Add search icon on action bar android

Question

Good days guys.

I have a search icon in action bar as image below

When it is clicked, I want the action bar change to editText and has a se

Answer 1

You should use inbuilt android SearchView this hold good according Android UI Patterns

menu.xml

Activity code

@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_transaction_search, menu);
        final MenuItem searchItem = menu.findItem(R.id.action_search);

        if (searchItem != null) {
            searchView = (SearchView) MenuItemCompat.getActionView(searchItem);
            searchView.setOnCloseListener(new SearchView.OnCloseListener() {
                @Override
                public boolean onClose() {
                 //some operation
                }
            });
            searchView.setOnSearchClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    //some operation
                }
            });
            EditText searchPlate = (EditText) searchView.findViewById(android.support.v7.appcompat.R.id.search_src_text);
            searchPlate.setHint("Search");
            View searchPlateView = searchView.findViewById(android.support.v7.appcompat.R.id.search_plate);
            searchPlateView.setBackgroundColor(ContextCompat.getColor(this, android.R.color.transparent));
            // use this method for search process
            searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
                @Override
                public boolean onQueryTextSubmit(String query) {
                    // use this method when query submitted
                    Toast.makeText(context, query, Toast.LENGTH_SHORT).show();
                    return false;
                }

                @Override
                public boolean onQueryTextChange(String newText) {
                    // use this method for auto complete search process
                    return false;
                }
            });
            SearchManager searchManager = (SearchManager) getSystemService(SEARCH_SERVICE);
            searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));

        }
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public void onBackPressed() {
        if (!searchView.isIconified()) {
            searchView.setIconified(true);
            findViewById(R.id.default_title).setVisibility(View.VISIBLE);
        } else {
            super.onBackPressed();
        }
    }

make sure to inflate menu :D