GridView is an extension of ListView that displays items in a grid format. It allows better screen usage on tablets. Key attributes control column width, spacing, and smooth scrolling. The choice mode can be set to multiple choice to enable multi-select using a contextual action bar (CAB). When long pressing items, the CAB activates and the same action can be applied to multiple selected items.

1. GridView i CAB

2. Što i kako?
●Poopćenje ListView-a
– Slaže kolekciju itema u tablicu (za 1 stupac
dobijemo ListView)
●Kao i ListView
– Implementira se adapter
– Postavi se adapter nad GridViewom
●Omogućava bolju iskoristivost ekrana kod tableta
●Varijabilan broj stupaca

4. Bitni atributi
●android:numColumns="auto_fit"
●android:columnWidth="150dp"
●android:verticalSpacing="15dp"
●android:horizontalSpacing="10dp"
●android:smoothScrollbar="true"
●android:stretchMode="spacingWidth"
●android:choiceMode="multipleChoiceModal"

5. CAB
●Omogućava izvršavanje iste akcije nad više
elemenata odjednom
●Aktivira se dugim klikom na item
●ChoiceMode treba biti postavljen na
MultipleChoiceModal (programatski ili u xml-u)
●gridView.setMultiChoiceModeListener()
●Potrebno implementirati
AbsListView.MultiChoiceModeListener()
●Dobar primjer: Gallery

8. Materijali i reference
●GridView
– http://developer.android.com/guide/topics/ui/layout/gridview.html
– http://developer.android.com/reference/android/widget/GridView.html/
– http://www.technotalkative.com/android-gridview-1001-attributes-to-keep-
in-mind/
●ActionBar
– http://developer.android.com/guide/topics/ui/actionbar.html
– http://jgilfelt.github.io/android-actionbarstylegenerator/
●Menus
– http://developer.android.com/guide/topics/ui/menus.html#CAB