How to display this colon format of emoticons in Ionic 3 - ionic-framework

I can not display this format (:fearful::stuck out tongue::persevere::sweat:) of emoticon using Ionic 3.
When I use this format, it can not turn them into an emoticon, it always remains in plain text, why is that and how can I fix it?

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itextsharp not showing hindi fonts correctly

We have created PDF using itext sharp in which we are display hindi text, but in pdf some text is coming correctly whereas some text is not showing in correct way. any help?
we are expecting to show hindi text in correct format
iTextSharp does not support Hindi at all. What you can do is add a Hindi Font that you can find online maually to your setup. this is described here: International text in iTextSharp

Flutter - highlight the words that is typing

When input some language that cannot input a word directly by English keyboard, like Chinese, Japanese. They use romanization to help.
For example, when input a word 你好 which is hello In English. You should input nihao .
And the result is that the words that is inputing is highlighted to indicate that you are typing the words currently.
Two images at the end, shows the effect. First is in native iOS, the highlight style is change the background color to light blue,
Second is in Flutter, the style is underscore.
I want to know in flutter, how to custom the style.
Thank you !
native iOS flutter

Change Length of PDF form AcroField using iText

I am filling pdf template using iText api. I am not able proper text in one textfield.
It has boxes like this image.I have to fill one character in each box. When I am trying to set value it taking whole value in initial 3 box only.
Can anybody guide me how can I achieve this ?

Formatting text in a list in app inventor 2

I have a list that I want to display some text as bold and other parts not bold. First of all I have been accomplishing this when not inside of a list by just making a bunch of labels and then manually going through the text adding \n and spaces for formatting, which takes forever. If there is an easier way of doing that I would love to know. Anyway my question is how can I add formatted text to a list.
So instead of those individual text elements I want to add multiple formatted text elements in place of one.
how can I add formatted text to a list
sorry, that's unfortunately not possible with App Inventor
you can take a look at this App Inventor Classic example, which uses some HTML to do the formatting

Adding rich text in localizable.strings

Is it possible to add some sort of styling to my localizable.strings file.
For example
"HELLO_WORLD" = "Hello \bold WORLD \bold";
No, it is not possible. Localized strings can be used in many places in your code and UI, only some of which may support display of rich text. For example, a UILabel has a text property that you can set from a localized string but it has no capability of showing rich text.
You will need to choose some way of displaying rich text in your UI then decide how you are going to encode that text in a localized string. You may end up having to parse the localized string and do custom text drawing depending on where and how you want to display the text.