Question

Bellow我有一个隐藏按钮的委托系统，然后保存在NSUserDefault中隐藏按钮的位置。但是由于某些原因，任何人都可以帮忙吗？

这里我有levelComplete代码...... .H

#import <UIKit/UIKit.h>
#import "levelComplete.h"
#import "LevelSelector.h"

@interface levelComplete : UIViewController{
  }
 @property (nonatomic, strong) id<CustomDelegate> delegatePpty;

 @end

的.m

@implementation levelComplete
@synthesize delegatePpty;

-(void)someAction
 {
[self.delegatePpty hideUnhidebutton:YES];//Call the delegate method to execute
 }


 - (void)viewDidLoad
   {
     [super viewDidLoad];
     // Do any additional setup after loading the view from its nib.
     [self someAction]; // Here I call my action
   }
@end

这里有leveSelector代码......

·H

  @protocol CustomDelegate <NSObject>
  -(void)hideUnhidebutton:(BOOL)value;
  @end

#import <UIKit/UIKit.h>
#import "levelComplete.h"
#import "LevelSelector.h"

@interface LevelSelector : UIViewController <CustomDelegate>{        

}

@property (nonatomic, strong) UIButton *level1;

@end

的.m

@implementation LevelSelector
@synthesize level1;

-(void)hideUnhidebutton:(BOOL)value
 {
  [self.level1 setHidden:value];
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setObject:[NSNumber numberWithBool:value] forKey:@"YourVariableKey"];
  }

 - (void)viewDidLoad
   {
    [super viewDidLoad];
     // Do any additional setup after loading the view from its nib

     NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
     BOOL restoredBoolValue = [[defaults objectForKey:@"YourVariableKey"] boolValue];
    }
@end

提前致谢!!!

修改

Thanks for all of your help I have now got the code to correctly function

Answer 1

我认为你在代表团遗漏了一些东西，一旦看到这个

delegateclass.h

#import <UIKit/UIKit.h>

@protocol CustomDelegate <NSObject>
-(void)hideUnhidebutton:(BOOL)value;
@end

@interface delegateclass : UIViewController <CustomDelegate>{        
id<CustomDelegate> delegate;
}
@property(retain) id delegate;

-(void)someMethod;
@end

delegateclass.m

 #import "delegateclass.h"

 @implementation delegateclass
 @synthesize delegate;


 -(void)someMethod {

   NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
   BOOL restoredBoolValue = [[defaults objectForKey:@"YourVariableKey"] boolValue];
   [[self delegate] hideUnhidebutton:restoredBoolValue];

   }
 @end

TestViewController.h

 #import <UIKit/UIKit.h>
 #import "delegateclass.h"

 @interface TestViewController : UIViewController{
  delegateclass *delegateclassObj;
 }
  @property (nonatomic, strong) id<CustomDelegate> delegatePpty;
  @property (nonatomic, strong) UIButton *level1;
  @end

TestViewController.m

   #import "TestViewController.h"
   @implementation TestViewController
   @synthesize delegatePpty,level1;

  - (void)viewDidLoad
   {
    [super viewDidLoad];

    delegateclassObj = [[delegateclass alloc]init];
    [delegateclassObj setDelegate:self];
    [delegateclassObj someMethod];
   }
  //Implementaion for Delegatemethod......

   -(void)hideUnhidebutton:(BOOL)value
   {
   [self.level1 setHidden:value];
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
   [defaults setObject:[NSNumber numberWithBool:value] forKey:@"YourVariableKey"];
   }
   @end

抱歉，我确切知道你的主题是什么，但是这里的delegete方法（hideUnhidebutton :)必须要调用。

希望它对你有帮助..

Answer 2

要检查的事项

创建levelComplete的实例时

[levelCompleteInstance setDelegatePpty:self];

同步NSUserDefaults

- (BOOL)synchronize

Objective-C：委托系统在Xcode中无法正常工作

2 个答案: