title: Unable to add RelativeLayout programmatically
body: <p>I am unable to add a RelativeLayout programmatically to existing xml layout. only xml layout is displaying. Sharing my code</p>
  
  <p>fragment_home.xml:</p>
  
  <pre><code>&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  tools:context="com.timetable.act.MainActivity$PlaceholderFragment" 
  android:id="@+id/homeLayout"
  android:background="@color/white"&gt;  
  
  
  &lt;ImageButton
      android:layout_width="70dp"
      android:layout_height="70dp"
      android:layout_marginTop="380dp"
      android:layout_marginLeft="240dp"
      android:background="@drawable/circle"
      android:id="@+id/addEvent"
      android:src="@drawable/ic_mode_edit_white_24dp"
      android:layout_gravity="right|bottom"
      android:contentDescription="@string/hello" /&gt;
  &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p>PlaceholderFragment.java</p>
  
  <pre><code>@Override
      public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
          View rootView = null;
  
          switch (Integer.valueOf(getArguments().get(ARG_SECTION_NUMBER).toString())) {
          case 1:
              rootView = inflater.inflate(R.layout.fragment_home, container, false);
              displyAllEvent(rootView);
  
              break;
          case 2:
              rootView = inflater.inflate(R.layout.fragment_setting, container, false);
              break;
          default:
              rootView = inflater.inflate(R.layout.fragment_main, container, false);
              break;
          }
          return rootView;
      }
  private void displyAllEvent(View mainView){
          Drawable drawableShadow = ContextCompat.getDrawable(getActivity(),R.drawable.tile_shadow);
  
          RelativeLayout tileLayout = new RelativeLayout(getActivity());
          RelativeLayout.LayoutParams rlp = new RelativeLayout.LayoutParams(
                  RelativeLayout.LayoutParams.MATCH_PARENT,
                  RelativeLayout.LayoutParams.WRAP_CONTENT);
  
          tileLayout.setBackground(drawableShadow);
          tileLayout.setPadding(R.dimen.tilePadding,R.dimen.tilePadding,R.dimen.tilePadding,R.dimen.tilePadding);
          tileLayout.setLayoutParams(rlp);
          tileLayout.setId(999);
  
          RelativeLayout.LayoutParams titleLayout = new RelativeLayout.LayoutParams(
                  RelativeLayout.LayoutParams.MATCH_PARENT,
                  RelativeLayout.LayoutParams.WRAP_CONTENT);
  
          TextView titleView = new TextView(getActivity());
          titleView.setText("Testing title with test");
          titleView.setId(111);
          titleView.setTextColor(R.color.white);
          titleView.setLayoutParams(titleLayout);
  
          tileLayout.addView(titleView);
  
          RelativeLayout.LayoutParams textLeftLayout = new RelativeLayout.LayoutParams(
                  RelativeLayout.LayoutParams.WRAP_CONTENT,
                  RelativeLayout.LayoutParams.WRAP_CONTENT);
          textLeftLayout.addRule(RelativeLayout.BELOW, titleView.getId());
  
          TextView startHView = new TextView(getActivity());
          startHView.setText("left Text");
          startHView.setId(222);
          startHView.setTextColor(R.color.white);
          startHView.setLayoutParams(textLeftLayout);
  
          tileLayout.addView(startHView);
  
          RelativeLayout.LayoutParams textRightLayout = new RelativeLayout.LayoutParams(
                  RelativeLayout.LayoutParams.WRAP_CONTENT,
                  RelativeLayout.LayoutParams.WRAP_CONTENT);
          textRightLayout.addRule(RelativeLayout.BELOW, titleView.getId());
          textRightLayout.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
          textLeftLayout.addRule(RelativeLayout.ALIGN_RIGHT, startHView.getId());
  
          TextView startMView = new TextView(getActivity());
          startMView.setText("Right Text");
          startMView.setId(333);
          startMView.setTextColor(R.color.white);
          startMView.setLayoutParams(textRightLayout);
  
          tileLayout.addView(startMView);
  
          RelativeLayout parentView = (RelativeLayout)mainView.findViewById(R.id.homeLayout);
          parentView.addView(tileLayout);
      }
  </code></pre>
  
  <p>output:
  <a href="https://i.stack.imgur.com/c8uW8.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/c8uW8.jpg" alt="enter image description here"></a></p>