1、Rendering Problems Missing styles 设计界面布局时显示的错误:
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Rendering Problems
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Missing styles. Is the correct theme chosen for this layout?
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Use the Theme combo box above the layout to choose a different layout, or fix the theme style references.
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Failed to find style ‘buttonStyle‘ in current theme (8 similar errors not shown)
预览时控件非常小,如图:

解决办法:
在界面预览状态,点击上面的“AppTheme”,在打开的对话框中选择一种风格即可。

android-studio 使用过程遇到的问题,持续中...
原文:http://blog.csdn.net/u013339223/article/details/45056577