CODEWITHSUNDEEP
androidandroid-actionbar
Bob21
Bob21

Reputation: 167

How to hide icons from ActionBar?

I'm looking to hide a icons from the ActionBar depending on variables. Is there a simple way to do this?

Will I need to use onPrepareOptionsMenu() and if so how?

Upvotes: 1

Views: 113

Answers (2)

tpbapp
tpbapp

Reputation: 2506

To hide menu items you should use the setVisible() method on your menu item inside your activity onPrepareOptionsMenu() override after your menu has been inflated. For example:

@Override
public boolean onPrepareOptionsMenu(Menu menu) {

    MenuInflater inflater = getMenuInflater();

    inflater.inflate(R.menu.example, menu);

    if(showItem) {

        menu.findItem(R.id.icon).setVisible(true);

    } else {

        menu.findItem(R.id.icon).setVisible(false);

    }

    return true;

}

If you have declared your variable inside onCreate(), it will be limited to the scope of onCreate() and therefore inaccessible inside onPrepareOptionsMenu().

For example, instead of this:

@Override
protected void onCreate(Bundle savedInstanceState) {
    boolean showItem = false;
    // ...
}

Declare it like this:

public boolean showItem = false;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // ...
}

Also if you want to change the visibility on button press for example, you will need to call the invalidateOptionsMenu() method to reload the menu.

Upvotes: 2

Libin
Libin

Reputation: 17085

You need to call invalidateOptionsMenu() depending on your variable.

When you call invalidateOptionsMenu() the onPrepareOptionsMenu will be called , where you can hide/show the option menu like this..

 @Override
 public boolean onPrepareOptionsMenu(Menu menu){

  for(int index = 0 ; index < menu.size() ; index ++){
    MenuItem menuItem = menu.getItem(index);
    if(menuItem != null) {
        // hide the menu items 
        menuItem.setVisible(false);
    }
    }
   return super.onPrepareOptionsMenu(menu);
  }

Upvotes: 0

Related Questions