效果圖：

https://github.com/vvinner/BadgeView

★★★★★★★★★有用的話Star一下★★★★★★★★★

使用方式：

<com.porster.badgeview.badgeview.BadgeTextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:drawableTop="@mipmap/ic_launcher"
        android:gravity="center"
        android:text="Hello World"
        app:badge_count="1"
        app:badge_color="#20A6EF"
        app:badge_padding_right="20dp"
        app:badge_padding_top="20dp"
        app:badge_none_show="true"
        />
 

BadgeTextView.
            setBadgeColor(Color.RED).
            setCount(99).
            setShown(true);//Defualt true