Android UI and Resources
Views, Layouts, RecyclerView, resources and internationalization
1What is the difference between View and ViewGroup?
What is the difference between View and ViewGroup?
Jawaban
View is the base class for all UI components (Button, TextView, ImageView, etc.). ViewGroup is a subclass of View that contains other Views (or ViewGroups). ViewGroups are layout containers: LinearLayout, RelativeLayout, ConstraintLayout, FrameLayout, etc.
2What is the LayoutInflater?
What is the LayoutInflater?
Jawaban
LayoutInflater is used to convert an XML layout file into corresponding View objects. It's essential in onCreate() with setContentView(), in Adapters to create list items, and in Fragments. Method: LayoutInflater.from(context).inflate(R.layout.my_layout, parent, false).
3Which Layout organizes Views in horizontal or vertical line?
Which Layout organizes Views in horizontal or vertical line?
Jawaban
LinearLayout organizes its children in a single line (horizontal with android:orientation='horizontal' or vertical with 'vertical'). It's the simplest layout. You can control distribution with layout_weight to distribute available space.
Which Layout allows positioning Views relative to each other?
Which Layout is recommended by Google for complex interfaces?
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