switch case statement error: case expressions must be constant expression

case expression must be constant
solution :  convert switch to if-else

-click ctrl+1 by placing the switch

-convert to if-else

aapt.exe has stopped

Some of the reasons for the error "aapt.exe has stopped " while building android app in eclipse are:

-use of strings in xml layouts that are not available
 for example:

<item android:title="@string/action_settings"> 

if string.xml doesnot contain the string action_settings then we get this error .

-r.java file will not get generated for such errors