java - Invalid App Id:facebook app Id -

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i have been trying create application in android sharing content facebook.but whenever try login facebook through login button in application....it shows me invalid app id:facebook app id.i goggled lot these , found link https://developers.facebook.com/docs/android/getting-started/facebook-sdk-for-android/ register our application in facebook,before run on emulator.even after following above link , registering application in facebook,am getting same error..plz me..


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