Question

使用 KLCPopup library 当我按下KLCPopup容器中包含的其中一个按钮时，我总是会出现其中一个错误（随机）：

NSInvalidArgumentException', reason: '-[NSISLinearExpression sendPlus:]
（大部分时间）bad_access_exc code=1

这是我在«FindViewController»中调用KLCPopup的代码

AddFeelingViewController *adf = [self.storyboard instantiateViewControllerWithIdentifier:@"AddFeelingView"];
adf.userTo = [_userFetch objectAtIndex:indexPath.row];
adf.controller = self;
adf.view.frame = CGRectMake(0.0, 0.0, 300.0, 250.0);

KLCPopup *popup = [KLCPopup popupWithContentView:[adf view] showType:KLCPopupShowTypeBounceIn dismissType:KLCPopupDismissTypeBounceOut maskType:KLCPopupMaskTypeDimmed dismissOnBackgroundTouch:YES dismissOnContentTouch:NO];

[popup show];

这里是我的«AddFeelingViewController»中的代码：

   - (void)viewDidLoad {

      super viewDidLoad];
      score = 0;

    if([_controller isKindOfClass:[FindViewController class]]){            
       _controller = (FindViewController*)_controller;     
    }else{
       _controller = (HomeViewController*)_controller;

    }

    - (IBAction)sendPlus:(id)sender { 
       score = 1;
    }
    - (IBAction)sendMinus:(id)sender {     
        score = -1;
    }
    - (IBAction)sendFeeling:(id)sender {

        if([_controller isKindOfClass:[FindViewController class]]){
             if(score !=0 ){
               [_controller addNewFriendship:_userTo andScore:score];
             }

        }else{
             //TODO
        }
     }

故事板中的所有内容都很好地链接，如果按钮被链接，它只会崩溃。

有你的想法吗？

Answer 1

我遇到与你的n°2完全相同的错误。发生这种情况是因为执行AddFeelingViewController内的代码后，FindViewController会自动释放。

您的AddFeelingViewController仅在当前作用域中声明（在方法体中），因此一旦方法执行完毕，ARC就会释放它。

要解决此问题，只需将AddFeelingViewController声明为FindViewController的类变量。

在FindViewController.m：

AddFeelingViewController *myAdfController;

@implementation FindViewController

-(void)displayMyAdf{
    myAdfController = [self.storyboard instantiateViewControllerWithIdentifier:@"AddFeelingView"];
    myAdfController.userTo = [_userFetch objectAtIndex:indexPath.row];
    myAdfController.controller = self;
    myAdfController.view.frame = CGRectMake(0.0, 0.0, 300.0, 250.0);

    KLCPopup *popup = [KLCPopup popupWithContentView:[myAdfController view] showType:KLCPopupShowTypeBounceIn dismissType:KLCPopupDismissTypeBounceOut maskType:KLCPopupMaskTypeDimmed dismissOnBackgroundTouch:YES dismissOnContentTouch:NO];

    [popup show];
}

按下按钮时出现KLCPopup错误

1 个答案: