How to get this pointer to activity instance from anonymous method

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Java

Android

Hi,
how can i get a pointer to my activity object instance from within an anonymous method in Java/Android.

The problem is that the 'this' pointer gives me an instance to the function:

Error:(44, 17) error: constructor MyTask in class MyTask cannot be applied to given types;
required: Activity
found: anonymous OnCheckedChangeListener
reason: actual argument <anonymous oncheckedchangelistener=""> cannot be converted to Activity by method invocation conversion

<pre lang="java">
public class MyActivity extends AppCompatActivity {

    Switch mySwitch = null;

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

        mySwitch = (Switch) findViewById(R.id.myswitch2);
        mySwitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                String val= "0";

                new MyTask(this).execute(val); <----- this pointer here
            }
        });
    }
}

MyTask constructor

MyTask(Activity activity)
{
    caller = activity;
}

I would like to avoid having a stored reference to the instance in my class.

Thanks!

What I have tried:

this.class
this.getClass()
getActivity()
getApplicationContext()