DropDown Code

//Inflate the dropdownMenu

    MyDropDownMenu myDropDownMenu = (MyDropDownMenu) findViewById(R.id.mydropdown);

    //Inflate the inner dropdown
    MyDropDownMenu inner1 = (MyDropDownMenu) findViewById(R.id.innerlayout);

    //Create a dropdown inside inner1

    MyDropDownMenu child1 = inner1.setSubLayouts("Child 1" , R.drawable.sampleheader , true , 5 , getResources().getColor(R.color.black)
            , 15 , getResources().getColor(R.color.white) , 12 , MyDropDownMenu.CENTER , true , true , Typeface.NORMAL , R.drawable.dropdowniconn);

    LinearLayout.LayoutParams ll = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT , 300);
    ll.setMargins(5 , 5 , 5 , 5);

    **//Create an ImageView at runtime**

    ImageView imageView = new ImageView(this);
    imageView.setImageResource(R.drawable.lockdoor);
    imageView.setScaleType(ImageView.ScaleType.FIT_XY);
    imageView.setLayoutParams(ll);

    ImageView imageView2 = new ImageView(this);
    imageView2.setImageResource(R.drawable.lockdoor);
    imageView2.setScaleType(ImageView.ScaleType.FIT_XY);
    imageView2.setLayoutParams(ll);


    child1.addToDropDown(imageView);//add the imageView to the dropdown child1 using method addToDropDown(View view).Any views can be added
   
    child1.addToDropDown(imageView2);//adding another imageview.You can add any no of views.
   
    child1.setAllChilds();//setting All the views in child1 hierarchy to the dropdown
   
    child1.setDropDown();//setting up the dropdown(Most Important.O/W dropdown will not work)


    inner1.setAllChilds();//add all the childs to the dropdown.Important to call this method if there are any views in the layout hierarchy.
                          //in my case there is a textview

    inner1.setDropDown();//set the dropdown of inner1

    myDropDownMenu.setAllChilds(); // set all childs for the main dropdown that holds all these childs.Call it at the last

    myDropDownMenu.setDropDown();// setting the dropdown for maindropdown


    **//Creating another dropdown**

    MyDropDownMenu secondMenu = (MyDropDownMenu) findViewById(R.id.secondmenu);
    secondMenu.setChilds(1);//I have one view inside the dropdown.If you want you can add any no of views and specify
                            //the no of views you want to show immediately after expanding the dropdown.
    
    secondMenu.setChilds(5 , false , 0);//setting single choice items.You can choose multichoice also
    
    secondMenu.setOptionsLabel(new String[]{"Daffodil" , "Rose" , "Jasmine" , "Rhododendron" , "Tulip"});//set labels for the items
    
    secondMenu.setAllChilds();//addup all the childs



    **//Creating another DropDown at runtime**

    MyDropDownMenu child2 = new MyDropDownMenu(this,"Child 1" , R.layout.header_layout , true , 5 , getResources().getColor(R.color.black)
            , 15 , getResources().getColor(R.color.white) , 12 , MyDropDownMenu.CENTER , true , true , Typeface.NORMAL , R.drawable.dropdowniconn);

//settingup all the childs

    child2.setAllChilds();
    //setting the dropdown(Important to call)
    child2.setDropDown();
    //adding another view to the dropdown secondMenu
    secondMenu.addToDropDown(child2);
    //setting up all the childs.Call this everytime you add a view
    secondMenu.setAllChilds();
    //set the dropdown.
    secondMenu.setDropDown();


    btn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
          Object[] arr =   secondMenu.getAllSelectedValues();
          for (Object o : arr) {
              Toast.makeText(MainActivity.this, "Selected Value is:" + (String) o, Toast.LENGTH_SHORT).show();
          }
        }
    });