Variable is accessed within inner class. Needs to be declared final

Question

I'm getting a compilation error inside of my onClick.

Here's the code.

public class fieldsActivity extends Activity {  Button addSiteButton; Button cancelButton; Button signInButton;   /**  * Called when the activity is first created.  */ @Override public void onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);     // to create a custom title bar for activity window     requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);      setContentView(R.layout.fields);     // use custom layout title bar     getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.topbar);      Pager adapter = new Pager();     ViewPager mPager = (ViewPager) findViewById(R.id.fieldspager);     mPager.setAdapter(adapter);     mPager.setCurrentItem(1);        addSiteButton = (Button) findViewById(R.id.addSiteButton);     addSiteButton.setOnClickListener(new View.OnClickListener() {          @Override         public void onClick(View v) {            mPager.setCurrentItem(2, true); //Compilation error happens here.         }       });       cancelButton = (Button) findViewById(R.id.cancel_button);     signInButton = (Button) findViewById(R.id.sign_in_button);  } 

Answer 1

If you don't want to make it final, you can always just make it a global variable.