How to show the menu list by clicking the button?

Question

There is a button in my application, I want to do that if someone click on this button, the menu will show up.

It will be like this menu on the first picture. How to do this?

Answer 1

This is how I implemented showPopUp() function in Kotlin and I followed the same documentation that @umesh mentioned: http://developer.android.com/guide/topics./ui/menus.html#PopupMenu. Then you can call the function in your onClick() function.

     private fun showPopup(v: View) {
         PopupMenu(this, v).apply {
            setOnMenuItemClickListener(object: PopupMenu.OnMenuItemClickListener {
                override fun onMenuItemClick(item: MenuItem?): Boolean {
                    return when (item?.itemId) {

                        R.id.settings -> {
                            dosomething()
                            true
                        }
                        else -> false
                    }
                }

            })
            inflate(R.menu.menu)
            show()
        }
    }