android.widget cannot be resolved
右鍵工程-->buildPath-->configure Build Path，而後選擇Android,選擇project build target下的google APIs ,點擊OK就行。
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相關文章
- 1. The import xxx cannot be resolved ，String cannot be resolved
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- 3. java.io.IOException cannot be resolved
- 4. tomcat:javax.servlet.http.HttpServletRequest cannot be resolved
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