Button btn = new Button(context); btn.setId(R.id.button_id);
TextView tv = new TextView(context); tv.setId(101);
MyCustomView customView = new MyCustomView(context); customView.setId(1001);This code creates an instance of a custom view called `MyCustomView` and assigns it a unique id of `1001`. The android.view package library contains the View class and related classes for implementing user interface elements in Android applications.