Question

我在使用带有故事板的XCode4的iPad应用程序上收到此构建错误：

架构i386的未定义符号：“_ OBJC_CLASS _ $ _ SQLite”，引自：EnterDataViewController.o中的objc-class-ref

我已经在应用程序中找到了我知道的任何地方，做了一个干净的重建，但都无济于事。我不知道错误在说什么。

发生了什么以及如何解决？

更新：这是来自EnterDataVewController.m的相关代码

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//--  set First Responder
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- (BOOL) textFieldShouldReturn:(UITextField *)textField  {

    //  for site data...
    if(textField == txtSiteID)  {
        [txtSTA becomeFirstResponder];
        return true;
    }

    if(textField == txtSTA)  {
        [txtElev becomeFirstResponder];
        return true;
    }

    if(textField == txtElev)  {
        [txtSiteDesc becomeFirstResponder];
        return true;
    }

    if(txtSiteDesc.isFirstResponder)  { 
        SQLite *db = [[SQLite alloc] init];
        [db saveSiteData:(UITextField *) txtSiteID sta:(UITextField *) txtSTA desc:(UITextField *) txtSiteDesc elev: (UITextField *) txtElev ];
        [txtSiteDesc resignFirstResponder];
        return true;
    }

    //  for readings
    if(textField == txtSTA1)  {
        [txtBS becomeFirstResponder];
        return true;
    }

    if(textField == txtBS) {
        [txtFS becomeFirstResponder];
        return true;
    }

    if(textField == txtFS)  {
        [txtDesc becomeFirstResponder];
        return true;
    }

    //    if(textField.isFirstResponder) {  
    if(textField == txtDesc) {  
        SQLite *db = [[SQLite alloc] init];
        [db saveReadings:txtSiteID sta:txtSTA1 bs:txtBS fs:txtFS desc:txtDesc];
        [txtDesc resignFirstResponder];
        return true;
    }

    return YES;
}

//    //--  is this for txtDesc 
//    if(txtDesc.isFirstResponder)  {
//        [txtDesc resignFirstResponder];
//    }
//

NSString *databasePath;
NSString *docsDir;
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//--  save the site data
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- (BOOL) saveSiteData  {


    //  validate all fields
    if(txtSiteID.text.length == 0 || txtSiteDesc.text.length == 0)  {
        [self Alert:@"Missing Site ID and/or Description" andData:@"Reqired fields"];
        return NO;
    }

    if(txtSTA.text.length == 0 || txtElev.text.length == 0)  {
        [self Alert:@"Missing Initial STA and/or Elevation" andData:@"Reqired fields"];        
        return NO;
    }

    //    txtSiteDesc.text = txtSiteDesc.text.re  <----------  remove single quotes  TODO

    //  update d/b
    SQLite *dbCode = [[SQLite alloc] init];  //  instantiate slSQLite
    [dbCode saveSiteData:txtSiteID sta:txtSTA desc:txtSiteDesc elev:txtElev];  //  save site data

    return YES;
}


//++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//--  save the readings
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- (void) saveReadings  {

    //  update d/b
    SQLite *dbCode = [[SQLite alloc] init];  //  instantiate slSQLite
    [dbCode saveReadings:txtSiteID sta:txtSTA1 bs:txtBS fs:txtFS desc:txtDesc];

    return;
}

Answer 1

我发现了问题...在同一个项目中的单独目录中有两（2）个EnterDataVewController.m实例。我不知道为什么会导致这个问题，但是当我删除第二个实例时，它构建时没有任何问题（除了正常情况）。

谢谢大家的建议。我很感激你的时间。

Answer 2

SQLite是你自己独立的类......如果是这样导入它......如果没有尝试在

中导入CoreData框架

构建错误：架构i386的未定义符号？

2 个答案: