myeclipse not automatically compile

myeclipse android layout Resource

I built a pop.xml file in android project layout, in mainActivity in LayoutInflater.from (this) inflate (R.layout pop , null.).; given, the file can not be found pop.xml why, but I import pictures in the project, R.drawable.xxx not get that picture, online methods are tried, like clean, fix Project useless, how to solve?<-! Main posts under Banner (D4) -><-! Posts under the main text (D5) ->
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eclise then there is a Build Automatically, the compiler can automatically select the Project menu.
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cited a floor ameyume reply:

eclise Build Automatically if there is one, the compiler can automatically select the Project menu.

I've checked, or useless
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I added in activity_main.xml in a control, save in mainActivity which can not be initialized, R does not increase the file ID, have a big head
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reference to the third floor hesaiisme reply:

I add a control in activity_main.xml years, after which it can not be saved in mainActivity initialization, R does not increase the file ID , have a big head

Engineering mistake about it
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references, 4th Floor guoyoulei520 reply:

Quote: references to the third floor hesaiisme reply:

I added in activity_main.xml in a control, save in mainActivity which can not be initialized, R does not increase the file ID, have a big head

Engineering mistake about it

amount, no error can run, but can not add controls, you can use the original controls
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@ Guoyoulei520 I think it is not a configuration problem, and now I have this other project situation.
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You are not R references android.R? ?
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reference to the 7th floor x174232 reply:

you are not R references android.R? ?

no
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Because the computer for a re-build environment for development. This issue should be no solution, and I intend to reload, this thank you