/** * Reads the historical data if necessary which is it has changed, there is a history file, and * there is not persist in progress. * * @return Whether reading was performed. */ private boolean readHistoricalDataIfNeeded() { if (mCanReadHistoricalData && mHistoricalRecordsChanged && !TextUtils.isEmpty(mHistoryFileName)) { mCanReadHistoricalData = false; mReadShareHistoryCalled = true; readHistoricalDataImpl(); return true; } return false; }