View, ViewGroup, Activity View vs ViewGroup ViewGroup ViewGroup ViewGroup View View ViewGroup • addView(), getChildCount(), getChildAt() • LinearLayout (orientation, weight(Sum), gravity) • FrameLayout • RelativeLayout (+@id/… vs @id/…) View • TextView, EditText, ImageView, Button, … • … a dalších 110 • findViewById() (ButterKnife) Příklad • Layouty • XML vs Java atributy 90x90dp TextView EditText Activity • startActivity() • startActivityForResult() • finish() ListView • Vertikální scrollovací prvek • ViewGroup • (ScrollView ?!?) Adapter • ArrayAdapter, SimpleCursorAdapter • BaseAdapter ListView ListAdapter Příklad • ViewHolder • viewType • OnItemClickListener • Header + Footer