For development of android app what things should be learnt after learning basics of java by solo learn

Answer 1

to start developing apps in android you should know:
1 basic java(variables,data types,arrays ,conditions,loops)
2 java OOP(classes,constructors, objects,abstract classes ,inheritance,polymophism,inner classes,anonymous classes)
3 a little bit of advanced data types(Lists,araylists,HashMaps,Sets etc)
Then you start with android app development
1check the android IDE(android Studio)
2.check activities
3.check the xml code is not really hard
4.check fragments
5.passing between activities
6.passing data between activities
7.go deeper in fragments
8.check the android documentation API
9.learn about gradle dependencies
10.learn about resources folders
11.learn about basic UI components(buttons textviews)
Go to a moderate zone
12.learn MVC and then pass to MVP desing pattern.
13.check listview,recyclerview ,gridview,card view.
And go on learning new stuff there are many youtube tutorials but alaways check the documentation API

Answer 2

xml

Answer 3

Thanks for ur answer