Question

Looking at various examples, below is what seems to be the correct way of adding a view to a layout. However, nothing shows up for me. I’m assuming it has something to do with the layout options, but I’m new so I don’t know what is missing.

public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.songs_layout);
            LinearLayout layout = (LinearLayout) View.inflate(this, R.layout.songs_layout, null);

            Button myButton = new Button(this);
            myButton.setText("Change View");
            myButton.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
            layout.addView(myButton);


        }

Answer 1

Your layout variable is not the same as the layout you used in setContentView. Try calling setContentView(layout); after layout.addView(myButton); and removing the previous call to it (setContentView(R.layout.songs_layout);).

To be more clear, your onCreate method should look like

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    LinearLayout layout = (LinearLayout) View.inflate(this, R.layout.songs_layout, null);

    Button myButton = new Button(this);
    myButton.setText("Change View");
    myButton.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
    layout.addView(myButton);
    setContentView(layout);
}