4 slot game java

ImageView _slot1, _slot2, _slot3, _slot4;
    Button _action;
    boolean inAction = true;
    Asynctask _async1, _async2, _async3, _async4;

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

        _action = findViewById(R.id.action);
        _action.setOnClickListener(this);

        _slot1 = findViewById(R.id.slot1);
        _slot2 = findViewById(R.id.slot2);
        _slot3 = findViewById(R.id.slot3);
        _slot4 = findViewById(R.id.slot4);

    }

    @Override
    public void onClick(View v) {
        if (v.getId() == _action.getId()) {
            if (inAction) {

                new Asynctask(_async1).execute();

                _async1 = new Asynctask();
                _async2 = new Asynctask();
                _async3 = new Asynctask();
                _async4 = new Asynctask();

//                _async1 = new Asynctask();
//                _async1.executeOnExecutor(Asynctask.SERIAL_EXECUTOR, _slot1);

                _async1.executeOnExecutor(Asynctask.THREAD_POOL_EXECUTOR, _slot1);
//
//                _async2 = new Asynctask();
                _async2.executeOnExecutor(Asynctask.THREAD_POOL_EXECUTOR, _slot2);
//
//                _async3 = new Asynctask();
//                _async3.executeOnExecutor(Asynctask.THREAD_POOL_EXECUTOR, _slot3);

//                _async4 = (Asynctask) new Asynctask().execute(_slot4);

//                _async4 = new Asynctask();
                _async4.executeOnExecutor(Asynctask.THREAD_POOL_EXECUTOR, _slot4);
//                _async4.execute(_slot4);

//                if (_async1._next == _async2._next && _async2._next == _async3._next) {
//                    Toast.makeText(getApplicationContext(), "Menang Banyak", Toast.LENGTH_SHORT).show();
//                } else if (_async1._next == _async2._next || _async2._next == _async3._next || _async1._next == _async3._next) {
//                    Toast.makeText(getApplicationContext(), "Menang", Toast.LENGTH_SHORT).show();
//                } else {
//                    Toast.makeText(getApplicationContext(), "Kalah", Toast.LENGTH_SHORT).show();
//                }

//                else {
//                    Toast.makeText(getApplicationContext(), "Kalah", Toast.LENGTH_SHORT).show();
//                }

                _action.setText("STOP");

            } else {

                _async1._roll = false;

                _async2._roll = false;

//                _async3._roll = false;

                _async4._roll = false;

                if (_async1._next == _async2._next && _async2._next == _async4._next) {
                    Toast.makeText(getApplicationContext(), "Menang Banyak", Toast.LENGTH_SHORT).show();
                } else if (_async1._next == _async2._next || _async2._next == _async4._next || _async1._next == _async4._next) {
                    Toast.makeText(getApplicationContext(), "Menang", Toast.LENGTH_SHORT).show();
                } else {
                    Toast.makeText(getApplicationContext(), "Kalah", Toast.LENGTH_SHORT).show();
                }

                _action.setText("ROLL");

            }

//            if (_async1._next == _async2._next && _async2._next == _async3._next) {
//                Toast.makeText(getBaseContext(), "Menang Banyak", Toast.LENGTH_SHORT).show();
//            } else if (_async1._next == _async2._next || _async2._next == _async3._next || _async1._next == _async3._next) {
//                Toast.makeText(getBaseContext(), "Menang", Toast.LENGTH_SHORT).show();
//            } else {
//                Toast.makeText(getBaseContext(), "Kalah", Toast.LENGTH_SHORT).show();
//            }

            inAction = !inAction;

        }
    }