Evenly spaced menu items on Toolbar

Question

So I\'ve been trying to implement android.support.v7.widget.Toolbar in my Activity and to make it look similar to the previously supported split ActionBar.

Answer 1

If you create your menu programmatically rather than by inflating from resources, you can do this:

Use the SplitToolbar as mentioned in another answer. Get a reference to the toolbar using FindViewById as normal. If the toolbar does not exist in the layout, the menu functions as a normal non-split version.

import android.content.Context;
import android.support.v7.widget.ActionMenuView;
import android.support.v7.widget.Toolbar;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;

public class SplitToolbar extends Toolbar {
    public SplitToolbar(Context context) {
        super(context);
    }

    public SplitToolbar(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public SplitToolbar(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    public void addView(View child, ViewGroup.LayoutParams params) {
        if (child instanceof ActionMenuView) {
            params.width = LayoutParams.MATCH_PARENT;
        }
        super.addView(child, params);
    }
}

Then in your menu creation code do the following.

@Override
public boolean onPrepareOptionsMenu(Menu menu) {

    if (toolbar != null) {
       toolbar.setContentInsetsAbsolute(0,0);
        menu = toolbar.getMenu();
        toolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
            @Override
            public boolean onMenuItemClick(MenuItem menuItem) {
                // Call back to the original menu code to handle menu clicks
                return onOptionsItemSelected(menuItem);
            }
        });
    }

    // Now build your menu as normal
    menu.clear();

    MenuItem b = menu.add(0, WHATEVER, 0, R.string.WHATEVER);
             b.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
             b.setIcon(R.drawable.ic_menu_encrypt);
    // End of normal menu code

    // Now set the button options.
    if (toolbar != null) {
        int size = menu.size();
        for (int i = 0; i < size; i++) {
            MenuItem item = menu.getItem(i);
            // check if app:showAsAction = "ifRoom"
            if (((MenuItemImpl) item).requestsActionButton()) {
                item.setShowAsAction(SupportMenuItem.SHOW_AS_ACTION_ALWAYS);
            }
        }
    }
    Return true; 
}