You cannot undo or redo a folder action while the folder is loading.

在装入文件夹期间无法复原或重做一个文件夹操作。

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It could also be modified to work with the folder cleanup action.

同样，可以修改它来使用文件夹清理动作。

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Now, you create the folder that includes your image for the button that you add to the action bar.

现在，我们将创建包含按钮图像的文件夹(已在操作栏中添加该按钮)。

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