zConclusion #

Created Sunday 25 October 2020

• LinearLayout does not allow overlapping views.

• RelativeLayout does not allow weights, but it does allow overlap.

• All attributes which set the outsides of a view(i.e don’t affect content) start with layout_.

• Orientation must be specified for a LinearLayout.

• alignRight and layout_alignParentRight are two different things.

• The root view covers the whole screen only if both width and height are set to match_parent.

• For attribute names, spaces are replaced by underscores and hypenated words are written in camelcase.

• Attribute names are actually a type of active voice. This quells ambiguity. e.g layout_toRightOf is better than layout_right which is ambiguous.

• 0dp for weighted children in LinearLayout improves readability.

• Prefer LinearLayout over RelativeLayout unless necessary, KISS.

• All ids, and resource references are simply integers in Java. They are not a special class or data type.

• Reuse code - helps in updates, decreases impact of change etc.
• Start from figuring out the data and logic, then design the app UI.
• Steps for UI design:
  1. Decide the views
  2. Position the views
  3. Style the views
• Get news from the Android Dev Blog.
• Read things, and what they do. If it is required, see how it’s done.
• Not all elements in Android end with view, e.g Button.