3rd year 1st tream project on Android bangla soft keyboard

1. Software Development Project – II
CSE - 3200
GingerBread
Bangla
KeyBoard
1

2. MahTab Ahmed
(0907006)
Kaidul Islam
(0907016)
Supervised by:
Bishnu Sarker
Lecturer
Dept. of Computer Science & Engineering
Khulna University of Engineering &
Technology, Khulna
2

3. The things motivate us to work
on an old idea ?
 There are several Bangla keyboards on
android in the market already and those are
used also.
So
It might be a question on mind why we have
reinvented the wheel ?
3

4. The things motivate us to work
on an old idea ?
 In market, there are three major keyboards
are now available.
The old of them is Mayabi Keyboard which
has both an fixed and phonetic layout and
was widely popular on those early years
4

5. Mayabi KeyBoard
Phonetic Layout Fixed Layout
5

6. Mayabi KeyBoard
 This can be used to write Bangla/Bengali in Bangla
supported device (E.g. XPERIA)
Main features:
* Swipe space bar to change language.
* Bangla fixed layout keyboard.
* Bangla phonetic keyboard
* English keyboard.
* Bangla and English dictionary for word
prediction.
* Many smilies.
* Many symbols.
6

7. Limitations of Mayabi
But………..
The google play page states that –
“This keyboard will not work on your
phone if your phone does not support Bangla
font viewing/rendering.”
 That’s a Big problem. This means this
keyboard can’t render Bangla on a large amount
of device
7

8. Ridmik Keyboard
 The Keboard Better than Mayabi can be said
Ridmik Keyboard
 It has a large extent of features :
 Bangla phonetic keyboard (like your favorite Avro
keyboard).
 Bangla Unijoy National layout (giving enough space for a
key to let you press on)
 Bangla & English word prediction/suggestion for faster
writing
 7 themes including Gingerbread, ICS & the Ridmik theme
5. Swipe Space bar to change mode (English, Bangla, Unijoy)
8

9. Ridmik Keyboard
English Layout Fixed Layout
9

10. Limitations of Ridmik Keyboard
 The problem of this is also Bangla Rendering
 Also the fixed keyboard Layout is not user
friendly for windows users
 Bangla is not rendered properly with its own
rendering engine
 So many users with poor configuration device
can’t get the usability.
10

11. Projonmo KeyBoard
 This is developed by one of the
undergraduate team of KUET
 Fulfill many features that lack on the other
two keyboard e.g. Bangla Rendering
 Has introduced some new new technique
e.g. text to image replacement for fixed layout
 Has introduced an user friendly Layout like
QWERTY format which is pretty much feasible.
11

12. Limitations of Projonmo
 Bangla Rendering Engine has critical test case
some problems
 Word Suggestion is poor and has no enriched
dictionary
 Word suggestion Manipulation is pretty much
time consuming and inefficient
 provides poor UI
12

13. Projonmo KeyBoard
English Layout
Bangla Layout 13

14. Our KeyBoard
 It seems that each keyboard has some
limitations which provides a bad user
experience
 Gingerbread Bangla Keyboard is introduced
to fulfill these lackings
 It is based on the open source project of
English Gingerbread Keyboard of Steven Lin
14

15. What it Provides ?
15

16. In End User Term
 It provides –
 Bangla Fixed & Phonetic Layout, English
layout.
Rich User Interface
 Capability of writing in different
keyboard mode without switching in
other application
 provides faster experience
16

17. In End User Term
 It provides –
 a large extent of user configuration
17

18. End user Term
 provides different layout for landscape
and normal orientation
18

19. Layout
19

20. End User Term
 Offers pop up key selection along
with MULTI-TOUCH support
20

21. End User Term
 provides Bangla And English word
suggestions
21

22. Fixed Layout Format
22

23. In Higher Term
 It provides –
 well optimized Dictionary Searching
Algorithm i.e. suffix Trie
 some portion is implemented in
Native C++ for faster usability and time
efficiency
 Binary Dictionary is used which is built
in JSON for faster manipulation
23

24. In Higher Term
 It provides –
 implements Standard Android IME
lifecycle
 works with primary code instead of
unnecessary key mapping
24

25. IME Life Cycle
25

26. Limitations
 Is slow in some perspective for
unnecessary checking
 has no different themes
26

27. Future Plan
We will launch this on google market. In
this perspective it is now in intermediate
phase.
To optimize the keyboard By reducing
time and space complexity.
 To extend the fixed keyboard in such a
way that it can take JUKTAKKHOR at one
key stroke.
27

28. Reference
 Android GingerBread KeyBoard
Source:https://github.com/g1011999/Gingerbread-
Keyboard
Author : Steven Lin
 Android Developer Website
IME Life Cycles
Source:http://developer.android.com/guide/topics/t
ext/creating-input-method.html
28

29. Thank you
29