苹果手表 - 手表工具 - 没有调用代理方法

Question

好吧，我试图将int传递到另一个接口，编辑int并将其返回到原始接口。我想用一个委托来实现这一点，我相信我已经正确设置了它，并且它的方法并没有被调用。

// 
// InterfaceController.h 
// DelegateTest WatchKit Extension 
// 
// Created by Rohan Hodge on 20/10/2015. 
// Copyright © 2015 Hodge Development. All rights reserved. 
// 

#import <WatchKit/WatchKit.h> 
#import <Foundation/Foundation.h> 
#import "SecondController.h" 

@interface InterfaceController : WKInterfaceController <DelegateTest> 
{ 
    NSTimer *Update; 
} 
@property (strong, nonatomic) IBOutlet WKInterfaceLabel  *FirstControllerLabel; 
@property (nonatomic,assign) int FirstInteger; 
@property (nonatomic,assign) int RecievedInteger; 
@property (nonatomic,assign) NSString *PassString; 


@end 

---

// InterfaceController.m 
// DelegateTest WatchKit Extension 
// 
// Created by Rohan Hodge on 20/10/2015. 
// Copyright © 2015 Hodge Development. All rights reserved. 
// 

#import "InterfaceController.h" 


@interface InterfaceController() 

@end 


@implementation InterfaceController 
@synthesize FirstInteger; 
@synthesize RecievedInteger; 
@synthesize PassString; 

- (void)awakeWithContext:(id)context { 
    [super awakeWithContext:context]; 

    // Configure interface objects here. 
} 
-(void)UpdateVoid 
{ 
    self.FirstControllerLabel.text = [NSString stringWithFormat:@"%i", FirstInteger]; 
} 

- (void)willActivate { 
    SecondController *interfaceController; 
    interfaceController.delegate = self; 
    Update = [NSTimer timerWithTimeInterval:1.0 target:self  selector:@selector(UpdateVoid) userInfo:nil repeats:YES]; 

    // This method is called when watch view controller is about to be visible to user 
[super willActivate]; 
} 

- (void)didDeactivate { 
    // This method is called when watch view controller is no longer visible 
    [super didDeactivate]; 
} 

-(void)DelegateMethod:(int)ReturningInt 
{ 
    [self popController]; 
    FirstInteger = ReturningInt; 
    self.FirstControllerLabel.text = [NSString stringWithFormat:@"%i", FirstInteger]; 
} 
- (IBAction)UpButton { 
    FirstInteger++; 
    self.FirstControllerLabel.text = [NSString stringWithFormat:@"%i", FirstInteger]; 
} 

- (IBAction)DownButton { 
    FirstInteger--; 
    self.FirstControllerLabel.text = [NSString stringWithFormat:@"%i", FirstInteger]; 
} 
- (IBAction)PassDataButton { 
    PassString = [NSString stringWithFormat:@"%i", FirstInteger]; 
    [self pushControllerWithName:@"SecondController" context:PassString]; 
} 

@end 

---

// 
// SecondController.h 
// DelegateTest 
// 
// Created by Rohan Hodge on 20/10/2015. 
// Copyright © 2015 Hodge Development. All rights reserved. 
// 

#import <WatchKit/WatchKit.h> 
#import <Foundation/Foundation.h> 

//This declaration of delegate. 
@protocol DelegateTest <NSObject> 

-(void) DelegateMethod:(int)ReturningInt; 

@end 

@interface SecondController : WKInterfaceController 
{ 
    id delegate; 

} 
@property (nonatomic, assign) id <DelegateTest> delegate; 
@property (strong, nonatomic) IBOutlet WKInterfaceLabel *SecondLabel; 
@property (nonatomic,assign) NSString *RecievedString; 
@property (nonatomic, assign) int FirstReceivedInteger; 

@end 

---

// 
// SecondController.m 
// DelegateTest 
// 
// Created by Rohan Hodge on 20/10/2015. 
// Copyright © 2015 Hodge Development. All rights reserved. 
// 

#import "SecondController.h" 
#import "InterfaceController.h" 

@interface SecondController() 

@end 

@implementation SecondController 
@synthesize SecondLabel; 
@synthesize FirstReceivedInteger; 
@synthesize RecievedString; 
@synthesize delegate = _delegate; 

- (void)awakeWithContext:(id)context { 
    [super awakeWithContext:context]; 

    //This is where I receive the int inside of a string and split it from the string so I can change it 
    RecievedString = context; 
    FirstReceivedInteger = [RecievedString intValue]; 


    // Configure interface objects here. 
} 

- (void)willActivate { 
    self.SecondLabel.text = [NSString stringWithFormat:@"%i",FirstReceivedInteger]; 

    // This method is called when watch view controller is about to be visible to user 
    [super willActivate]; 
} 


- (IBAction)UpButton { 
    FirstReceivedInteger++; 
    self.SecondLabel.text = [NSString stringWithFormat:@"%i",FirstReceivedInteger]; 
} 
- (IBAction)DownButton { 
    FirstReceivedInteger--; 
    self.SecondLabel.text = [NSString stringWithFormat:@"%i",FirstReceivedInteger]; 
} 
    //This is a button that is ment to pass back the int. 
    - (IBAction)ReturnToOriginalInterface:(id)sender{ 

     [self.delegate DelegateMethod:FirstReceivedInteger]; 

} 

- (void)didDeactivate { 
    // This method is called when watch view controller is no longer visible 
    [super didDeactivate]; 
} 
    @end 

---

我新的堆栈溢出，很抱歉的乱码格式。

P.S我使用界面左上方的箭头返回到原始界面。我也使用Objective-C

在此先感谢。

Answer 1

您需要设置一个属性或方法在您的控制器中进行更改（即您的第一个控制器将更改），然后以delegate模式返回结果。

Answer 2

您试图在Watch应用程序中执行此操作，是的？我不知道代表不工作，但是当我为Watch应用程序执行此操作时，我使用WKInterfaceController::presentControllerWithName:context:的参数context。

context是要传递的值的NSDictionary。其中一个值可能是一个指向呈现控制器的指针。

所以，试图破译你试图在你的应用是什么，我相信做正确的事情是：

在ORIGINAL WKInterfaceController：

- (IBAction)buttonThatOpensOtherIC 
{ 
    NSDictionary *context = @{ 
           @"firstController" : self, 
           }; 

    [self pushControllerWithName:@"Other IC" 
         context:context]; 
    } 
} 

在其他 WKInterfaceController：

- (void)awakeWithContext:(id)context { 
    [super awakeWithContext:context]; 

    if (context) 
    { 
     self.originalInterfaceController = context[@"firstController"]; 
    } 
} 

//This is the button that calls the delegate method. 
- (IBAction)ReturnToOriginalInterface:(id)sender 
{ 
    // [self.delegate DelegateMethod:FirstReceivedInteger]; 

    if (self.originalInterfaceController) { 
     self.originalInterfaceController.firstInteger = self.returningInt; 
    } 

    [self popController]; 
} 

*请注意使用awakeWithContext:中的其他接口控制器。

免责声明＃1：我还没有执行该代码，因此有可能是一个错字在里面。这是适合你使用的工作代码。

免责声明＃2：我还没有更新我的应用程序的WatchOS 2.我怀疑的事情改变了这一部分，但它是可能的。