Notification Badge On Action Item Android

Question

I wana add a notification badge on the cart image placed in action bar and manipulate it programmatically. Any Help?

Answer 1

You can show custom MenuItem on ActionBar by creating a custom layout for MenuItem. To set a custom layout you have to use menu item attribute app:actionLayout.

Follow below steps to create a Badge on Cart action item. See the attached image for result.

1. Create a custom layout with ImageView(for cart icon) and TextView(for count value)

layout/custom_action_item_layout.xml:

2. Create drawable circular badge background using Shape.

drawable/badge_background.xml:

3. Add custom layout to menu item.

menu/main_menu.xml

4. In your MainActivity, add following codes:

MainActivity.java:

public class MainActivity extends AppCompatActivity {
    ................
    ......................
    TextView textCartItemCount;
    int mCartItemCount = 10;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        .....................
        ............................
    }

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

        final MenuItem menuItem = menu.findItem(R.id.action_cart);

        View actionView = menuItem.getActionView();
        textCartItemCount = (TextView) actionView.findViewById(R.id.cart_badge);

        setupBadge();

        actionView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                onOptionsItemSelected(menuItem);
            }
        });

        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        switch (item.getItemId()) {

            case R.id.action_cart: {
                // Do something
                return true;
            }
        }
        return super.onOptionsItemSelected(item);
    }

    private void setupBadge() {

        if (textCartItemCount != null) {
            if (mCartItemCount == 0) {
                if (textCartItemCount.getVisibility() != View.GONE) {
                    textCartItemCount.setVisibility(View.GONE);
                }
            } else {
                textCartItemCount.setText(String.valueOf(Math.min(mCartItemCount, 99)));
                if (textCartItemCount.getVisibility() != View.VISIBLE) {
                    textCartItemCount.setVisibility(View.VISIBLE);
                }
            }
        }
    }

    ..................
    ..............................

}

OUTPUT: