Updated list as of Android 5.1:
af_ [Afrikaans]
af_NA [Afrikaans (Namibia)]
af_ZA [Afrikaans (South Africa)]
agq_ [Aghem]
agq_CM [Aghem (Cameroon)]
ak_ [Akan]
ak_GH [Akan (Ghana)]
am_ [Amharic]
am_ET [Amharic (Ethiopia)]
ar_ [Arabic]
ar_001 [Arabic (World)]
ar_AE [Arabic (United Arab Emirates)]
ar_BH [Arabic (Bahrain)]
ar_DJ [Arabic (Djibouti)]
ar_DZ [Arabic (Algeria)]
ar_EG [Arabic (Egypt)]
ar_EH [Arabic (Western Sahara)]
ar_ER [Arabic (Eritrea)]
ar_IL [Arabic (Israel)]
ar_IQ [Arabic (Iraq)]
ar_JO [Arabic (Jordan)]
ar_KM [Arabic (Comoros)]
ar_KW [Arabic (Kuwait)]
ar_LB [Arabic (Lebanon)]
ar_LY [Arabic (Libya)]
ar_MA [Arabic (Morocco)]
ar_MR [Arabic (Mauritania)]
ar_OM [Arabic (Oman)]
ar_PS [Arabic (Palestine)]
ar_QA [Arabic (Qatar)]
ar_SA [Arabic (Saudi Arabia)]
ar_SD [Arabic (Sudan)]
ar_SO [Arabic (Somalia)]
ar_SS [Arabic (South Sudan)]
ar_SY [Arabic (Syria)]
ar_TD [Arabic (Chad)]
ar_TN [Arabic (Tunisia)]
ar_YE [Arabic (Yemen)]
as_ [Assamese]
as_IN [Assamese (India)]
asa_ [Asu]
asa_TZ [Asu (Tanzania)]
az_ [Azerbaijani]
az_ [Azerbaijani (Cyrillic)]
az_AZ [Azerbaijani (Cyrillic,Azerbaijan)]
az_ [Azerbaijani (Latin)]
az_AZ [Azerbaijani (Latin,Azerbaijan)]
bas_ [Basaa]
bas_CM [Basaa (Cameroon)]
be_ [Belarusian]
be_BY [Belarusian (Belarus)]
bem_ [Bemba]
bem_ZM [Bemba (Zambia)]
bez_ [Bena]
bez_TZ [Bena (Tanzania)]
bg_ [Bulgarian]
bg_BG [Bulgarian (Bulgaria)]
bm_ [Bambara]
bm_ML [Bambara (Mali)]
bn_ [Bengali]
bn_BD [Bengali (Bangladesh)]
bn_IN [Bengali (India)]
bo_ [Tibetan]
bo_CN [Tibetan (China)]
bo_IN [Tibetan (India)]
br_ [Breton]
br_FR [Breton (France)]
brx_ [Bodo]
brx_IN [Bodo (India)]
bs_ [Bosnian]
bs_ [Bosnian (Cyrillic)]
bs_BA [Bosnian (Cyrillic,Bosnia and Herzegovina)]
bs_ [Bosnian (Latin)]
bs_BA [Bosnian (Latin,Bosnia and Herzegovina)]
ca_ [Catalan]
ca_AD [Catalan (Andorra)]
ca_ES [Catalan (Spain)]
ca_FR [Catalan (France)]
ca_IT [Catalan (Italy)]
cgg_ [Chiga]
cgg_UG [Chiga (Uganda)]
chr_ [Cherokee]
chr_US [Cherokee (United States)]
cs_ [Czech]
cs_CZ [Czech (Czech Republic)]
cy_ [Welsh]
cy_GB [Welsh (United Kingdom)]
da_ [Danish]
da_DK [Danish (Denmark)]
da_GL [Danish (Greenland)]
dav_ [Taita]
dav_KE [Taita (Kenya)]
de_ [German]
de_AT [German (Austria)]
de_BE [German (Belgium)]
de_CH [German (Switzerland)]
de_DE [German (Germany)]
de_LI [German (Liechtenstein)]
de_LU [German (Luxembourg)]
dje_ [Zarma]
dje_NE [Zarma (Niger)]
dua_ [Duala]
dua_CM [Duala (Cameroon)]
dyo_ [Jola-Fonyi]
dyo_SN [Jola-Fonyi (Senegal)]
dz_ [Dzongkha]
dz_BT [Dzongkha (Bhutan)]
ebu_ [Embu]
ebu_KE [Embu (Kenya)]
ee_ [Ewe]
ee_GH [Ewe (Ghana)]
ee_TG [Ewe (Togo)]
el_ [Greek]
el_CY [Greek (Cyprus)]
el_GR [Greek (Greece)]
en_ [English]
en_001 [English (World)]
en_150 [English (Europe)]
en_AG [English (Antigua and Barbuda)]
en_AI [English (Anguilla)]
en_AS [English (American Samoa)]
en_AU [English (Australia)]
en_BB [English (Barbados)]
en_BE [English (Belgium)]
en_BM [English (Bermuda)]
en_BS [English (Bahamas)]
en_BW [English (Botswana)]
en_BZ [English (Belize)]
en_CA [English (Canada)]
en_CC [English (Cocos (Keeling) Islands)]
en_CK [English (Cook Islands)]
en_CM [English (Cameroon)]
en_CX [English (Christmas Island)]
en_DG [English (Diego Garcia)]
en_DM [English (Dominica)]
en_ER [English (Eritrea)]
en_FJ [English (Fiji)]
en_FK [English (Falkland Islands (Islas Malvinas))]
en_FM [English (Micronesia)]
en_GB [English (United Kingdom)]
en_GD [English (Grenada)]
en_GG [English (Guernsey)]
en_GH [English (Ghana)]
en_GI [English (Gibraltar)]
en_GM [English (Gambia)]
en_GU [English (Guam)]
en_GY [English (Guyana)]
en_HK [English (Hong Kong)]
en_IE [English (Ireland)]
en_IM [English (Isle of Man)]
en_IN [English (India)]
en_IO [English (British Indian Ocean Territory)]
en_JE [English (Jersey)]
en_JM [English (Jamaica)]
en_KE [English (Kenya)]
en_KI [English (Kiribati)]
en_KN [English (Saint Kitts and Nevis)]
en_KY [English (Cayman Islands)]
en_LC [English (Saint Lucia)]
en_LR [English (Liberia)]
en_LS [English (Lesotho)]
en_MG [English (Madagascar)]
en_MH [English (Marshall Islands)]
en_MO [English (Macau)]
en_MP [English (Northern Mariana Islands)]
en_MS [English (Montserrat)]
en_MT [English (Malta)]
en_MU [English (Mauritius)]
en_MW [English (Malawi)]
en_NA [English (Namibia)]
en_NF [English (Norfolk Island)]
en_NG [English (Nigeria)]
en_NR [English (Nauru)]
en_NU [English (Niue)]
en_NZ [English (New Zealand)]
en_PG [English (Papua New Guinea)]
en_PH [English (Philippines)]
en_PK [English (Pakistan)]
en_PN [English (Pitcairn Islands)]
en_PR [English (Puerto Rico)]
en_PW [English (Palau)]
en_RW [English (Rwanda)]
en_SB [English (Solomon Islands)]
en_SC [English (Seychelles)]
en_SD [English (Sudan)]
en_SG [English (Singapore)]
en_SH [English (Saint Helena)]
en_SL [English (Sierra Leone)]
en_SS [English (South Sudan)]
en_SX [English (Sint Maarten)]
en_SZ [English (Swaziland)]
en_TC [English (Turks and Caicos Islands)]
en_TK [English (Tokelau)]
en_TO [English (Tonga)]
en_TT [English (Trinidad and Tobago)]
en_TV [English (Tuvalu)]
en_TZ [English (Tanzania)]
en_UG [English (Uganda)]
en_UM [English (U.S. Outlying Islands)]
en_US [English (United States)]
en_US [English (United States,Computer)]
en_VC [English (St. Vincent & Grenadines)]
en_VG [English (British Virgin Islands)]
en_VI [English (U.S. Virgin Islands)]
en_VU [English (Vanuatu)]
en_WS [English (Samoa)]
en_ZA [English (South Africa)]
en_ZM [English (Zambia)]
en_ZW [English (Zimbabwe)]
eo_ [Esperanto]
es_ [Spanish]
es_419 [Spanish (Latin America)]
es_AR [Spanish (Argentina)]
es_BO [Spanish (Bolivia)]
es_CL [Spanish (Chile)]
es_CO [Spanish (Colombia)]
es_CR [Spanish (Costa Rica)]
es_CU [Spanish (Cuba)]
es_DO [Spanish (Dominican Republic)]
es_EA [Spanish (Ceuta and Melilla)]
es_EC [Spanish (Ecuador)]
es_ES [Spanish (Spain)]
es_GQ [Spanish (Equatorial Guinea)]
es_GT [Spanish (Guatemala)]
es_HN [Spanish (Honduras)]
es_IC [Spanish (Canary Islands)]
es_MX [Spanish (Mexico)]
es_NI [Spanish (Nicaragua)]
es_PA [Spanish (Panama)]
es_PE [Spanish (Peru)]
es_PH [Spanish (Philippines)]
es_PR [Spanish (Puerto Rico)]
es_PY [Spanish (Paraguay)]
es_SV [Spanish (El Salvador)]
es_US [Spanish (United States)]
es_UY [Spanish (Uruguay)]
es_VE [Spanish (Venezuela)]
et_ [Estonian]
et_EE [Estonian (Estonia)]
eu_ [Basque]
eu_ES [Basque (Spain)]
ewo_ [Ewondo]
ewo_CM [Ewondo (Cameroon)]
fa_ [Persian]
fa_AF [Persian (Afghanistan)]
fa_IR [Persian (Iran)]
ff_ [Fulah]
ff_SN [Fulah (Senegal)]
fi_ [Finnish]
fi_FI [Finnish (Finland)]
fil_ [Filipino]
fil_PH [Filipino (Philippines)]
fo_ [Faroese]
fo_FO [Faroese (Faroe Islands)]
fr_ [French]
fr_BE [French (Belgium)]
fr_BF [French (Burkina Faso)]
fr_BI [French (Burundi)]
fr_BJ [French (Benin)]
fr_BL [French (Saint Barthélemy)]
fr_CA [French (Canada)]
fr_CD [French (Congo (DRC))]
fr_CF [French (Central African Republic)]
fr_CG [French (Congo (Republic))]
fr_CH [French (Switzerland)]
fr_CI [French (Côte d’Ivoire)]
fr_CM [French (Cameroon)]
fr_DJ [French (Djibouti)]
fr_DZ [French (Algeria)]
fr_FR [French (France)]
fr_GA [French (Gabon)]
fr_GF [French (French Guiana)]
fr_GN [French (Guinea)]
fr_GP [French (Guadeloupe)]
fr_GQ [French (Equatorial Guinea)]
fr_HT [French (Haiti)]
fr_KM [French (Comoros)]
fr_LU [French (Luxembourg)]
fr_MA [French (Morocco)]
fr_MC [French (Monaco)]
fr_MF [French (Saint Martin)]
fr_MG [French (Madagascar)]
fr_ML [French (Mali)]
fr_MQ [French (Martinique)]
fr_MR [French (Mauritania)]
fr_MU [French (Mauritius)]
fr_NC [French (New Caledonia)]
fr_NE [French (Niger)]
fr_PF [French (French Polynesia)]
fr_PM [French (Saint Pierre and Miquelon)]
fr_RE [French (Réunion)]
fr_RW [French (Rwanda)]
fr_SC [French (Seychelles)]
fr_SN [French (Senegal)]
fr_SY [French (Syria)]
fr_TD [French (Chad)]
fr_TG [French (Togo)]
fr_TN [French (Tunisia)]
fr_VU [French (Vanuatu)]
fr_WF [French (Wallis and Futuna)]
fr_YT [French (Mayotte)]
ga_ [Irish]
ga_IE [Irish (Ireland)]
gl_ [Galician]
gl_ES [Galician (Spain)]
gsw_ [Swiss German]
gsw_CH [Swiss German (Switzerland)]
gsw_LI [Swiss German (Liechtenstein)]
gu_ [Gujarati]
gu_IN [Gujarati (India)]
guz_ [Gusii]
guz_KE [Gusii (Kenya)]
gv_ [Manx]
gv_IM [Manx (Isle of Man)]
ha_ [Hausa]
ha_ [Hausa (Latin)]
ha_GH [Hausa (Latin,Ghana)]
ha_NE [Hausa (Latin,Niger)]
ha_NG [Hausa (Latin,Nigeria)]
haw_ [Hawaiian]
haw_US [Hawaiian (United States)]
iw_ [Hebrew]
iw_IL [Hebrew (Israel)]
hi_ [Hindi]
hi_IN [Hindi (India)]
hr_ [Croatian]
hr_BA [Croatian (Bosnia and Herzegovina)]
hr_HR [Croatian (Croatia)]
hu_ [Hungarian]
hu_HU [Hungarian (Hungary)]
hy_ [Armenian]
hy_AM [Armenian (Armenia)]
in_ [Indonesian]
in_ID [Indonesian (Indonesia)]
ig_ [Igbo]
ig_NG [Igbo (Nigeria)]
ii_ [Sichuan Yi]
ii_CN [Sichuan Yi (China)]
is_ [Icelandic]
is_IS [Icelandic (Iceland)]
it_ [Italian]
it_CH [Italian (Switzerland)]
it_IT [Italian (Italy)]
it_SM [Italian (San Marino)]
ja_ [Japanese]
ja_JP [Japanese (Japan)]
jgo_ [Ngomba]
jgo_CM [Ngomba (Cameroon)]
jmc_ [Machame]
jmc_TZ [Machame (Tanzania)]
ka_ [Georgian]
ka_GE [Georgian (Georgia)]
kab_ [Kabyle]
kab_DZ [Kabyle (Algeria)]
kam_ [Kamba]
kam_KE [Kamba (Kenya)]
kde_ [Makonde]
kde_TZ [Makonde (Tanzania)]
kea_ [Kabuverdianu]
kea_CV [Kabuverdianu (Cape Verde)]
khq_ [Koyra Chiini]
khq_ML [Koyra Chiini (Mali)]
ki_ [Kikuyu]
ki_KE [Kikuyu (Kenya)]
kk_ [Kazakh]
kk_ [Kazakh (Cyrillic)]
kk_KZ [Kazakh (Cyrillic,Kazakhstan)]
kkj_ [Kako]
kkj_CM [Kako (Cameroon)]
kl_ [Kalaallisut]
kl_GL [Kalaallisut (Greenland)]
kln_ [Kalenjin]
kln_KE [Kalenjin (Kenya)]
km_ [Khmer]
km_KH [Khmer (Cambodia)]
kn_ [Kannada]
kn_IN [Kannada (India)]
ko_ [Korean]
ko_KP [Korean (North Korea)]
ko_KR [Korean (South Korea)]
kok_ [Konkani]
kok_IN [Konkani (India)]
ks_ [Kashmiri]
ks_ [Kashmiri (Arabic)]
ks_IN [Kashmiri (Arabic,India)]
ksb_ [Shambala]
ksb_TZ [Shambala (Tanzania)]
ksf_ [Bafia]
ksf_CM [Bafia (Cameroon)]
kw_ [Cornish]
kw_GB [Cornish (United Kingdom)]
ky_ [Kyrgyz]
ky_ [Kyrgyz (Cyrillic)]
ky_KG [Kyrgyz (Cyrillic,Kyrgyzstan)]
lag_ [Langi]
lag_TZ [Langi (Tanzania)]
lg_ [Ganda]
lg_UG [Ganda (Uganda)]
lkt_ [Lakota]
lkt_US [Lakota (United States)]
ln_ [Lingala]
ln_AO [Lingala (Angola)]
ln_CD [Lingala (Congo (DRC))]
ln_CF [Lingala (Central African Republic)]
ln_CG [Lingala (Congo (Republic))]
lo_ [Lao]
lo_LA [Lao (Laos)]
lt_ [Lithuanian]
lt_LT [Lithuanian (Lithuania)]
lu_ [Luba-Katanga]
lu_CD [Luba-Katanga (Congo (DRC))]
luo_ [Luo]
luo_KE [Luo (Kenya)]
luy_ [Luyia]
luy_KE [Luyia (Kenya)]
lv_ [Latvian]
lv_LV [Latvian (Latvia)]
mas_ [Masai]
mas_KE [Masai (Kenya)]
mas_TZ [Masai (Tanzania)]
mer_ [Meru]
mer_KE [Meru (Kenya)]
mfe_ [Morisyen]
mfe_MU [Morisyen (Mauritius)]
mg_ [Malagasy]
mg_MG [Malagasy (Madagascar)]
mgh_ [Makhuwa-Meetto]
mgh_MZ [Makhuwa-Meetto (Mozambique)]
mgo_ [Meta']
mgo_CM [Meta' (Cameroon)]
mk_ [Macedonian]
mk_MK [Macedonian (Macedonia (FYROM))]
ml_ [Malayalam]
ml_IN [Malayalam (India)]
mn_ [Mongolian]
mn_ [Mongolian (Cyrillic)]
mn_MN [Mongolian (Cyrillic,Mongolia)]
mr_ [Marathi]
mr_IN [Marathi (India)]
ms_ [Malay]
ms_ [Malay (Latin)]
ms_BN [Malay (Latin,Brunei)]
ms_MY [Malay (Latin,Malaysia)]
ms_SG [Malay (Latin,Singapore)]
mt_ [Maltese]
mt_MT [Maltese (Malta)]
mua_ [Mundang]
mua_CM [Mundang (Cameroon)]
my_ [Burmese]
my_MM [Burmese (Myanmar (Burma))]
naq_ [Nama]
naq_NA [Nama (Namibia)]
nb_ [Norwegian Bokmål]
nb_NO [Norwegian Bokmål (Norway)]
nb_SJ [Norwegian Bokmål (Svalbard and Jan Mayen)]
nd_ [North Ndebele]
nd_ZW [North Ndebele (Zimbabwe)]
ne_ [Nepali]
ne_IN [Nepali (India)]
ne_NP [Nepali (Nepal)]
nl_ [Dutch]
nl_AW [Dutch (Aruba)]
nl_BE [Dutch (Belgium)]
nl_BQ [Dutch (Caribbean Netherlands)]
nl_CW [Dutch (Curaçao)]
nl_NL [Dutch (Netherlands)]
nl_SR [Dutch (Suriname)]
nl_SX [Dutch (Sint Maarten)]
nmg_ [Kwasio]
nmg_CM [Kwasio (Cameroon)]
nn_ [Norwegian Nynorsk]
nn_NO [Norwegian Nynorsk (Norway)]
nnh_ [Ngiemboon]
nnh_CM [Ngiemboon (Cameroon)]
nus_ [Nuer]
nus_SD [Nuer (Sudan)]
nyn_ [Nyankole]
nyn_UG [Nyankole (Uganda)]
om_ [Oromo]
om_ET [Oromo (Ethiopia)]
om_KE [Oromo (Kenya)]
or_ [Oriya]
or_IN [Oriya (India)]
pa_ [Punjabi]
pa_ [Punjabi (Arabic)]
pa_PK [Punjabi (Arabic,Pakistan)]
pa_ [Punjabi (Gurmukhi)]
pa_IN [Punjabi (Gurmukhi,India)]
pl_ [Polish]
pl_PL [Polish (Poland)]
ps_ [Pashto]
ps_AF [Pashto (Afghanistan)]
pt_ [Portuguese]
pt_AO [Portuguese (Angola)]
pt_BR [Portuguese (Brazil)]
pt_CV [Portuguese (Cape Verde)]
pt_GW [Portuguese (Guinea-Bissau)]
pt_MO [Portuguese (Macau)]
pt_MZ [Portuguese (Mozambique)]
pt_PT [Portuguese (Portugal)]
pt_ST [Portuguese (São Tomé and Príncipe)]
pt_TL [Portuguese (Timor-Leste)]
rm_ [Romansh]
rm_CH [Romansh (Switzerland)]
rn_ [Rundi]
rn_BI [Rundi (Burundi)]
ro_ [Romanian]
ro_MD [Romanian (Moldova)]
ro_RO [Romanian (Romania)]
rof_ [Rombo]
rof_TZ [Rombo (Tanzania)]
ru_ [Russian]
ru_BY [Russian (Belarus)]
ru_KG [Russian (Kyrgyzstan)]
ru_KZ [Russian (Kazakhstan)]
ru_MD [Russian (Moldova)]
ru_RU [Russian (Russia)]
ru_UA [Russian (Ukraine)]
rw_ [Kinyarwanda]
rw_RW [Kinyarwanda (Rwanda)]
rwk_ [Rwa]
rwk_TZ [Rwa (Tanzania)]
saq_ [Samburu]
saq_KE [Samburu (Kenya)]
sbp_ [Sangu]
sbp_TZ [Sangu (Tanzania)]
seh_ [Sena]
seh_MZ [Sena (Mozambique)]
ses_ [Koyraboro Senni]
ses_ML [Koyraboro Senni (Mali)]
sg_ [Sango]
sg_CF [Sango (Central African Republic)]
shi_ [Tachelhit]
shi_ [Tachelhit (Latin)]
shi_MA [Tachelhit (Latin,Morocco)]
shi_ [Tachelhit (Tifinagh)]
shi_MA [Tachelhit (Tifinagh,Morocco)]
si_ [Sinhala]
si_LK [Sinhala (Sri Lanka)]
sk_ [Slovak]
sk_SK [Slovak (Slovakia)]
sl_ [Slovenian]
sl_SI [Slovenian (Slovenia)]
sn_ [Shona]
sn_ZW [Shona (Zimbabwe)]
so_ [Somali]
so_DJ [Somali (Djibouti)]
so_ET [Somali (Ethiopia)]
so_KE [Somali (Kenya)]
so_SO [Somali (Somalia)]
sq_ [Albanian]
sq_AL [Albanian (Albania)]
sq_MK [Albanian (Macedonia (FYROM))]
sq_XK [Albanian (Kosovo)]
sr_ [Serbian]
sr_ [Serbian (Cyrillic)]
sr_BA [Serbian (Cyrillic,Bosnia and Herzegovina)]
sr_ME [Serbian (Cyrillic,Montenegro)]
sr_RS [Serbian (Cyrillic,Serbia)]
sr_XK [Serbian (Cyrillic,Kosovo)]
sr_ [Serbian (Latin)]
sr_BA [Serbian (Latin,Bosnia and Herzegovina)]
sr_ME [Serbian (Latin,Montenegro)]
sr_RS [Serbian (Latin,Serbia)]
sr_XK [Serbian (Latin,Kosovo)]
sv_ [Swedish]
sv_AX [Swedish (Åland Islands)]
sv_FI [Swedish (Finland)]
sv_SE [Swedish (Sweden)]
sw_ [Swahili]
sw_KE [Swahili (Kenya)]
sw_TZ [Swahili (Tanzania)]
sw_UG [Swahili (Uganda)]
swc_ [Congo Swahili]
swc_CD [Congo Swahili (Congo (DRC))]
ta_ [Tamil]
ta_IN [Tamil (India)]
ta_LK [Tamil (Sri Lanka)]
ta_MY [Tamil (Malaysia)]
ta_SG [Tamil (Singapore)]
te_ [Telugu]
te_IN [Telugu (India)]
teo_ [Teso]
teo_KE [Teso (Kenya)]
teo_UG [Teso (Uganda)]
th_ [Thai]
th_TH [Thai (Thailand)]
ti_ [Tigrinya]
ti_ER [Tigrinya (Eritrea)]
ti_ET [Tigrinya (Ethiopia)]
to_ [Tongan]
to_TO [Tongan (Tonga)]
tr_ [Turkish]
tr_CY [Turkish (Cyprus)]
tr_TR [Turkish (Turkey)]
twq_ [Tasawaq]
twq_NE [Tasawaq (Niger)]
tzm_ [Central Atlas Tamazight]
tzm_ [Central Atlas Tamazight (Latin)]
tzm_MA [Central Atlas Tamazight (Latin,Morocco)]
ug_ [Uyghur]
ug_ [Uyghur (Arabic)]
ug_CN [Uyghur (Arabic,China)]
uk_ [Ukrainian]
uk_UA [Ukrainian (Ukraine)]
ur_ [Urdu]
ur_IN [Urdu (India)]
ur_PK [Urdu (Pakistan)]
uz_ [Uzbek]
uz_ [Uzbek (Arabic)]
uz_AF [Uzbek (Arabic,Afghanistan)]
uz_ [Uzbek (Cyrillic)]
uz_UZ [Uzbek (Cyrillic,Uzbekistan)]
uz_ [Uzbek (Latin)]
uz_UZ [Uzbek (Latin,Uzbekistan)]
vai_ [Vai]
vai_ [Vai (Latin)]
vai_LR [Vai (Latin,Liberia)]
vai_ [Vai (Vai)]
vai_LR [Vai (Vai,Liberia)]
vi_ [Vietnamese]
vi_VN [Vietnamese (Vietnam)]
vun_ [Vunjo]
vun_TZ [Vunjo (Tanzania)]
xog_ [Soga]
xog_UG [Soga (Uganda)]
yav_ [Yangben]
yav_CM [Yangben (Cameroon)]
yo_ [Yoruba]
yo_BJ [Yoruba (Benin)]
yo_NG [Yoruba (Nigeria)]
zgh_ [Standard Moroccan Tamazight]
zgh_MA [Standard Moroccan Tamazight (Morocco)]
zh_ [Chinese]
zh_ [Chinese (Simplified Han)]
zh_CN [Chinese (Simplified Han,China)]
zh_HK [Chinese (Simplified Han,Hong Kong)]
zh_MO [Chinese (Simplified Han,Macau)]
zh_SG [Chinese (Simplified Han,Singapore)]
zh_ [Chinese (Traditional Han)]
zh_HK [Chinese (Traditional Han,Hong Kong)]
zh_MO [Chinese (Traditional Han,Macau)]
zh_TW [Chinese (Traditional Han,Taiwan)]
zu_ [Zulu]
zu_ZA [Zulu (South Africa)]
Original Answer :
从Android 5.0开始，BCP 47中的所有语言都可用于应用程序开发(但在给定设备的系统设置中，它们可能不一定可供 Select ).当使用ISO 639-1代码时，资源文件夹的格式为values-xx...，其中xx是ISO-639-1代码.
使用BCP 47个标记时，资源文件夹命名为values-b+xxx...，其中xxx是三个字母的语言代码.
Here's the list for before Android 2.3 (100)
Language / Locale Supported since version English, US (en_US) 1.1 German, Germany (de_DE) 1.1 Chinese, PRC (zh_CN) 1.5 Chinese, Taiwan (zh_TW) 1.5 Czech, Czech Republic (cs_CZ) 1.5 Dutch, Belgium (nl_BE) 1.5 Dutch, Netherlands (nl_NL) 1.5 English, Australia (en_AU) 1.5 English, Britain (en_GB) 1.5 English, Canada (en_CA) 1.5 English, New Zealand (en_NZ) 1.5 English, Singapore(en_SG) 1.5 French, Belgium (fr_BE) 1.5 French, Canada (fr_CA) 1.5 French, France (fr_FR) 1.5 French, Switzerland (fr_CH) 1.5 German, Austria (de_AT) 1.5 German, Liechtenstein (de_LI) 1.5 German, Switzerland (de_CH) 1.5 Italian, Italy (it_IT) 1.5 Italian, Switzerland (it_CH) 1.5 Japanese (ja_JP) 1.5 Korean (ko_KR) 1.5 Polish (pl_PL) 1.5 Russian (ru_RU) 1.5 Spanish (es_ES) 1.5 Arabic, Egypt (ar_EG) 2.3 Arabic, Israel (ar_IL) 2.3 Bulgarian, Bulgaria (bg_BG) 2.3 Catalan, Spain (ca_ES) 2.3 Croatian, Croatia (hr_HR) 2.3 Danish, Denmark(da_DK) 2.3 English, India (en_IN) 2.3 English, Ireland (en_IE) 2.3 English, Zimbabwe (en_ZA) 2.3 Finnish, Finland (fi_FI) 2.3 Greek, Greece (el_GR) 2.3 Hebrew, Israel (iw_IL)* 2.3 Hindi, India (hi_IN) 2.3 Hungarian, Hungary (hu_HU) 2.3 Indonesian, Indonesia (in_ID)* 2.3 Latvian, Latvia (lv_LV) 2.3 Lithuanian, Lithuania (lt_LT) 2.3 Norwegian-Bokmål, Norway(nb_NO) 2.3 Portuguese, Brazil (pt_BR) 2.3 Portuguese, Portugal (pt_PT) 2.3 Romanian, Romania (ro_RO) 2.3 Serbian (sr_RS) 2.3 Slovak, Slovakia (sk_SK) 2.3 Slovenian, Slovenia (sl_SI) 2.3 Spanish, US (es_US) 2.3 Swedish, Sweden (sv_SE) 2.3 Tagalog, Philippines (tl_PH) 2.3 Thai, Thailand (th_TH) 2.3 Turkish, Turkey (tr_TR) 2.3 Ukrainian, Ukraine (uk_UA) 2.3 Vietnamese, Vietnam (vi_VN) 2.3*Note that Java uses several deprecated two-letter codes. The Hebrew (“he”) >language code is rewritten as “iw”, Indonesian (“id”) as “in”, and Yiddish (“yi”) as “ji”. This rewriting happens even if you construct your own Locale object, not just for instances returned by the various lookup methods. See also https://issuetracker.google.com/issues/36908826.