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Using two setContentView in one activity class

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http://stackoverflow.com – I have the following code where MyClass basically extends View. I was wondering if I need to use both setContentView(R.layout.activity_mainlcass_app) and setContentView(myDrawing) to show the 2D graphics that I draw in MyClass. public class MainClass extends Activity { MyClass myDrawing; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_mainlcass_app); myDrawing = new myDrawing(this); setContentView(myDrawing); myDrawing.requestFocus(); } } (HowTos)