奇异果-图像作为按钮 [英] Kivy-- Image as Button

问题描述

我只是面向对象编程的新手.

I am just beginner in kivy and object oriented programming.

我一直在结合此处的教程来练习此代码:

I have been practicing this code as a combination of the tutorials here:

from kivy.uix.behaviors import ButtonBehavior  
from kivy.uix.image import Image  
from kivy.lang import Builder  
from kivy.app import App  
from kivy.uix.floatlayout import FloatLayout  

Builder.load_string("""  
<ImageButton>:  
    FloatLayout:  
        Image:  
            source:'resizedA.png'  
            size_hint: .2, .2  
""")  

class ImageButton(ButtonBehavior,FloatLayout, Image):  
    def on_press(self):  
        print ('pressed')


class The_AssignmentApp(App):  
    def build(self):  
        return ImageButton()  

if __name__ == "__main__":  
    The_AssignmentApp().run()  

我的问题是，为什么即使我按屏幕的其他部分(而不是图像)，应用程序仍将整个屏幕视为按钮?

My question is, why is that even if I press the other parts of the screen(not the image), the app still considers the whole scree as a button?

请原谅我的无知，我真的很想学习.谢谢！

Pardon my ignorance here, I would really want to learn. Thanks!

推荐答案

class ImageButton(ButtonBehavior,FloatLayout, Image):  

不要继承多个小部件(在本例中为FloatLayout和Image)，这将导致一些奇怪的错误.

Don't inherit from multiple widgets (in this case FloatLayout and Image), this will lead to some weird bugs.

对于您的特定问题，ButtonBehavior是ImageButton的父类，ImageButton是根窗口小部件并填充屏幕.因此，整个屏幕都是按钮，尽管您明确地打算这样做.

As for your specific problem, the ButtonBehavior is a parent class of the ImageButton which is the root widget and fills the screen. For this reason, the whole screen is a button, though you clearly intended otherwise.

以下内容是否更符合您的需求?您也可以只使用FloatLayout而不是创建新的RootWidget类，我只是这样做以适合您已经编写的内容.

Is the following more like what you wanted? You can also just use a FloatLayout instead of creating the new RootWidget class, I just did this to fit with what you already wrote.

from kivy.uix.behaviors import ButtonBehavior  
from kivy.uix.image import Image  
from kivy.lang import Builder  
from kivy.app import App  
from kivy.uix.floatlayout import FloatLayout  

class RootWidget(FloatLayout):
    pass

class ImageButton(ButtonBehavior, Image):  
    def on_press(self):  
        print ('pressed')

Builder.load_string("""  
<RootWidget>:  
    ImageButton:  
        source:'resizedA.png'  
        size_hint: .2, .2  
""")  

class The_AssignmentApp(App):  
    def build(self):  
        return RootWidget()

if __name__ == "__main__":  
    The_AssignmentApp().run()  

这篇关于奇异果-图像作为按钮的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！