InflateException: Couldn't resolve menu item onClick handler

Question

I asked this question 6 years ago. In the meantime Android development best practices have changed, and I have become a better developer.

Since then, I have realized

Answer 1

@Override
public boolean onCreateOptionsMenu(Menu menu) 
{
    getMenuInflater().inflate(R.menu.activity_main, menu);

    MenuItem item = menu.findItem(R.id.menu_open);

    if (item == null)
        return true;

    item.setOnMenuItemClickListener
    (
        new MenuItem.OnMenuItemClickListener () 
        { 
            public boolean onMenuItemClick(MenuItem item) 
            { return (showDirectory(item)); }
        } 
    ); 

    return true;
}


public boolean showDirectory (MenuItem item)
{
    CheckBox checkBox = (CheckBox) findViewById (R.id.checkBox1);
    checkBox.setChecked(true);
}