Null Pointer Exception of WebView in Android

this NullPointerException i am getting makes no sense to me. I have a webview that was 开发者_运维技巧just working fine for a long time and now it is showing null for no reason i can see.

public class SmsMain extends Activity {

@Override
public void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    WebView browser = (WebView) findViewById(R.id.webView2); //debugger says browser is null
    browser.loadUrl("file:///android_asset/smsabout.html"); //error is here 
}

xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_height="fill_parent" android:layout_width="match_parent">

    <WebView android:id="@+id/webView2" 
    android:layout_height="fill_parent" 
    android:layout_width="fill_parent"></WebView>

</LinearLayout>

as you can see it is defined properly and referenced properly but browser is null when i trace it in the debugger. It cant be the html file because i know its there and i didnt change anything with it. so why is it giving me this?

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I assume your XML is located in a res/layout* directory appropriate for your current device configuration. Might want to clean and rebuild to make sure the Android resources are in sync with your code.