我正在尝试从 AppDelegate 中调用 ViewController 类的方法，它进入该方法，但问题是没有显示任何内容，我一直在寻找，但找不到答案。有人可以帮助我吗？谢谢
这是代码：
AppDelegate.m
- (void)applicationWillEnterForeground:(UIApplication *)application
{
if (mainDelegate.isflagON=TRUE)
{
ViewController *vc=[ViewController new];
[vc pause];
}
}
视图控制器.m
- (void)viewDidLoad
{
[super viewDidLoad];
AppDelegate *mainDelegate = [[UIApplication sharedApplication] delegate];
if (mainDelegate.isflagON==false)
{
mainDelegate.isflagON=true;
CGSize viewSize = self.view.bounds.size;
// Add this line
GameScene *scene = [[GameScene alloc] initWithSize:viewSize];
scene.scaleMode = SKSceneScaleModeAspectFill;
self.scene = scene;
// Configure the view.
skView = (SKView *)self.view;
skView.showsFPS = YES;
skView.showsNodeCount = YES;
// Present the scene.
[skView presentScene:scene];
}else
{
[self doPause];
}
}
-(void) imprime
{
[self doPause];
}
- (void)doPause {
CGRect myImageRect = CGRectMake(0.0f, 0.0f, 200.0f, 200.0f);
backImageView = [[UIImageView alloc] initWithFrame:myImageRect];
[backImageView setImage:[UIImage imageNamed:@"dialogBox.png"]];
[self.view addSubview:backImageView];
[self.view sendSubviewToBack:backImageView];
//set the position of the button
buttonContinuar = [UIButton buttonWithType:UIButtonTypeCustom];
[buttonContinuar setBackgroundImage:[UIImage imageNamed:@"dialogButton.png"]
forState:UIControlStateNormal];
buttonContinuar.frame = CGRectMake(40.0f, 50.0f, 120, 35);
[buttonContinuar addTarget:self action:@selector(buttonWasClicked:) forControlEvents:UIControlEventTouchUpInside];
[buttonContinuar setTitle:@"Continuar" forState:UIControlStateNormal];
//add the button to the view
[self.view addSubview:buttonContinuar];
buttonMapa = [UIButton buttonWithType:UIButtonTypeCustom];
//[button setTitle:@"Continuar" forState:UIControlStateNormal];
[buttonMapa setBackgroundImage:[UIImage imageNamed:@"dialogButton.png"]
forState:UIControlStateNormal];
buttonMapa.frame = CGRectMake(40.0f, 85.0f, 120, 35);
[buttonMapa addTarget:self action:@selector(buttonMapaClicked:) forControlEvents:UIControlEventTouchUpInside];
[buttonMapa setTitle:@"Mapa" forState:UIControlStateNormal];
//add the button to the view
[self.view addSubview:buttonMapa];
buttonMenu = [UIButton buttonWithType:UIButtonTypeCustom];
//[button setTitle:@"Continuar" forState:UIControlStateNormal];
[buttonMenu setBackgroundImage:[UIImage imageNamed:@"dialogButton.png"]
forState:UIControlStateNormal];
buttonMenu.frame = CGRectMake(40.0f, 120.0f, 120, 35);
[buttonMenu addTarget:self action:@selector(buttonMenuClicked:) forControlEvents:UIControlEventTouchUpInside];
[buttonMenu setTitle:@"Menu" forState:UIControlStateNormal];
//add the button to the view
[self.view addSubview:buttonMenu];
}