sqlite 没有更新我的数据库 iOS [英] sqlite is not updating my database iOS

问题描述

我正在尝试更新我的 sqlite 数据库，但此代码对我不起作用.请帮我找出问题所在.

I am trying to update my sqlite database but this code is not working for me. Please help me to find what is wrong with this.

-(BOOL)StoreFavourite:(NSString*)fav :(int)DuaId
{
    NSString* mydbpath=[self pathfinder];

    const char *dbpath=[mydbpath UTF8String];
    if(sqlite3_open(dbpath,&database )==SQLITE_OK)
    {

       NSString *query = [NSString stringWithFormat:@"UPDATE Dua SET 
                       favourite=\'%@\' WHERE dua_id=%d ",fav,DuaId];

       const char *query_statement=[query UTF8String];

       if(sqlite3_prepare_v2(database, query_statement, -1, &statement, NULL)==SQLITE_OK)
       {
          while(sqlite3_step(statement) == SQLITE_DONE)
          {
              return YES;
          }
          sqlite3_finalize(statement);
       }
    }
    return YES;

 }

推荐答案

请通过输入 NSLog 检查您的mydbpath".我认为您提供的路径不正确.
也尝试使用:

Please check your "mydbpath" by putting NSLog.I think you have given incorrect path.
Also try to use:

NSString *query = [NSString stringWithFormat:@"UPDATE Dua SET favourite='%@' WHERE dua_id=%d ",fav,DuaId];  

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