How to save variable values when leaving activity?

Question

I'm trying to implement two mwthods to save variable informaton after I leave the activity,but I'm getting an error: markOne cannot be resolved to a variable on each of the variables.I have placed the two methods outside of OnCreate() .I have posted the whole class below showing how I implemented the onSaveInstanceState and onRestoreInstanceState methods.Could someone show me why the variales are not being resolved? I'm guessing its because the variables can't be accessed outside of onCreate() but how would I fix this problem?

public class CalcResult extends Activity implements OnClickListener{

    TextView result1,result2,result3;

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.result);

        final Intent intent1=new Intent(this,AboutActivity.class);
        final Intent intent2=new Intent(this,MainActivity.class);
        final Intent intent3=new Intent(this,MainActivity.class);



        final ViewGroup actionBarLayout = (ViewGroup) getLayoutInflater().inflate(
                R.layout.a,
                null);

        // Set up your ActionBar
        final ActionBar actionBar = getActionBar();
        actionBar.setDisplayShowHomeEnabled(false);
        actionBar.setDisplayShowTitleEnabled(false);
        actionBar.setDisplayShowCustomEnabled(true);
        actionBar.setCustomView(actionBarLayout);

        // You customization
        final int actionBarColor = getResources().getColor(R.color.action_bar);
        actionBar.setBackgroundDrawable(new ColorDrawable(actionBarColor));

        final Button actionBarHome = (Button) findViewById(R.id.action_bar_title);
        actionBarHome.setBackgroundResource(R.drawable.ic_action_back);
        actionBarHome.setOnClickListener(this);
        actionBarHome.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {                

               startActivity(intent2);

            }

        });

        final Button actionBarInfo = (Button) findViewById(R.id.action_bar_staff);
        actionBarInfo.setBackgroundResource(R.drawable.ic_action_help);
        actionBarInfo.setOnClickListener(this);
        actionBarInfo.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {                

               startActivity(intent1);

            }

        });


        final Button actionBarHoome = (Button) findViewById(R.id.action_bar_home);
        actionBarHoome.setBackgroundResource(R.drawable.appicon);
        actionBarHoome.setOnClickListener(this);
        actionBarHoome.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {                

               startActivity(intent3);

            }

        });

        result1 = (TextView)findViewById(R.id.markOne);
        result2 = (TextView)findViewById(R.id.markTwo);
        result3 = (TextView)findViewById(R.id.markThree);

        Intent intent = getIntent();
        double markOne = intent.getDoubleExtra("number1", 0);
        double markTwo = intent.getDoubleExtra("number2", 0);
        double markThree = intent.getDoubleExtra("number3", 0);

        DecimalFormat df = new DecimalFormat("#.##");

        result1.setText(String.valueOf(df.format(markOne)+"mm"));
        result2.setText(String.valueOf(df.format(markTwo)+"mm"));
        result3.setText(String.valueOf(df.format(markThree)+"mm"));

    }

    //Two methods I'm trying to implement ->
    @Override
    protected final void onSaveInstanceState(final Bundle outState)
    {
        // Save variables.
        outState.putString("markOne", markOne);
        outState.putString("markTwo", markTwo);
        outState.putString("markThree", markThree);

    }

    @Override
    protected final void onRestoreInstanceState(final Bundle outState)
    {
        // Restore saved variables and reshow activities if they were open.
        markOne = outState.getString("markOne", "");
        markTwo = outState.getString("markTwo", "");
        markThree = outState.getString("markThree", "");

    }

}

Answer 1

you have to define global variable below line

TextView result1,result2,result3;
double markOne,markTwo,markThree;

and replace

double markOne = intent.getDoubleExtra("number1", 0);
double markTwo = intent.getDoubleExtra("number2", 0);
double markThree = intent.getDoubleExtra("number3", 0);

with

markOne = intent.getDoubleExtra("number1", 0);
markTwo = intent.getDoubleExtra("number2", 0);
markThree = intent.getDoubleExtra("number3", 0);