android c2dm registration Id fails

I am working on goog开发者_运维知识库le's C2DM and have a program on the android emulator trying to get registration ID. But I get following errors:

DEBUG/GoogleLoginService(171): onBind: Intent { act=android.accounts.AccountAuthenticator cmp=com.google.android.gsf/.loginservice.GoogleLoginService }

WARN/GoogleLoginService(171): Device has no accounts: sending Intent { act=com.google.android.gsf.LOGIN_ACCOUNTS_MISSING }

ERROR/GTalkService(171): asyncFetch: no username

DEBUG/C2DMRegistrar(171): [C2DMRegistrar.20] AuthTokenCallback: account missing

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Your device needs to have at least one Google account set up under Settings/Accounts for C2DM to work.

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This is Because your device is not in Sync with the Google Go to Settings and add account enter Your Google account username and Password. Hope this Works..