مشکل با Text View

 package com.test.app.zarb;

import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;


public class ChampActivity extends Activity {

    private int c = 0, num1, num2, T = 0, F = 0, N = 0, timerS = 11;
     TextView tvQ, tvScore, tvTimer;
     EditText edtAnswer;
    Button           btnNext;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        TextView tvQ = (TextView) findViewById(R.id.txtQ);
        tvScore = (TextView) findViewById(R.id.txtScore);
        tvTimer = (TextView) findViewById(R.id.txtTimer);
        edtAnswer = (EditText) findViewById(R.id.edtAnswer);
        btnNext = (Button) findViewById(R.id.btnNext);
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_champ);
        num1 = Methods.rand(1, 9);
        num2 = Methods.rand(1, 9);
        tvQ.setText(num1 + " * " + num2);

    }
}

تو خط اخر مشکل داره

مرسی درست شد