如何使用Kivy的核心形象? [英] How To Use Kivy's Core Image?

问题描述

我有一个网格布局，并向其中添加了一些我想用于显示图片的CoreImage小部件.我选择不使用uix.image，因为CoreImage速度更快，并且我希望经常在几张图片之间交换.

I have a grid layout and am adding to it some CoreImage widgets that I want to use for displaying pictures. I chose not to use uix.image since CoreImage is faster and I want to swap between a few pictures often.

当我执行self.add_widget(CoreImage('Transparent.png'))时，我的程序将崩溃.

When I do self.add_widget(CoreImage('Transparent.png')) my program will crash.

Traceback (most recent call last):
   File "/path/to/my/app.py", line 1030, in <module>
     MyApp().run()
   File "/usr/lib/python2.7/dist-packages/kivy/app.py", line 798, in run
     root = self.build()
   File "/path/to/my/app.py", line 702, in build
     self.build_grid()
   File "/path/to/my/app.py", line 696, in build_grid
     self.grid.build_self()
   File "/path/to/my/app.py", line 134, in build_self
     self.add_widget(CoreImage('Transparent.png'))
   File "/usr/lib/python2.7/dist-packages/kivy/uix/layout.py", line 80, in add_widget
     size_hint=self._trigger_layout)
   File "_event.pyx", line 436, in kivy._event.EventDispatcher.bind (kivy/_event.c:5429)
 KeyError: 'size_hint'

我做错了什么?当我使用uix.image时，效果很好.

What am I doing wrong? This works fine when I used uix.image.

推荐答案

kivy.core.image.Image(我想这是您的意思)不是小部件，您不能像这样使用它.使用kivy.uix.image.Image.

kivy.core.image.Image (I assume this is what you mean) is not a widget, you can't use it like this. Use kivy.uix.image.Image.

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