Android obtains null via intent value

I am passing through the intent to get delivery of the error, null pointer, I am the Getmap method to pass the value, the code is as follows

public void Getmap (view view) {         Intent i = new Intent (this, breweryyourtopbeers.class);        LOG.D ("Map", E.beerbreweryid);        I.putextra ("Breweryid",  E.beerbreweryid);        I.setclass (this, brewerymap.class);         StartActivity (i);    }

I can see from my log that E.beerbreweryid does have a value before the value is passed, and I get the change in the code below

public class Brewerymap extends Actionbarmenu {    beerdata e;     String Beerid;     GoogleMap map;  get beer details from bundles     protected void OnCreate (bundle savedinstancestate) {        super.oncreate ( Savedinstancestate);         Setcontentview (R.LAYOUT.ACTIVITY_BREWERYMAP);        Get Brewery data        //get beer data         Intent Intent = Getintent ();         Bundle extras = Intent.getextras ();          String Breweryid = extras.getstring ("Brewreyid");        Map = ((mapfragment) Getfragmentmanager (). Findfragmentbyid (R.id.map)). Getmap ();         String url = "http://api.brewerydb.com/v2/brewery/" + Breweryid + "? key=mykey&format=json&withlocations=y";        LOG.D ("map", url);         New Myasynctask (This,map). Execute (URL);}}

Every time I get the value is NULL, do not know what the reason.

Processing methods

One line has been written wrong.
Put
String Breweryid = extras.getstring ("Brewreyid");
Into
String Breweryid = extras.getstring ("Breweryid");

Original address: http://www.itmmd.com/201411/134.html
This article by Meng Meng's IT person to organize the release, reprint must indicate the source.

Android obtains null via intent value