Objects Without xml
in activity
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// setContentView(R.layout.activity_main);
DisplayMetrics displayMetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
float height = displayMetrics.heightPixels;
float width = displayMetrics.widthPixels;
RelativeLayout myLayout = new RelativeLayout(this);
myLayout.setBackgroundColor(Color.BLUE);
Button myButton = new Button(this);
myButton.setText("Press me");
myButton.setBackgroundColor(Color.YELLOW);
float w = (width*(float)0.3);
myButton.setLayoutParams(new RelativeLayout.LayoutParams((int)w, (int)w));
myButton.setX(width*(float)0.1);
myButton.setY(width*(float)0.1);
myLayout.addView(myButton);
setContentView(myLayout);
}