ios - 自定义委托(delegate)方法不起作用iOS

我创建了一个自定义委托方法来更新ViewController的背景色。我无法获得委托方法来响应。这是我的代码:

VASettingsView.h

#import <UIKit/UIKit.h>
#import <GLKit/GLKit.h>

@class VASettingsView;

@protocol VASettingsViewDelegate <NSObject>
- (void)setNewBackgroundColour:(GLKVector4)newColour;
@end

@interface VASettingsView : UIView {
    id <VASettingsViewDelegate> delegate;
}

@property (strong, nonatomic) IBOutlet UIButton *blackBackgroundButton;
@property (strong, nonatomic) IBOutlet UIButton *saveButton;

@property GLKVector4 backgroundColourSetting;

// Set delegate method
@property (nonatomic,weak)id delegate;

- (IBAction)blackButtonPressed:(id)sender;
- (IBAction)saveButtonPressed:(id)sender;

@end

VASettingsView.m

#import "VASettingsView.h"

@implementation VASettingsView

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {

    }
    return self;
}

- (IBAction)blackButtonPressed:(id)sender {
    self.backgroundColourSetting = GLKVector4Make(0.0, 0.0, 0.0, 0.0);
}
- (IBAction)saveButtonPressed:(id)sender {
    [delegate setNewBackgroundColour:self.backgroundColourSetting];
}

@end

VARendererViewController.h

@class VA_CASFrame;
@class VA_Character;
@class VA_Orbit_Camera;

#import <UIKit/UIKit.h>
#import <GLKit/GLKit.h>
#import <QuartzCore/QuartzCore.h>
#import "VASettingsView.h"

@interface VARendererViewController : GLKViewController <VASettingsViewDelegate>
{
    // Code

}

VARendererViewController.m

ViewDidLoad

// Setup UIView to be delegate
VASettingsView *settingsView = [[VASettingsView alloc] init];
settingsView.delegate = self;

setNewBackgroundColour

- (void)setNewBackgroundColour:(GLKVector4)newColour{

    self.backgroundColour = GLKVector4Make(newColour.x,
                                           newColour.y,
                                           newColour.z,
                                           newColour.w
                                           );
    NSLog(@"STOP");
}

故事板:

我无法到达setNewBackgroundColour，并且一直在寻找答案数小时。我看不到我做错了什么？

山姆

最佳答案

我怀疑问题是您在VARendererViewController中分配了一个VASettingsView的新实例的初始化，而不是获得一个您要放在屏幕上的指针。由于您没有显示如何在屏幕上获得VASettingsView或如何创建其视图，因此仅是一个猜测。

编辑后:

代替，

VASettingsView *settingsView = [[VASettingsView alloc] init];
settingsView.delegate = self;

试试这个，

VASettingsView *settingsView = self.childViewControllers[0];
SettingsView.delegate = self;