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From "Erik J. Thomas" <e...@linqto.com>
Subject How to display a unicode char (emoji) in TLF (RichEdit control)
Date Mon, 17 Apr 2017 22:22:30 GMT
Hey all:

Do you have any idea how I can display this Unicode character U+1F601 <https://apps.timwhitlock.info/unicode/inspect/hex/1F601>
or these UTF-8 Bytes \xF0\x9F\x98\x81 using TLF (in RichEdit control)?



For additional background on my problem, read on...

I'm implementing a mobile social media feed display using TLF (spark RichText) to display
inline emoji. The user enters a short message into a TextInput control on the phone, and using
the soft keyboard selects emoji keyboard, selects an emoji to display with the text and posts
their update.

Getting the text from the user works fine and the emoji is represented as UTF or Unicode value
though I don't know how to verify.

The TextInput control on the device shows the emoji rendering perfectly (spark TextInput):

The value in the IntelliJ debugger's Variables view also renders the Unicode or UTF bytes

But when I attempt to set the contents of the RichText control with the contents of the input
field, the emoji is lost:

I have tried many approaches, some are:
var value:String = textInput.text; // this contains the emoji:
richEditControl.text = value;

richEditControl.textFlow = TextFlowUtil.importFromString(value);

richEditControl.textFlow = TextConverter.importToFlow(value, TextConverter.TEXT_FIELD_HTML_FORMAT);

richEditControl.textFlow = TextConverter.importToFlow(value, TextConverter.PLAIN_TEXT_FORMAT);
They each fail to display the emoji. I can display complex content in the same control no
problem and I'm pretty familiar with TLF:

I want to deal with HTML markup and TextConverter rather than composing the TLF in code, but
if I have to go that route, I'm willing to if it works.

But getting the RichText control's TextFlow to display a UNICODE character is a mystery to
me and googling for answers has not been fruitful.

I understand there is some question of whether Android phones will display the equivalent
emoji as on iPhone, I get that. But looking at this chart, it should be possible for the most

https://apps.timwhitlock.info/emoji/tables/unicode <https://apps.timwhitlock.info/emoji/tables/unicode>

My problem should be a simple as just learning how to display this Unicode character U+1F601
<https://apps.timwhitlock.info/unicode/inspect/hex/1F601> or these UTF-8 Bytes \xF0\x9F\x98\x81
using TLF. Is it possible? Thanks! Erik

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