小编tin*_*ead的帖子

嗨,只是想知道是否可能,因为用户正在输入一串数字,以便每隔字符串第5个字符动态添加一个连字符...

任何帮助将不胜感激.

我正在研究我的数据库访问类,试图用sqlite3函数调用数据库,但是我得到了所有这些错误,我只是想知道是否有人在此之前遇到过这些错误,或者他们是否有任何想法为什么他们可能会发生.

Undefined symbols:
  "_sqlite3_finalize", referenced from:
      -[DBAccess getAllMakes] in DBAccess.o
  "_sqlite3_errmsg", referenced from:
      -[DBAccess initalizeDatabase] in DBAccess.o
      -[DBAccess closeDatabase] in DBAccess.o
  "_sqlite3_step", referenced from:
      -[DBAccess getAllMakes] in DBAccess.o
  "_sqlite3_column_text", referenced from:
      -[DBAccess getAllMakes] in DBAccess.o
  "_sqlite3_prepare_v2", referenced from:
      -[DBAccess getAllMakes] in DBAccess.o
  "_sqlite3_open", referenced from:
      -[DBAccess initalizeDatabase] in DBAccess.o
  "_sqlite3_close", referenced from:
      -[DBAccess initalizeDatabase] in DBAccess.o
      -[DBAccess closeDatabase] in DBAccess.o
ld: symbol(s) not found
collect2: ld returned 1 exit status

我正在尝试将一个自定义单元格加载到一个UITableView并且它不断抛出错误

UITableView dataSource必须从tableView:cellForRowAtIndexPath返回一个单元格:

我不知道为什么.我已将我的表视图单元格链接到我的代码中的UITableViewCell定义,但它一直给我这个错误.这是我的代码; 任何帮助将不胜感激.

#import "RegisterDeviceViewController.h"


@implementation RegisterDeviceViewController

@synthesize checkString;
@synthesize cellRegistration;

// The designated initializer.  Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
/*
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization.
    }
    return self;
}
*/


//Change UITableView Style to Grouped
- (id)initWithStyle:(UITableViewStyle)style {
    // Override initWithStyle: if you create the controller programmatically and want to …