Question

我的应用程序在iOS 7上完美运行，但在iOS 8上，我选择它不能正常工作，我检查了iOS7和iOS8中sqlite3_prepare_v2的返回是不同的，请查看它。

ios7

2014-09-19 09:18:08.841 Mapa Radar[511:60b] Database returned error 0: not an error
2014-09-19 09:18:08.841 Mapa Radar[511:60b] Database returned error 0: not an error
2014-09-19 09:18:08.974 Mapa Radar[511:60b] Accucary  5
2014-09-19 09:18:08.975 Mapa Radar[511:60b] SELECT * FROM Radares WHERE distance2(Latitude, Longitude, -23.111100, -46.849126)<1 ORDER BY distance2(Latitude, Longitude, -23.111100, -46.849126)
2014-09-19 09:18:08.975 Mapa Radar[511:60b] Database returned error 0: not an error

iOS8上

2014-09-19 09:14:51.631 Mapa Radar[609:76761] Database returned error 0: not an error
2014-09-19 09:14:51.633 Mapa Radar[609:76761] Database returned error 0: not an error
2014-09-19 09:14:52.252 Mapa Radar[609:76761] Accucary 65
2014-09-19 09:14:52.258 Mapa Radar[609:76761] SELECT * FROM Radares WHERE distance2(Latitude, Longitude, -23.516678, -47.477784)<1 ORDER BY distance2(Latitude, Longitude, -23.516678, -47.477784)
2014-09-19 09:14:52.259 Mapa Radar[609:76761] Database returned error 0: not an error
2014-09-19 09:14:52.261 Mapa Radar[609:76761] Database returned error 1: no such table: Radares

我得到了完全相同的代码，任何想法的日志？

我选择的代码是..

NSString *qsql= [NSString stringWithFormat:@"SELECT * FROM Radares WHERE distance2(Latitude,  Longitude, %@, %@)<1 ORDER BY distance2(Latitude, Longitude, %@, %@)",lat,longi,lat,longi];

NSLog(@"%@",qsql);

sqlite3_stmt *statement;

NSLog(@"Database returned error %d: %s", sqlite3_errcode(db), sqlite3_errmsg(db));

if (sqlite3_prepare_v2( db, [qsql UTF8String], -1,&statement, nil) == SQLITE_OK)
{
    while (sqlite3_step(statement) == SQLITE_ROW)
    {...

Answer 1

问题是：

我从服务器下载基础并保存在Documents目录中的文件中。直到iOS7，我用来创建de文件路径以保存基础的方法还可以，但显然在iOS8上它不是..它正在保存一个空的数据库..

所以我使用另一种方法来创建文档的路径：

NSArray *paths = NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];

//make a file name to write the data to using the documents directory:
NSMutableString *fileName = [NSMutableString stringWithFormat:@"%@/radares.db",
                             documentsDirectory];


NSLog(@"%@",fileName);

[_dados writeToFile:fileName atomically:YES];

sqlite3_prepare_v2在iOS7和iOS8上获得不同的回报

1 个答案: