private static List<OCRLanguage> getAllOCRLanguages(Context context) {
List<OCRLanguage> languages = new ArrayList<OCRLanguage>();
// actual values uses by tesseract
final String[] languageValues = context.getResources().getStringArray(R.array.ocr_languages);
// values shown to the user
final String[] languageDisplayValues = new String[languageValues.length];
for (int i = 0; i < languageValues.length; i++) {
final String val = languageValues[i];
final int firstSpace = val.indexOf(' ');
languageDisplayValues[i] =
languageValues[i].substring(firstSpace + 1, languageValues[i].length());
languageValues[i] = languageValues[i].substring(0, firstSpace);
}
final List<Pair<String, Long>> installedLanguages = getInstalledLanguages(context);
for (int i = 0; i < languageValues.length; i++) {
boolean downloaded = false;
long size = 0;
for (Pair<String, Long> installedLang : installedLanguages) {
if (installedLang.first.equalsIgnoreCase(languageValues[i])) {
downloaded = true;
size = installedLang.second;
break;
}
}
OCRLanguage language =
new OCRLanguage(languageValues[i], languageDisplayValues[i], downloaded, size);
if (language.needsCubeData && getCubeFilesForLanguage(language.mValue, context).length == 0) {
language.mDownloaded = false;
}
languages.add(language);
}
return languages;
}
protected void updateLanguageList(String lang, int status) {
for (int i = 0; i < mAdapter.getCount(); i++) {
final OCRLanguage language = (OCRLanguage) mAdapter.getItem(i);
if (language.getValue().equalsIgnoreCase(lang)) {
updateLanguage(language, status);
return;
}
}
}
protected void updateLanguageListByDisplayValue(String displayValue, int status) {
for (int i = 0; i < mAdapter.getCount(); i++) {
final OCRLanguage language = (OCRLanguage) mAdapter.getItem(i);
if (language.getDisplayText().equalsIgnoreCase(displayValue)) {
updateLanguage(language, status);
return;
}
}
}
private void updateLanguage(final OCRLanguage language, int status) {
language.mDownloading = false;
if (status == DownloadManager.STATUS_SUCCESSFUL) {
language.mDownloaded = true;
} else {
language.mDownloaded = false;
runOnUiThread(
new Runnable() {
@Override
public void run() {
String msg = getString(R.string.download_failed);
msg = String.format(msg, language.mDisplayText);
Toast.makeText(OCRLanguageActivity.this, msg, Toast.LENGTH_LONG).show();
}
});
}
mAdapter.notifyDataSetChanged();
}