Develop Reference

Converting Numbers to Local (UTF8) Bengali numbers

I am trying to convert the English numbers (1, 2, 3) to Bengali numbers (১, ২, ৩).
For example, if I get 10000, then I want to show like ১০,০০০.
I can replace the number one by one with the Bengali counterpart using replaceAll method
But I want to know if there is an alternative solution to do that instead of the above.

Use this:
val convertedString = String.format(Locale.forLanguageTag("bn"), "%d", 1234567890)

I have used NumberFormat from popular library Intl and converted it easily like below
NumberFormat("##,##,##,###", "bn").format(10000)
And the output is:
১০,০০০

How to set string resource length limit in Android?

It is known that Androd string resources support xliff namespace to annotate non-translatable string formatting placeholders, like this
<string name="max_file_size_exceeded_template">File
<xliff:g example="some_image.jpg" id="file_name">%1$s</xliff:g>
is too big and could not be uploaded.</string>
It helps translators to undestand what parts of string should not be modified. But sometimes I need to annotate some strings max length it they are used in UI control with limited size. What I want is add text length limit to warn translators about this. Something like max-length="24" max-lines="2" length-unit="char" Maybe, xliff supports such thing or it can be achieved in other way.
I use Weblate for translations if it matters.

You can set this in Weblate, the Andoid format does not support this directly.
Click on edit (pencil) icon next to flags on the string.
Enter max-length:LENGTH as check flag.
See also https://docs.weblate.org/en/latest/admin/translating.html#additional-information-on-source-strings

Special characters such as PI, or subscripts on the xml of Android

I am coding a maths app and I want to show special characters such as PI, E, or subscripts and all those things.
I want to show them on the xml file of the layout.
How can I do it?
Thank you guys for all!

You can use the Unicode value for the symbol, preceded by \u. For example, the pi character is "\u03C0"

This site: http://www.dionysia.org/html/entities/symbols.html has list of elements which can be used in xml. Just watch the second element. For example:
square = &#8730
THen you need to conver it. For example:
String symbol = Html.fromHtml(square);
Alternative link is here: http://www.hrupin.com/2011/12/how-to-put-some-special-math-symbols-in-textview-editview-or-other-android-ui-element

The characters in a string resource are unicode. You can include special characters using the \unnnn notation.
There are many places to look up the unicode values on the web. Google found this one for me:
http://inamidst.com/stuff/unidata/

how to add smilies/emotions in my edittext for a notes app in android?

can any one know about how to add/insert emotions/smiles to text(which ever i typed in my edit text for my notes). i have little confusion about if i want to add these smiles of type .png in to edit text type of string, is it possible? and also i have to save these input into sqlite database. normally i know to store string data taken from edit text.
but along with that text i want to also add smiles symbols where ever my cursor placed and to be store in sqlite data base. and get it back to read.
so guys any ideas, most welcome!

Try to use java (i.e. android) spannable method to implement smiley (i.e.) images for that. You will surely get it, search in google for "how to add images/smiley with java spannable method in android?" you will get good idea.

Reading your question the first thing I can think of is Mapping each image to a sequence of letters, for example :) is smiley.png etc. Now your database also has these smaller representation However while reading from the database you can convert those special character sequences to appropriate image.
For simplicity in seraching those Strings You can wrap them in some less used characters i.e. [ or { or <.

Show a bulleted list from Strings.xml file in android

I have a problem that I want to show a bulleted list contents which is resided in strings.xml file as an array elements. Then the problem is that how to convert the array elements in Html List format? Can any one suggest any solution regarding the same.
Thanks in advance

I just put the symbol directly into the strings.xml without any codes or anything:
<string name="msg_sms_no_note">• Notes and attachments will not be sent.</string>

There's a problem with the approach suggested by some of the answers in this thread of prepending the bullet unicode character (i.e. \u2022) to each of the Strings in the String array: You don't get proper indentation when one or more Strings in the String array span multiple lines. What you get is formatting as follows:
In order to get proper indentation, you're better using BulletSpan. In doing so, you'll get formatting as follows:
To use BulletSpan, you need to create a SpannableStringBuilder instance and append each String in your String array to this SpannableStringBuilder instance. As you append each String, call the setSpan(what:start:end:flags:) method on the SpannableStringBuilder instance passing in a BulletSpan instance for the what parameter. You can find an example of this in the appendBulletSpan(...) Kotlin extension function located here.

I think, the most elegant way of doing this is to load a WebView and put your string in it. this way, you use the common ul/li convention and you can style it at your leisure with CSS.

Use the unicode escape sequence "\u2022" in strings.xml
like so:
<string name="menu_new_trip_desc">View them in: \n\u2022 Table