how to set width, heigh icon on toolbar on xamarin android - xamarin

Question

Main.axml
?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<!-- your content layout -->
<RelativeLayout android:layout_width="match_parent"
android:layout_height="match_parent">
<Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:titleTextColor="#android:color/background_light" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" />
</RelativeLayout>
<android.support.design.widget.NavigationView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:id="#+id/nav_view"
app:headerLayout="#layout/drawer_header"
app:menu="#menu/navmenu" />
</android.support.v4.widget.DrawerLayout>
<item
android:id="#+id/menu_share"
android:icon="#drawable/ic_search_white_48dp"
android:showAsAction="ifRoom"
android:title="Search"
/>
</menu>
public override bool OnCreateOptionsMenu(Android.Views.IMenu menu)
{
MenuInflater.Inflate (Resource.Menu.Action_menu, menu);
return base.OnCreateOptionsMenu (menu);
}
I saw that icon's very big. if I set a icon smaller then it don't show clearly icon. So I want to set a big icon but it be set width and heigh smaller.
About width=20dp and heigh too.

Answer 1

The standard icon size for Toolbar items on android is 24dp as described in the Material Icons Guide and in the Icons style guidelines from Google (see clearance section).
So make sure to scale your icon to that size outside of the app or find an icon which has the correct size. Google's own Material Design Icons are a good place to find such icons scaled to the sizes you need.
Alternatively, with Vector Drawables being supported in Android M and in the AppCompat libraries, then you could look into converting your icons into Vector images instead. This will save a lot of space in the app and make them nicely scalable.