How to add views dynamically to a RelativeLayout already declared in the xml layout?

Question

I declared a RelativeLayout in a xml layout file. Now I want to add Views from code to the existing Layout. I added a Button dynamical

Answer 1

Create another button:

Button tv2 = new Button(this);
tv2.setText("World");
tv2.setLayoutParams(lprams);
tv2.setId(2);

Add add it into your RelativeLayout:

rLayout.addView(tv2); 

Answer 2

Add the rule RelativeLayout.RIGHT_OF for the second added Button LayoutParams:

    // first Button
    RelativeLayout rLayout = (RelativeLayout) findViewById(R.id.rlayout);
    RelativeLayout.LayoutParams lprams = new RelativeLayout.LayoutParams(
            RelativeLayout.LayoutParams.WRAP_CONTENT,
            RelativeLayout.LayoutParams.WRAP_CONTENT);
    Button tv1 = new Button(this);
    tv1.setText("Hello");
    tv1.setLayoutParams(lprams);
    tv1.setId(1);
    rLayout.addView(tv1);

    // second Button
    RelativeLayout.LayoutParams newParams = new RelativeLayout.LayoutParams(
            RelativeLayout.LayoutParams.WRAP_CONTENT,
            RelativeLayout.LayoutParams.WRAP_CONTENT);
    Button tv2 = new Button(this);
    tv1.setText("Hello2");
    newParams.addRule(RelativeLayout.RIGHT_OF, 1);
    tv2.setLayoutParams(newParams);
    tv2.setId(2);
    rLayout.addView(tv2);

Answer 3

may be this can help you, try it.

rLayout = (RelativeLayout)findViewById(R.id.rlayout);
LayoutParams lprams = new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);

TableLayout tl=new TableLayout(this);
rLayout.addView(tl); 

TableRow tr1=new TableRow(this);
tl.addView(tr1);

Button btn1 = new Button(this);
btn1.setText("Hello");
btn1.setLayoutParams(lprams);
btn1.setId(1);
tr1.addView(btn1);

TextView tv1 = new TextView(this); 
tv1.setWidth(40);
tv1.setHeight(LayoutParams.WRAP_CONTENT);
tr1.addView(tv1);


Button btn2 = new Button(this);
btn2.setText("World");
btn2.setLayoutParams(lprams);
btn2.setId(2);
tr1.addView(btn2);