[android-developers] not supporting xhdpi resolution

I am developing an app in android 2.2 , i want  to support my app in all resolutions (ldpi,mdpi,hdpi,xhdpi)

so i created 4 folders in res folder (layout-ldpi ,layout-mdpi ,layout-hdpi ,layout-xhdpi)

then i given supported screens android manifest as

<supports-screens   android:largeScreens="true" android:normalScreens="true"
 android:smallScreens="true" android:anyDensity="true" android:resizeable="true" android:xlargeScreens="true">
 </supports-screens>

it returns an error that

No resource identifier found for attribute 'xlargeScreens' in package 'android
plse help me


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ωιтн яєgαя∂ѕ
Ratheesh ...........

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