Null Pointer exception in using support library share action provider

Question

Below is the code of my Activity . In this I am using the support library appcompat

   import android.content.Intent;
   import android.os.Bundle;
   import          


        

Answer 1

If this line

shareAction.setShareIntent(shareIntent);

is throwing a NullPointerException, this sentence

(ShareActionProvider) MenuItemCompat.getActionProvider(item);

must be returning null.

Have a look at the post below, which talks about reasons why this would happen.

NullPointerException on setShareIntent using ActionBarSherlock