Marge sur les ToggleButtons générés dynamiquement

Question

Je génère des ToggleButtons dynamiquement, mais je ne parviens pas à mettre une marge supérieure pour éviter que les boutons se joignent entre eux.

Mon code est le suivant, ce que je fais mal?

private void generateToggleButton(){ 

    RelativeLayout.LayoutParams lvg = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, R.dimen.tv_et_standart_small); 
    lvg.height = R.dimen.tv_et_standart_small; 
    lvg.width = RelativeLayout.LayoutParams.MATCH_PARENT; 
    lvg.setMargins(0, R.dimen.dp8, 0 ,0); 


    for(int e = 0; e < new_exp_Especies.size(); e++){ 
     final int position = e; 
     ToggleButton tb = new ToggleButton(this); 

     tb.setBackgroundDrawable(getResources().getDrawable(R.drawable.customshape_orange_red)); 
     tb.setText(new_exp_Especies.get(position).EspecieDesc); 
     tb.setTextOff(new_exp_Especies.get(position).EspecieDesc); 
     tb.setTextOn(new_exp_Especies.get(position).EspecieDesc); 
     tb.setTextSize(12); 
     tb.setGravity(Gravity.CENTER); 
     tb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { 
      @Override 
      public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 
       if (isChecked) { 
        buttonView.setBackgroundDrawable(getResources().getDrawable(R.drawable.customshape_green)); 
        new_exp_Especies.get(position).setValue(1); 
       } else { 
        buttonView.setBackgroundDrawable(getResources().getDrawable(R.drawable.customshape_orange_red)); 
        new_exp_Especies.get(position).setValue(0); 
       } 
      } 
     }); 
     tb.setLayoutParams(lvg); 

     ll_tbt_especie.addView(tb); 
    } 

} 

Answer 1

Après beaucoup d'essais, enfin, je l'ai résolu le problème avec:

final LinearLayout.LayoutParams lparams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, getResources().getDimensionPixelOffset(R.dimen.tv_et_standart_small)); 
lparams.gravity = Gravity.CENTER; 
lparams.topMargin = getResources().getDimensionPixelOffset(R.dimen.dp8);