如何从iphonesqlite数据库获取int数据

我从iphonesqlite获取的数据如下。表中有6条记录

“我的表”中有字段“响应\ Id”、“参与者\ Id”、“回答\选项”、“回答\文本”、“更新\日期\时间”，除响应\ Id和参与者\ Id外，所有字段均为varchar字段）

当我记录数据时，它不会显示任何东西

看看这个问题。查询的所有结果值都在此处定义。 您可以对整数使用

sqlite3\u column\u int

，类似于对文本使用

sqlite3\u column\u text

。查询的所有结果值都在此处定义。

NSNumber *primaryKey = [NSNumber numberWithInt:(int)sqlite3_column_int(selectstmt, 0)];

---

您可以对与文本类似的整数使用

sqlite3\u column\u int

，

sqlite3\u column\u text

是否显示计数为0？它是否向上显示log语句它是否显示count is=0？你能为这次行动详细说明一下吗？谢谢你能为这次行动详细说明一下吗？谢谢

NSNumber *primaryKey = [NSNumber numberWithInt:(int)sqlite3_column_int(selectstmt, 0)];

while(sqlite3_step(selectAllStmt) == SQLITE_ROW)
        {
            NSLog(@"record found");
            char *temp = (char *)sqlite3_column_text(selectAllStmt, 0);
            if (temp!=nil) {
                intId=[[NSString stringWithUTF8String:temp] intValue];
            }
            temp =NULL;
            // [pool release];
        }

+ (void) getInitialDataToDisplay:(NSString *)dbPath {

CereniaAppDelegate *appDelegate = (CereniaAppDelegate *)[[UIApplication sharedApplication] delegate];

if (sqlite3_open([dbPath UTF8String], &database) == SQLITE_OK) {

    const char *sql = "select * from survey_question_responses";
    sqlite3_stmt *selectstmt;
    if(sqlite3_prepare_v2(database, sql, -1, &selectstmt, NULL) == SQLITE_OK) {

        while(sqlite3_step(selectstmt) == SQLITE_ROW) {
    NSInteger primaryKey;
NSInteger intparticipant_Id;


            char *temp = (char *)sqlite3_column_text(selectstmt, 0);
            if (temp!=nil) {
                primaryKey=[[NSString stringWithUTF8String:temp] intValue];
            }
            temp =NULL;
            Coffee *coffeeObj = [[Coffee alloc] initWithPrimaryKey:primaryKey];


temp = (char *)sqlite3_column_text(selectstmt, 1);
            if (temp!=nil) {
                intparticipant_Id=[[NSString stringWithUTF8String:temp] intValue];
            }
            temp =NULL;
                            coffeeObj.participant_Id=intparticipant_Id;

            coffeeObj.answer_option = [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 2)];
            coffeeObj.answer_option = [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 3)];
            coffeeObj.answer_option = [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 4)];
            coffeeObj.answer_option = [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 5)];

            NSString*test=coffeeObj.answer_option;



            [appDelegate.coffeeArray addObject:coffeeObj];

            int count=[appDelegate.coffeeArray count];

            NSLog(test);
            NSLog(@"count is %d",count);


            [coffeeObj release];
        }
    }
    }
else
    sqlite3_close(database); //Even though the open call failed, close the database connection to release all the memory.
  }


Note:- char *temp = (char *)sqlite3_column_text(selectAllStmt, 0);
            if(temp != NULL)
                str = [NSString stringWithUTF8String:temp];
            else
                str = @"";
            temp =NULL;

If you want to take integer then you can do type casting "str = [NSString stringWithUTF8String:temp];" here......