How to implement a badge counter on android hamburger menu icon [duplicate]

问题

This question already has answers here:

Add new item count to icon on button - Android (5 answers)

Closed 3 years ago.

I am trying to implement a counter badge on the hamburger menu icon (i.e. not the other menu icons). Similar to the eBay app. as in..

Has anyone looked into this? Trying to figure out the cleanest way possible.

回答1:

its pretty simple to do with the Toolbar Widget you could follow below example to achieve that:

first create an Oval shape

<shape
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval">
    <solid android:color="#ff00"/>
</shape>

then create a toolbar widget as below:

<android.support.v7.widget.Toolbar
    android:layout_width="match_parent"
    android:layout_height="?actionBarSize"
    android:background="?colorPrimary">

    <FrameLayout
        android:layout_width="wrap_content"
        android:layout_height="match_parent">

        <ImageView
            android:id="@+id/openMenu"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:src="@drawable/ic_menu"/>

        <TextView
            android:id="@+id/badger"
            android:layout_width="16dp"
            android:layout_height="16dp"
            android:layout_gravity="end|right|top"
            android:layout_marginTop="10dp"
            android:background="@drawable/badge"
            android:gravity="center"
            android:text="1"
            android:textColor="@color/white"/>

    </FrameLayout>
</android.support.v7.widget.Toolbar>

来源：https://stackoverflow.com/questions/34633363/how-to-implement-a-badge-counter-on-android-hamburger-menu-icon