Android Random Number Guessing Game

random.java

package com.example.marufalom.calculator;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import java.util.Random;

public class MainActivity extends AppCompatActivity {
    int randomNumber;
    public void guess(View view) {
        EditText numberInput = (EditText) findViewById(R.id.numberInput);

        int numberInt = Integer.parseInt(numberInput.getText().toString());

        if (numberInt > randomNumber) {
            Toast.makeText(MainActivity.this, "Lower", Toast.LENGTH_SHORT).show();
        } else if (numberInt < randomNumber) {
            Toast.makeText(MainActivity.this, "Higher", Toast.LENGTH_SHORT).show();
        } else {
            Toast.makeText(MainActivity.this, "Correct! Lucky you.. Try Again", Toast.LENGTH_SHORT).show();

            Random random = new Random();
            randomNumber = random.nextInt(50)+1;
        }
    }
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Random random = new Random();
        randomNumber = random.nextInt(50)+1;
    }
}