count method
获取数据库中的记录数量
Implementation
Future<int> count() async {
final db = await _resolveDatabase();
if (db == null) {
return 0;
}
try {
return await _store.count(db);
} catch (error, stacktrace) {
LogUtil.v('RxNetDataBase: count error: $error\n$stacktrace');
return 0;
}
}