Question

我正在尝试插入一些数据sqlite数据库...我确信插入查询是正确的，因为我测试了来自终端和sqlite管理器，但它没有从ios5插入...请帮助!!!

-(BOOL)insertWithRawQuery:(NSString*) query
{
        sqlite3_stmt    *statement;
        BOOL success = NO;
        if (sqlite3_open([databaseFilePath UTF8String], &database) == SQLITE_OK)
        {
            NSLog(@"%@",query);
            const char *insert_stmt = [query UTF8String];

            sqlite3_prepare_v2(database, insert_stmt, -1, &statement, NULL);
            if (sqlite3_step(statement) == SQLITE_DONE)
            {
                success=YES;
            } else 
            {
                success=NO;
                NSLog(@"%d",sqlite3_step(statement));
            }
            sqlite3_finalize(statement);
       }
         sqlite3_close(database);
        return success;
}

    NSLog(@"%d",sqlite3_step(statement))

打印21这是SQLITE_MISUSE ..你有什么想法吗？

Answer 1

这就是我在iOS 5中将数据插入sqlite的方式，它运行正常。

-(void) checkAndCreateDatabase{
    BOOL success;
    NSFileManager *fileManager = [NSFileManager defaultManager];
    success = [fileManager fileExistsAtPath:databasePath];
    if(success) return;
    NSString *databasePathFromApp = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:databaseName];
    [fileManager copyItemAtPath:databasePathFromApp toPath:databasePath error:nil];
}

-(void) openDatabase
{   
    NSArray *documentsPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentDir = [documentsPaths objectAtIndex:0];   
    databasePath = [documentDir stringByAppendingPathComponent:YOUR_DATABASE_NAME];
    [self checkAndCreateDatabase];  
    if(sqlite3_open([databasePath UTF8String],&database) == SQLITE_OK)
        NSLog(@"Database opened.");
}

-(BOOL)insertDataWithUsername:(NSString*)name withPassword:(NSString*)password withAge:(int)age
{
    [self openDatabase];
    NSString *query = nil;
    query = [NSString stringWithFormat:@"INSERT INTO your_table(name, password, age) Values('%@','%@', %d)", name, password, age];

    sqlite3_stmt *compiledStatement;
    if(sqlite3_prepare_v2(database, [query UTF8String], -1, &compiledStatement, NULL) == SQLITE_OK) 
    {   
        if(SQLITE_DONE != sqlite3_step(compiledStatement))
            NSLog( @"Error while inserting data: '%s'", sqlite3_errmsg(database));
        else NSLog(@"New data inserted");

        sqlite3_reset(compiledStatement);       
    }else
    {
        NSLog( @"Error while inserting '%s'", sqlite3_errmsg(database));
    }
    sqlite3_finalize(compiledStatement);
}

Answer 2

我认为作为参数发送的查询是问题的根源。查询构造可能使用了一些自动释放的变量或其他东西。请使用XCode-＆gt;产品标签 - ＆gt;简介 - ＆GT;选择NSZombie-＆gt;并运行该程序以检查是否有任何用于构造查询的对象是否自动释放。

无法从ios 5在sqlite中插入数据

2 个答案: