Recently when using Xamarin to make an Android app, when you open the app, if you have a new message, you need to display a number hint in the app's Toolbar or on the home page icon. Here to share with you the implementation method, if you have updated the good implementation method, welcome to share.
New message reminders like Twitter clients
Solution: Put the icon and the number hint text in relativelayout or framelayout, put the text in the upper right corner.
Implementation code:
Create a new Xamain Android project, hit the day Main.axml file, first add Toolbar,
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="?attr/actionBarSize"
android:background="?attr/colorPrimary">
</android.support.v7.widget.Toolbar>
To use Toolbar instead of the default ActionBar, use the custom theme to hide the default ActionBar
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Xamarin Android app inside icons on digital tips