Hands-On Android UI Development

Material Design

Since Android was first introduced in 2008, the user interface design has changed radically, from the first early versions of the grey, black, and orange theme, to the Holo theme, which was more of a stylistic change than a fundamental shift in the design language, and eventually culminating in material design. Material Design is more than just a style; it's a design language complete with concepts for navigation, and overall application flow. Central to this idea is the notion of paper and card, the idea that the items on the screen are not simply next to each other but may also be above and below in the third dimension (although this is virtual). This is achieved using the elevation property that is common to all widgets ...