Develop Reference

Wrong Khmer Unicode string

I have problem with displaying Khmer Unicode in most of Android project. What I want to display is អ៊ីមែល but the result return with unexpected value.
I also try with custom font in Khmer and support encoding as utf-8 but it still return the same result.
I'm not sure it is because of font or Android not support Khmer Unicode very well for now.
Any help anyone?

Likely link to font face that you are using, are you using. Here are some example, are you using Nokora, right?
And I could see also for Google web font, the written is the same:
So please check the correct font face before using, even in Noto google font face also, some are correct, some not correct too for that written.

Arabic fonts for Android

I am new in android world. I have issue with arabic font on android device they overlap each other . And some of them are unreadable please help where i am wrong or provide some solution for it.

I used Cavorting.otf downloaded from google and worked fine for me. I also increased font size to 25sp so it can be readable easily. I recommend you to increase the font size then try changing different fonts.

Braille in android (IDE: Eclipse)

I am writing an application in android to convert english text to braille. How can I do this? Is there any font that I can download to convert english letters entered by user to Braille or is there any other way to do this?
Any support provided will indeed be appreciated!

There are many braille fonts on http://www.fontspace.com/category/braille.
But what do you really want to do ? Only display an equivalent in braille ? or make a tactile gadget to translate the text in braille ?
To add a font, use :
Typeface typface=Typeface.createFromAsset(getAssets(),"fonts/YOURFONT.ttf");
and put your font in the asset directory

How does the Apple color emoji font work, and is there an Android version?

I saw that on iPhone there is a truetype font called Apple Color Emoji. It contains the emoticons that exist on iPhones which can be used in any application.
I wonder:
How is this font displayed in multicolor?! Truetype fonts can only include black and white glyphs.
Can this font, or one like it, be used on Android phones?

Apple is using a proprietary extension to the OpenType standard. Basically, they just store pre-rasterized color PNGs in a proprietary extension "block" within the TTF file (reference, corroboration).
The only reason this works is because they also provide the full stack between that font extension and the screen (font rasterization, system graphics library, text rendering widgets). There's no standardized way to accomplish this across all platforms/libraries.

The font uses embedded PNGs and they are stored in a sbix table.
Apple Color Emoji cannot be used in Android, but a Google CBLC/CBDT formatted font can.
There are four methods for implementing color in Open Type fonts right now:
Apple's SBIX - Embedded PNGs
Google's CBLC+CBDT - Embedded PNGs
Microsoft's COLR+CPAL - Colored glyphs
Adobe/Mozilla/W3C's SVG+CPAL - SVG in OpenType
The complete list of OpenType tables.
You can disassemble/reassemble the font using ttx from FontTools(pypi, github) for more details.

supporting non-english characters in android

I want to know that how good is android when supporting non-english characters? Is it possible to embed fonts in my app and make the app to use that font?

The system fonts already support Unicode language very well (as well as Eclipse, but you will have to select new encoding when saving, Eclipse will confirm this).
You can embed your fonts as well. Look at this tutorial and this discusstion.
More information: I'm working on Vietnamese. The system is perfect for Vietnamese, and I think it is for other languages, too.

FYI the emulator with android 2.3.3 support hebrew characters.
But you can use your own fonts if you want.
Place them in the res/assets folder, then
TextView txt = (TextView) findViewById(R.id.custom_font);
Typeface font = Typeface.createFromAsset(getAssets(), "my_font.ttf");
txt.setTypeface(font);

I'm a developer for a japanese company and i've hadno problems with japanese characters even on devices set for english. However, if you want to use custom fonts, use vvieux's code :)