Android studio, what is wrong with this onBackPressed() code?

Question

I used below code to close app after back button pressed. Some time ago it worked but I tried to use it again and have:

Error:(88, 13) error: class, interface, or enum expected.

If I remove this code app can be build, I don't see where is problem?

Here is the MainActivity where onBackPressed is implemented:

package com.example.chab.test;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.os.Handler;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;
import com.squareup.picasso.Picasso;

public class MainActivity extends AppCompatActivity {


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    ImageView image = (ImageView) findViewById(R.id.a);
    ImageView image1 = (ImageView) findViewById(R.id.b);
    ImageView image2 = (ImageView) findViewById(R.id.c);
    ImageView image3 = (ImageView) findViewById(R.id.d);
    ImageView image4 = (ImageView) findViewById(R.id.e);
    ImageView image5 = (ImageView) findViewById(R.id.f);
    ImageView image6 = (ImageView) findViewById(R.id.g);

    Picasso.with(this).load("http:/1.jpeg").into(image);
    Picasso.with(this).load("http://1.jpeg").into(image1);
    Picasso.with(this).load("http://1.jpeg").into(image2);
    Picasso.with(this).load("http://1.jpeg").into(image3);
    Picasso.with(this).load("http://1.jpeg").into(image4);
    Picasso.with(this).load("http://1.jpeg").into(image5);
    Picasso.with(this).load("http://1.jpeg").into(image6);

    Button btnOne = (Button) findViewById(R.id.Btn);
    btnOne.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View arg0) {
            Intent intent = new Intent(getApplicationContext(), Activitydwa.class);
            startActivity(intent);
        }
    });


}
}  //THIS BRACKET MUST BE MOVED TO THE END OF CODE!

private Boolean exit = false;
@Override
private void super.onBackPressed() {
    if (exit) {
        this.finish(); // finish activity
    } else {
        Toast.makeText(this, "Press Back again to Exit.", Toast.LENGTH_SHORT).show();
        exit = true;
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                exit = false;
            }
        }, 3 * 1000);
    }
}

EDIT: Solved. Bracket before Boollean must be moved to the end of code. Then all works. Thank you.

Answer 1

Your first problem is that you have your method implemented outside of the class. In java, methods need to belong to a class, interface, or enum. Double check your brackets and move your method to the inside of your class brackets. Your second problem is that you have the wrong signature for the onBackPressed method. See the code below:

---

This is what you have:

public class MainActivity extends AppCompatActivity {

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    // ...
  }
}

private Boolean exit = false;

@Override
private void super.onBackPressed() {
  // ...
}

This is what you need:

public class MainActivity extends AppCompatActivity {

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    // ...
  }

  private Boolean exit = false;

  @Override
  public void onBackPressed() {
    // ...
  }
}