I am working through the tutorials provided by Google for learning how to make Android apps and I don't understand why they pass this as an argument when creating and instance of TextView. Here is the code

```
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_display_message);
    Intent intent = getIntent();
    String message = intent.getStringExtra(MainActivity.EXTRA_MESSAGE);
    TextView textView = new TextView(this); //The line in question, why do they use "new TextView(this)
    textView.setTextSize(40);
    textView.setText(message);
    setContentView(textView);

```