Approach to design UI for Android like most important thing is to understand the requirement in that we have to think the exact user, who is the user, age of the user, the country of the user, second thing we can say which principle we have to use like material design UI is there and the most important thing we can say it is responsive UI or only we are taking the hard-coded value or static value and theme so which theme we have to use which is the suitable thing layout design specially layout we are using the constraint layout because it is flexible and it is efficient we can say and it is adjust the screen wise and most important thing we are thinking about the performance also so like we have to use efficient layouts and that's all
