title: Set a Margin between two buttons programmatically from a linearlayout
body: <p>How can i set a margin of 20dp between the button "regler" and "decommender" programmatically. </p>
  
  <p><img src="https://i.stack.imgur.com/3XHui.png" alt="enter image description here"></p>
  
  <p>Here is my workings</p>
  
  <pre><code> LinearLayout lytmain = new LinearLayout(Mcontex);
              lytmain.setOrientation(LinearLayout.VERTICAL);
              LinearLayout lytdate = new LinearLayout(Mcontex);
              LinearLayout lytbutton = new LinearLayout(Mcontex);
              lytbutton.setBackgroundResource(R.color.black);
  
  
  
              lytbutton.setBackgroundResource(R.color.black);
              lytdate.setBackgroundResource(R.color.black);
              lytmain.setBackgroundResource(R.color.black);
              Button btnset = new Button(Mcontex);
              Button btncancel = new Button(Mcontex);
  
  
              btncancel.setShadowLayer(2, 1, 1, R.color.black);
              btnset.setShadowLayer(2, 1, 1, R.color.black);
              btnset.setBackgroundResource(R.drawable.black_button);
              btncancel.setBackgroundResource(R.drawable.black_button);
  
              btnset.setTextColor(Mcontex.getResources().getColor(R.color.white));
              btncancel.setTextColor(Mcontex.getResources().getColor(R.color.white));
              btncancel.setTextSize(15);
              btnset.setTextSize(15);
              btnset.setText("Régler");
              btncancel.setText("Décommander");
  
              btnset.setGravity(Gravity.CENTER);
              btncancel.setGravity(Gravity.CENTER);
  
              final WheelView month = new WheelView(Mcontex);
              final WheelView year = new WheelView(Mcontex);
              final WheelView day = new WheelView(Mcontex);
  
              lytdate.addView(day, new LayoutParams(
                      android.view.ViewGroup.LayoutParams.WRAP_CONTENT,
                      android.view.ViewGroup.LayoutParams.WRAP_CONTENT, 1.2f));
              lytdate.addView(month, new LayoutParams(
                      android.view.ViewGroup.LayoutParams.WRAP_CONTENT,
                      android.view.ViewGroup.LayoutParams.WRAP_CONTENT, 0.8f));
  
              lytdate.addView(year, new LayoutParams(
                      android.view.ViewGroup.LayoutParams.WRAP_CONTENT,
                      android.view.ViewGroup.LayoutParams.WRAP_CONTENT, 1f));
              requestWindowFeature(Window.FEATURE_NO_TITLE);
  
  
  
              lytbutton.addView(btnset, new LayoutParams(
                      android.view.ViewGroup.LayoutParams.WRAP_CONTENT,
                      android.view.ViewGroup.LayoutParams.WRAP_CONTENT,1.5f));
  
              lytbutton.addView(btncancel, new LayoutParams(
                      android.view.ViewGroup.LayoutParams.WRAP_CONTENT,
                      android.view.ViewGroup.LayoutParams.WRAP_CONTENT, 1.5f));
  
  
              lytbutton.setPadding(5, 5, 5, 5);
              lytmain.addView(lytdate);
              lytmain.addView(lytbutton);
  
              setContentView(lytmain);
  
              getWindow().setLayout(LayoutParams.FILL_PARENT,
                      LayoutParams.WRAP_CONTENT);
  </code></pre>