what is android material design & principles of material design

what is android material design & principles of material design

android material design:

Android visual language it is created by Google,it was introduced in android lollipop version.android material design introduced so many components those are android theme, new widgets, vector images, and animations .. etc.

principles of material design:

Material is the metaphor:
Design should adjust the edges of physical device, user should feel to be in real-world 
core functionality also should work perfectly (events, navigations  etc)

Bold, graphic, intentional:
Everything should be bold and intentional, user should identify the field very easily 
and use best color styles and images for better communication with user 

Motion provides meaning:
UI animations and navigations should work with outbreak continuity 

then only user feels quality of work

more info : guidelines-material-design

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