The drum set is the instrument central to the rhythm section. It acts as the motor that drives the group. A drum set can contain a multitude of percussion instruments, but in jazz, it usually consists of only a few parts. The lowest drum, or bass drum, is played with a pedal. The hi-hat, also played with a pedal, is a duo of small cymbals that crash together.
A style resource defines the format and look for a UI. A style can be applied to an individual View (from within a layout file) or to an entire Activity or application (from within the manifest file). For more information about creating and applying styles, please read Styles and Themes.
This article explains screen orientation in Android. Android Studio is used to create the sample. The screen orientation attribute is provided by the activity element in the Android Manifest.Xml file. The orientations provided by the activity are Portrait, Landscape, Sensor, Unspecified and so on. To perform a screen orientation activity you define the properties in the Android Manifest.Xml file.