Question

我想通过GameOverScene.m中的[self.delegate showShareScreen]委托我的方法，但我无法委托。我想知道原因并解决它。工作图像是Game Over Scene中有一个推特图像。当我触摸它时，它将起作用，并且将出现Twitter共享屏幕，我可以使用它。

GameOverScene.h

#import  <SpriteKit/SpriteKit.h>

@protocol sceneDelegate <NSObject>
-(void)showShareScreen;
@end
@interface GameOverScene : SKScene
@property (weak, nonatomic) id <sceneDelegate> delegate;
- (id)init;
@end

GameOverScene.m

#import "GameOverScene.h"
#import "NewGameScene.h"
#import "MainScene.h"
#import <Social/Social.h>

@implementation GameOverScene

@synthesize delegate;

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{

UITouch *touch = [touches anyObject];
CGPoint location = [touch locationInNode:self];
SKNode *node = [self nodeAtPoint:location];

if([node.name isEqualToString:@"twitterbutton"]){
      [self.delegate showShareScreen];
      //When I use the breakpoint, it is ignored.**
   }
 }

ViewController.h

#import <UIKit/UIKit.h>
#import <SpriteKit/SpriteKit.h>
#import <iAd/iAd.h>
#import "GameOverScene.h"

@interface ViewController : UIViewController <sceneDelegate>

@end

ViewController.m

#import "ViewController.h"
#import "NewGameScene.h"
#import <Social/Social.h>
#import "GameOverScene.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)loadView
{
self.view  = [[SKView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];
GameOverScene *theScene = [[GameOverScene alloc]init];
theScene.delegate = self;
}

-(void)showShareScreen
{ 
if ([SLComposeViewController isAvailableForServiceType:SLServiceTypeTwitter])
{
    SLComposeViewController *tweetSheet = [SLComposeViewController
                                                composeViewControllerForServiceType:SLServiceTypeTwitter];
    [tweetSheet setInitialText:@"TestTweet from the Game !!"];
    [self presentViewController:tweetSheet animated:YES completion:nil];

}
}

@end

我使用委托时会忽略self.delegate，请问原因是什么？

0 个答案: