توضیحات:

Sundanese Dictionary plugin for Multiling O Keyboard autocorrect and word prediction

Instruction:
​⑴ Install this plugin and Multiling O Keyboard. https://play.google.com/store/apps/details?id=kl.ime.oh
⑵ Run O Keyboard and follow its setup guide.
⑶ Slide space bar to switch languages.

If you have font issue, read this: http://honsoapps.appspot.com/1/ma.html

Wikipedia:
Sundanese /sʌndəˈniːz/[4] (Basa Sunda /basa sʊnda/, in Sundanese script ᮘᮞ ᮞᮥᮔ᮪ᮓ, literally "language of Sunda") is the language of about 39 million people from the western third of Java or about 15% of the Indonesian population

Dialects

Sundanese appears to be most closely related to Madurese and Malay, and more distantly related to Javanese. It has several dialects, conventionally described according to the locations of the people:

Western dialect, spoken in the provinces of Banten & some parts of Lampung,
Northern dialect, spoken in Bogor & northern coastal area of West Java,
Southern or Priangan dialect (Bandung & its surroundings),
Mid-east dialect, spoken in Majalengka & Indramayu,
Northeast dialect, spoken in Kuningan, Cirebon & Brebes (Central Java),
Southeast dialect, spoken in Ciamis, Banjar & Cilacap (Central Java).
Priangan, which covers the largest area of Sunda (Tatar Pasundan in Sundanese), is the most widely spoken type of Sundanese language, taught in elementary till senior-high schools (equivalent to twelfth-year school grade) in West Java and Banten Province.

Writing

Main article: Sundanese alphabet
Sundanese can be written in different writing systems, the Old Sundanese script (Aksara Sunda Kuno) and Pegon in historical times, and in modern times the Latin script and the modern Sundanese script.