How to set Android toolbar height?

<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/toolbarTitle"
android:orientation="vertical"
android:background="@color/black"
android:layout_width="match_parent"
android:fitsSystemWindows="true"
android:minHeight="?attr/actionBarSize" //pay attention here
android:theme="@style/AppTheme"
android:layout_height="wrap_content"> //pay attention here

your ToolBar which is a ViewGroup is wraping its height around its children meaning it will get a fixed size only if the children are measured. your minimum height is around 50 to 60 dip, that is how low your ToolBar will be. so if your children height do not add up to a reasonable big number it will still be <= 50

give it a prefered height android:layout_height="200dp"