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我有这个问题....下面的代码不会产生错误,但表不会提交更改!我已经控制了所有日志,所有值都是正确的,并且所有 If 测试都很好,但是 db 上的值没有改变。有人有想法吗?谢谢!!

- (void) saveData {
    //database file system
    NSFileManager *fileMgr = [NSFileManager defaultManager];
    NSString *dbPath = [[[NSBundle mainBundle] resourcePath ]stringByAppendingPathComponent:@"enduroRace.sqlite"];
    BOOL success = [fileMgr fileExistsAtPath:dbPath];
    if(!success)
    {
        NSLog(@"unable to load db: '%@'.", dbPath);
    }
    //apro database
    sqlite3 *db;
    if(!(sqlite3_open([dbPath UTF8String], &db) == SQLITE_OK))
    {
        NSLog(@"unable to open DB");
    }
    //inizio query
    sqlite3_stmt    *statement;
    NSString *querySQL = @"UPDATE setting SET delay=?";
    const char *query_stmt = [querySQL UTF8String];
    if (sqlite3_prepare_v2(db, query_stmt, -1, &statement, NULL) == SQLITE_OK) {
        int valoreAttuale = [[sharedClass sharedController] ritardoMusic];
        sqlite3_bind_int(statement, 1,valoreAttuale);
    }
    if (sqlite3_step(statement) != SQLITE_DONE)
    {
        NSLog(@"Error...");
    }
    sqlite3_finalize(statement);
    sqlite3_close(db);

}
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1 回答 1

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我明白了....我已将 Sqlite 数据库复制到“文档”文件夹中,该文件夹不仅是只读的,而且现在是完美的!!!谢谢我!

于 2012-08-13T17:21:46.363 回答