kivy库实现点击拍照并展示。实现一个截面中有摄像头，拍照之后展示图片

该回答引用ChatGPT4与博主@晓码自在合作编写：

使用kivy实现点击拍照并展示的代码:

python
from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.image import Image
from kivy.clock import Clock
from kivy.graphics.texture import Texture
from kivy.core.camera import Camera

class CameraApp(App):
    def build(self):
        self.img = Image()
        self.camera = Camera(resolution=(640, 480), play=False)
        self.camera.bind(on_load=self.camera_loaded)
        self.camera.bind(on_texture=self.texture_updated)
        
        btn = Button(text='Take Photo', on_press=self.take_photo)
        
        layout = BoxLayout(orientation='vertical')
        layout.add_widget(self.img)
        layout.add_widget(btn)
        
        return layout
        
    def camera_loaded(self, *args):
        Clock.schedule_interval(self.update_texture, 1/30)
        self.camera.play = True
        
    def update_texture(self, *args):
        if self.camera.status == 'playing':
            self.camera.texture = self.camera.texture
    
    def texture_updated(self, *args):
        if self.camera.status == 'playing':
            self.img.texture = self.camera.texture
            
    def take_photo(self, *args):
        self.camera.play = False
        self.camera.texture = Texture.create(size=self.camera.resolution)
        self.img.texture = self.camera.texture 
        
if __name__ == '__main__':
    CameraApp().run()

这个程序使用kivy的Camera实现摄像头捕获,并在Image控件中展示摄像头画面。当点击“Take Photo”按钮时,它会捕获当前画面,并固定展示为图片。