Of course it will not work when Dev Options->Don't Keep Activitie is on

DoNotDoThisBecauseItsStupid.java

package pl.selvin.completelywrongsolution;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;

public class DoNotDoThisBecauseItsStupid {
    public static class MainActivity extends Activity {

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            Button btn = new Button(this);
            btn.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    startActivity(new Intent(MainActivity.this, SecondActivity.class));
                }
            });
            btn.setText("MainActivity - open SecondActivty");
            setContentView(btn);
            registerReceiver(broadcast_reciever, new IntentFilter("finish_activity"));
        }

        BroadcastReceiver broadcast_reciever = new BroadcastReceiver() {

            @Override
            public void onReceive(Context arg0, Intent intent) {
                String action = intent.getAction();
                if (action.equals("finish_activity")) {
                    Log.e("OnReceive!!", "allo, allo");
                    finish();
                }
            }
        };

        @Override
        protected void onDestroy() {
            super.onDestroy();
            //It is bad to do not unregister but screw that solution is wrong so we don't do this ... it's still would not work
            //unregisterReceiver(broadcast_reciever);
        }
    }

    public static class SecondActivity extends Activity {

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            Button btn = new Button(this);
            btn.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Intent intent = new Intent("finish_activity");
                    sendBroadcast(intent);
                    finish();
                }
            });
            btn.setText("SecondActivity - close MAIN");
            setContentView(btn);
        }
    }
}

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