android studio preview does not show toolbar

Brand Logo Image: It may extend to the height of the toolbar and can be arbitrarily wide.Navigation Button: It may be a Navigation menu toggle, up arrow, close, done, collapse or any other glyph of the app’s choosing.In AppCompat, Toolbar is implemented in the 7.widget.Toolbar class. In Material Design Android has updated the AppCompat support libraries so that we can use Toolbar’s in our devices running API Level 7 and up. We can also add labels, logos, navigation icons and other views in it. We can easily modify its color, size and position. Important Note: Toolbar’s are more flexible than ActionBar. A Toolbar may contain a combination of elements from start to end.

Toolbar provides more feature than ActionBar. Material Design brings lot of new features in Android that changed a lot the visual design patterns regarding the designing of modern Android applications.Īn Action bar is traditionally a part of an Activity opaque window decor controlled by the framework but a Toolbar may be placed at any level of nesting within a view hierarchy.

Toolbar was introduced in Material Design in API level 21 (Android 5.0 i.e Lollipop). We can easily replace an ActionBar with Toolbar. Toolbar is a Viewgroup that can be placed at anywhere in the Layout. In Android Toolbar is similar to an ActionBar(now called as App Bars).

ToolBar Tutorial With Example In Android Studio

Android studio preview does not show toolbar