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Revision as of 18:26, 11 May 2009 by prakash.raman (Talk | contribs)

Mobile Design Pattern: Sorting

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This design pattern is part of the Mobile Design Patterns series.

Contents

Description

A means of re-ordering a list based on a chosen parameter.


Advantages

  • Increases findability of distinct items within long lists.

Disadvantages

  • Providing an easily discoverable and intuitive sort command can be tricky on small screens.


Use when

  • When a list contains a large number of items.
  • When list items contain complex data and/or multiple associated metadata.

Use how

Provide users with a contextual series of sorting options. On mobile, these are most often presented in the following way:

  • A drop-down menu or toggle located at the top of a table column (primarily used in HTML).


37-sort-by-date.jpg

Figure: Nokia Messaging provides a drop down menu enabling mail sorting by date, subject and sender (open menu not shown). The above list is sorted chronologically by Date.

  • A ‘Sort’ or 'Sort by' command within the Options menu.

38-sort.jpg

Figure: The S60 sort command is available within the Options menu. The active sort method is indicated using a submenu indicator.

  • 'Text based' sorting. Very effective method to sort long list on base of title of items.

Unsorted.gif Sorted.gif

Figure: Shows some contacts in contact list. When user start typing on key pad, list get sorted according to input character sequence.


Design Tips

  • Where possible, provide an indication of the active sort method. This indicator should ideally be on-screen however this may not always be possible due to limited screen real estate. In S60, the active sort parameter is commonly indicated using a sub-menu indicator.
  • Provide the user with an easily discoverable means to revert the list to its default sort order.
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