android ddms tool error

i got the error in d开发者_开发技巧dms tools.

when i run the ddms in android sdk tools it shows"Failed to get the adb version": cannot run program adb;crate process error=2;the system cannot find the file specified".

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Try add to the PATH variable the sdk tools path. it should looks like 'C:\Program Files\Android\android-sdk-windows\platform-tools\' (don't forget the last backslash).