Android how to focus ActionBar searchView

Question

Hello i need to put some text inside the searchView and focus/expand the searchView widget.

this is what i tried but it doesn\'t work

@Override
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Answer 1

In case SearchView is made by menu configuration, I expand the action view using menu item.

private var searchMenuItem: MenuItem? = null

// create search menu item
override fun onCreateOptionsMenu(menu: Menu?): Boolean {
    menuInflater.inflate(R.menu.search_menu, menu)
    searchMenuItem = menu?.findItem(R.id.action_search)
    val searchManager = getSystemService(Context.SEARCH_SERVICE) as SearchManager
    (searchMenuItem?.actionView as? SearchView)?.apply {
        setSearchableInfo(searchManager.getSearchableInfo(componentName))
    }
    return super.onCreateOptionsMenu(menu)
}


override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_search)
    setSupportActionBar(findViewById(R.id.toolbar))
    // Execute 'expandActionView' delayed 
    // because I want to focus field only when first start.
    Handler().postDelayed({
        // show field and focus it.
        searchMenuItem?.expandActionView()
    }, 500)
}