private OCRLanguageAdapter initLanguageList() {
OCRLanguageAdapter adapter = new OCRLanguageAdapter(getApplicationContext(), false);
List<OCRLanguage> languages = getAllOCRLanguages(this);
adapter.addAll(languages);
updateLanguageListWithDownloadManagerStatus(adapter);
return adapter;
}
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 updateLanguageListWithDownloadManagerStatus(OCRLanguageAdapter adapter) {
if (adapter != null) {
// find languages that are currently beeing downloaded
Query query = new Query();
query.setFilterByStatus(
DownloadManager.STATUS_RUNNING
| DownloadManager.STATUS_PENDING
| DownloadManager.STATUS_PAUSED);
final DownloadManager dm = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
Cursor c = dm.query(query);
int columnIndex = c.getColumnIndex(DownloadManager.COLUMN_TITLE);
while (c.moveToNext()) {
final String title = c.getString(columnIndex);
adapter.setDownloading(title, true);
}
adapter.notifyDataSetChanged();
c.close();
}
}
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();
}