option_click.xml

bar.setNavigationOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(getApplicationContext(),"Home Clicked",Toast.LENGTH_LONG).show();
            }
});

bar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
    @Override
    public boolean onMenuItemClick(MenuItem item) {
        switch (item.getItemId()){
          case R.id.edit:
            Toast.makeText(getApplicationContext(),"Edit Clicked",Toast.LENGTH_LONG).show();
            break;
          case R.id.home:
            Toast.makeText(getApplicationContext(),"Home Clicked",Toast.LENGTH_LONG).show();
            break;
          case R.id.contact:
            Toast.makeText(getApplicationContext(),"Contact Clicked",Toast.LENGTH_LONG).show();
            break;
         }
     return false;
    }
});