无法从另一个类，IOS改变BOOL值 [英] Can't change value of BOOL from another class, IOS

问题描述

我遇到一个简单的问题，我试图改变从另一个类的一类布尔值，但情况并非如此，它返回 NO 。

//推其他的ViewController之前

   - （IBAction为）editWOD
{
    self.editGirlController = [[AddGirlsView的alloc]初始化];
    self.editGirlController.isEditModeON = YES;
    self.editGirlController.editgirls =女孩;
    [个体经营performSegueWithIdentifier：@editModeGirls发件人：个体经营];
}
 

AddGirlsView .H

  @interface AddGirlsView：的UIViewController
{
    BOOL isEditModeON;}
@property BOOL isEditModeON;
 

AddGirlsView .M

  @synthesize isEditModeON;
 - （无效）viewDidLoad中
{
    [超级viewDidLoad中];
    如果（isEditModeON == NO）{
        的NSLog（@编辑模式是OFF）;
    }
    其他{
        [个体经营populateViewOnEdit]
    }
}
 

哪些错误与code？

+++++++++答案ADDED +++++++++++++++++

在这里感谢乔尔就是答案

   - （IBAction为）editWOD
{
    [个体经营performSegueWithIdentifier：@editModeGirls发件人：个体经营];
}
 - （无效）prepareForSegue：（UIStoryboardSegue *）赛格瑞发件人：（ID）发送者
{
    如果（[SEGUE符] isEqualToString：@editModeGirls]）
    {
        AddGirlsView * editGirlController = [赛格瑞destinationViewController]
        editGirlController.isEditModeON = YES;
        editGirlController.editgirls =女孩;
    }
}
 

解决方案

我认为这个问题是你的alloc和init AddGirlsView。当您执行SEGUE它可能重新实例化另一个AddGirlsView。您应该设置在prepareForSegue这个变量。

 如果（[segue.identifier isEqualToString：@editGirlsMode]）{
    [segue.destinationViewController setIsEditModeOn：YES];
    [segue.destinationViewController setEditGirls：女生];
}
 

I encounter a simple problem , I am trying to change the bool value of a class from another class but it is not happening, it returns NO.

//before pushing other viewcontroller

-(IBAction)editWOD
{
    self.editGirlController= [[AddGirlsView alloc] init];
    self.editGirlController.isEditModeON=YES;
    self.editGirlController.editgirls=girls;
    [self performSegueWithIdentifier:@"editModeGirls" sender:self];
}

AddGirlsView .h

@interface AddGirlsView : UIViewController
{
    BOOL isEditModeON;

}
@property BOOL isEditModeON;

AddGirlsView .m

@synthesize isEditModeON;
- (void)viewDidLoad
{
    [super viewDidLoad];
    if (isEditModeON==NO) {
        NSLog(@"Edit Mode is OFF");
    }
    else{
        [self populateViewOnEdit];
    }


}

Whats wrong with the code?

+++++++++ANSWER ADDED+++++++++++++++++

thanks to Joel here is the answer

-(IBAction)editWOD
{
    [self performSegueWithIdentifier:@"editModeGirls" sender:self];
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if([[segue identifier] isEqualToString:@"editModeGirls"])
    {
        AddGirlsView *editGirlController  = [segue destinationViewController];
        editGirlController.isEditModeON=YES;
        editGirlController.editgirls=girls;
    }
}

解决方案

I think the issue is that you alloc and init AddGirlsView. When you perform a segue it is probably re-instantiating another AddGirlsView. You should be setting this variable in prepareForSegue.

if ([segue.identifier isEqualToString:@"editGirlsMode"]) {
    [segue.destinationViewController setIsEditModeOn:YES];
    [segue.destinationViewController setEditGirls:girls];
}

这篇关于无法从另一个类，IOS改变BOOL值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！