Add new item count to icon on button - Android

Android ViewBadger

A simple way to "badge" any given Android view at runtime without having to cater for it in layout.

Add .jar file in your libs folder

Click to download Example

see Example on github

Simple example:

View target = findViewById(R.id.target_view);
BadgeView badge = new BadgeView(this, target);
badge.setText("1");
badge.show();

Make your badge a TextView, allowing you to set the numeric value to anything you like by calling setText(). Set the background of the TextView as an XML <shape> drawable, with which you can create a solid or gradient circle with a border. An XML drawable will scale to fit the view as it resizes with more or less text.

res/drawable/badge_circle.xml:

<shape xmlns:android="http://schemas.android.com/apk/res/android"
  android:shape="oval">
  <solid
    android:color="#F00" />
  <stroke
    android:width="2dip"
    android:color="#FFF" />
  <padding
    android:left="5dip"
    android:right="5dip"
    android:top="5dip"
    android:bottom="5dip" />
</shape>

You'll have to take a look at how the oval/circle scales with large 3-4 digit numbers, though. If this effect is undesirable, try a rounded rectangle approach like below. With small numbers, the rectangle will still look like a circle as the radii converge together.

res/drawable/badge_circle.xml:

<shape xmlns:android="http://schemas.android.com/apk/res/android"
  android:shape="rectangle">
  <corners
    android:radius="10dip"/>
  <solid
    android:color="#F00" />
  <stroke
    android:width="2dip"
    android:color="#FFF" />
  <padding
    android:left="5dip"
    android:right="5dip"
    android:top="5dip"
    android:bottom="5dip" />
</shape>

With the scalable background created, you simply add it to the background of a TextView, like so:

<TextView
  android:layout_width="wrap_content"
  android:layout_height="wrap_content" 
  android:text="10"
  android:textColor="#FFF"
  android:textSize="16sp"
  android:textStyle="bold"
  android:background="@drawable/badge_circle"/>

Finally, these TextView badges can be placed in your layout on top of the appropriate buttons/tabs. I would probably do this by grouping each button with its badge in a RelativeLayout container, like so:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content">
  <Button
    android:id="@+id/myButton"
    android:layout_width="65dip"
    android:layout_height="65dip"/>
  <TextView
    android:id="@+id/textOne"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignTop="@id/myButton"
    android:layout_alignRight="@id/myButton" 
    android:text="10"
    android:textColor="#FFF"
    android:textSize="16sp"
    android:textStyle="bold"
    android:background="@drawable/badge_circle"/>
</RelativeLayout>

Hopefully that's enough information to at least get you pointed in the right direction!

Just to add. If someone wants to implement a filled circle bubble using the ring shape instead of oval, here's the code example of adding the bubble count to action bar buttons. But this can be added to any button.

(name it bage_circle.xml):

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="ring"
    android:useLevel="false"
    android:thickness="9dp"
    android:innerRadius="0dp"
    >

    <solid
        android:color="#F00"
        />
    <stroke
        android:width="1dip"
        android:color="#FFF" />

    <padding
        android:top="2dp"
        android:bottom="2dp"/>

</shape>

You may have to adjust the thickness according to your need.

The result will be something like this:

Here's the layout for button (name it badge_layout.xml):

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">

    <com.joanzapata.iconify.widget.IconButton
        android:layout_width="44dp"
        android:layout_height="44dp"
        android:textSize="24sp"
        android:textColor="@color/white"
        android:background="@drawable/action_bar_icon_bg"
        android:id="@+id/badge_icon_button"/>

    <TextView
        android:id="@+id/badge_textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignTop="@id/badge_icon_button"
        android:layout_alignRight="@id/badge_icon_button"
        android:layout_alignEnd="@id/badge_icon_button"
        android:text="10"
        android:paddingEnd="8dp"
        android:paddingRight="8dp"
        android:paddingLeft="8dp"
        android:gravity="center"
        android:textColor="#FFF"
        android:textSize="11sp"
        android:background="@drawable/badge_circle"/>
</RelativeLayout>

In Menu create item:

<item
        android:id="@+id/menu_messages"
        android:showAsAction="always"
        android:actionLayout="@layout/badge_layout"/>

In onCreateOptionsMenu get reference to the Menu item:

    itemMessages = menu.findItem(R.id.menu_messages);

    badgeLayout = (RelativeLayout) itemMessages.getActionView();
    itemMessagesBadgeTextView = (TextView) badgeLayout.findViewById(R.id.badge_textView);
    itemMessagesBadgeTextView.setVisibility(View.GONE); // initially hidden

    iconButtonMessages = (IconButton) badgeLayout.findViewById(R.id.badge_icon_button);
    iconButtonMessages.setText("{fa-envelope}");
    iconButtonMessages.setTextColor(getResources().getColor(R.color.action_bar_icon_color_disabled));

    iconButtonMessages.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (HJSession.getSession().getSessionId() != null) {

                Intent intent = new Intent(getThis(), HJActivityMessagesContexts.class);
                startActivityForResult(intent, HJRequestCodes.kHJRequestCodeActivityMessages.ordinal());
            } else {
                showLoginActivity();
            }
        }
    });

After receiving notification for messages, set the count:

itemMessagesBadgeTextView.setText("" + count);
itemMessagesBadgeTextView.setVisibility(View.VISIBLE);
iconButtonMessages.setTextColor(getResources().getColor(R.color.white));

This code uses Iconify-fontawesome.

compile 'com.joanzapata.iconify:android-iconify-fontawesome:2.1.+'

Simplest hack by giving style to TextView only.

        <TextView
                android:id="@+id/fabCounter"
                style="@style/Widget.Design.FloatingActionButton"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentEnd="true"
                android:layout_centerVertical="true"
                android:layout_marginEnd="10dp"
                android:padding="5dp"
                android:text="10"
                android:textColor="@android:color/black"
                android:textSize="14sp" />