android點滴4:main cannot be resolved or is not a ...
main cannot be resolved or is not a fiel java
錯誤產生在R.layout.main這條語句上，並且後面的關於R.java的有些內容引用不了，好比id等 android
可能的緣由是好比xml文件或者資源文件時，系統自動添加了import android.R;android.R是系統提供的資源，R是應用程序的資源。這時候只要刪除 import android.R;這條語句就能夠了。 spa
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