how to access item from another item in toolbar

Question

how to access item from another item in toolbar? For example, if I click on item1, then I need to change item2

@Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.item_left: return true; case R.id.item_button: // если я нажимаю на этот item, то title'ы item_left и item_right должно поменяться местами return true; case R.id.item_right: return true; default: return super.onOptionsItemSelected(item); }

With him it would be easier to understand what kind of decision to advise.
I tried this: MenuItem ileft = (MenuItem) findViewById (R.Id.item_left);

Komdosh komdosh 8,808 13 41 · Accepted Answer · 2017-04-26T15:40:20

You can save a link to the menu in onCreateOptionsMenu , and then through it access the elements.

 public class MainActivity extends Activity { private Menu menu; //... @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); //... this.menu = menu; return true; } private void changeLeftItem() { MenuItem leftItem = menu.findItem(R.id.item_left); leftItem.setTitle("Другое название"); } }

In onOptionsItemSelected specific item passed from it; it will not work to pull out the Menu , so the link is pulled from onCreateOptionsMenu or onPrepareOptionsMenu .
But no one forbids you to override onOptionsItemSelected and onCreateOptionsMenu in the same class.
I did not understand how to pull out the menu: this.menu = menu;
As it is written in the answer, you override the onCreateOptionsMenu method and inside this.menu = menu;

how to access item from another item in toolbar

1 answer 1

More articles: