@Override
public void onStop() {
super.onStop();
// We don't want the list to display the empty state, since when we
// resume it will still be there and show up while the new query is
// happening. After the async query finishes in response to onResume()
// setLoading(false) will be called.
mAdapter.setLoading(true);
mAdapter.changeCursor(null);
}
/**
* Common method for performing a query of the music database, called for both top-level queries
* and filtering.
*
* @param sync If true, this query should be done synchronously and the resulting cursor returned.
* If false, it will be done asynchronously and null returned.
* @param filterstring If non-null, this is a filter to apply to the query.
*/
Cursor doQuery(boolean sync, String filterstring) {
MusicLogUtils.d(TAG, "doQuery(" + sync + ", " + filterstring + ")");
// Cancel any pending queries
mQueryHandler.cancelOperation(MY_QUERY_TOKEN);
StringBuilder where = new StringBuilder();
where.append(MediaStore.Audio.Media.TITLE + " != ''");
if (FeatureOption.MTK_DRM_APP) {
String sIsDrm = MediaStore.Audio.Media.IS_DRM;
String sDrmMethod = MediaStore.Audio.Media.DRM_METHOD;
switch (mDrmLevel) {
case DrmStore.DrmExtra.DRM_LEVEL_FL:
where.append(
" AND ("
+ sIsDrm
+ "!=1 OR ("
+ sIsDrm
+ "=1"
+ " AND "
+ sDrmMethod
+ "="
+ DrmStore.DrmMethod.METHOD_FL
+ "))");
break;
case DrmStore.DrmExtra.DRM_LEVEL_SD:
where.append(
" AND ("
+ sIsDrm
+ "!=1 OR ("
+ sIsDrm
+ "=1"
+ " AND "
+ sDrmMethod
+ "="
+ DrmStore.DrmMethod.METHOD_SD
+ "))");
break;
case DrmStore.DrmExtra.DRM_LEVEL_ALL:
break;
case -1:
// this intent does not contain DRM Extras
where.append(" AND " + sIsDrm + "!=1");
break;
}
MusicLogUtils.d(TAG, "doQuery: where=" + where);
}
// We want to show all audio files, even recordings. Enforcing the
// following condition would hide recordings.
// where.append(" AND " + MediaStore.Audio.Media.IS_MUSIC + "=1");
Uri uri = mBaseUri;
if (!TextUtils.isEmpty(filterstring)) {
uri = uri.buildUpon().appendQueryParameter("filter", Uri.encode(filterstring)).build();
}
if (sync) {
try {
return getContentResolver().query(uri, CURSOR_COLS, where.toString(), null, mSortOrder);
} catch (UnsupportedOperationException ex) {
}
} else {
mAdapter.setLoading(true);
setProgressBarIndeterminateVisibility(true);
mQueryHandler.startQuery(
MY_QUERY_TOKEN, null, uri, CURSOR_COLS, where.toString(), null, mSortOrder);
}
return null;
}