Can I Set "android:layout_below" at Runtime Programmatically?
Yes:
RelativeLayout.LayoutParams params= new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,ViewGroup.LayoutParams.WRAP_CONTENT); params.addRule(RelativeLayout.BELOW, R.id.below_id);viewToLayout.setLayoutParams(params);First, the code creates a new layout params by specifying the height and width. The addRule method adds the equivalent of the xml properly android:layout_below. Then you just call View#setLayoutParams on the view you want to have those params.
Alternatively you can use the views current layout parameters and modify them:
RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) viewToLayout.getLayoutParams();params.addRule(RelativeLayout.BELOW, R.id.below_id);
While @jackofallcode answer is correct, it can be written in one line:
((RelativeLayout.LayoutParams) viewToLayout.getLayoutParams()).addRule(RelativeLayout.BELOW, R.id.below_id);