Ios Iphone上的幻灯片放映和过渡？

我有以下代码的有线问题

如果我使用这些代码并在模拟器上运行它，他只会向我显示带有转换的数组中的前两张图片。如果我在Iphone上运行它，他只会给我看第一张图片。 他也不会重复这些图片

我做错了什么

    - (void)viewDidLoad{
    [super viewDidLoad];

    welcomePhoto = [NSArray arrayWithObjects:@"Bild.jpeg",@"Bild1.jpeg", @"Bild2.png", nil];
    imageView.image = [UIImage imageNamed:[welcomePhoto objectAtIndex:0]];
    [NSTimer scheduledTimerWithTimeInterval:3.0 target:self selector:@selector(transitionPhotos) userInfo:nil repeats:YES];
}


-(void)transitionPhotos{
    int photoCount;
    if (photoCount < [welcomePhoto count] - 1){
        photoCount ++;
    }else{
        photoCount = 0;
    }
    [UIView transitionWithView:self.imageView
                      duration:2.0
                       options:UIViewAnimationOptionTransitionCrossDissolve
                    animations:^{ imageView.image = [UIImage imageNamed:[welcomePhoto objectAtIndex:photoCount]]; }
                    completion:NULL];    
}

-（void）viewDidLoad{
[超级视图下载]；
welcomePhoto=[NSArray阵列，其对象为：@“Bild.jpeg”，“Bild1.jpeg”，“Bild2.png”，无]；
imageView.image=[UIImage ImageName:[welcomePhoto objectAtIndex:0]]；
[NSTimer scheduledTimerWithTimeInterval:3.0目标：自选择器：@selector（transitionPhotos）userInfo:nil repeats:YES]；
}
-（无效）过渡照片{
国际光电计数；
if（光电计数<[Welcome光电计数]-1）{
光电计数++；
}否则{
光电计数=0；
}
[UIView转换WithView:self.imageView
持续时间：2.0
选项：UIViewAnimationOptionTransitionCrossSolve
动画：^{imageView.image=[UIImage ImageName:[welcomePhoto objectAtIndex:photoCount]]；}
完成：空]；
}

尝试将此添加到viewDidLoad中

UIImageView* animatedImageView = [[UIImageView alloc] initWithFrame:CGRectMake(10, 90, 100, 100)];
[self.view addSubview:animatedImageView];
animatedImageView.animationImages = [NSArray arrayWithObjects:    
                                     [UIImage imageNamed:@"bild.png"],
                                     [UIImage imageNamed:@"bild.png"],
                                     [UIImage imageNamed:@"bild.png"], nil]; //etc
animatedImageView.animationDuration = 3.0f * [animatedImageView.animationImages count];
animatedImageView.animationRepeatCount = 0;
[animatedImageView startAnimating];
[self.view addSubview: animatedImageView];

---

我找到了。你应该跳过初始化transitionPhotos中的photoCount。将其设置为iVar或属性。

尝试此代码

    NSArray *imagesArray;
 int photoCount;
 UIImageView *imageView;
-(void)setupImageView{
     photoCount = 0;
     [[NSArray alloc]initWithObjects:[UIImage imageNamed:@"imgA.png"] ,[UIImage imageNamed:@"imgB.png"] ,[UIImage imageNamed:@"imgC.png"] ,[UIImage imageNamed:@"imgD.png"] ,[UIImage imageNamed:@"imgE.png"] , nil];         imageView =[[UIImageView alloc]initWithFrame:CGRectMake(0, 0, width, height)];
     imageView.image = [imagesArray objectAtIndex:photoCount];
     [self.view addSubview:imageView];
     [NSTimer scheduledTimerWithTimeInterval:20.0 target:self selector:@selector(transitionPhotos) userInfo:nil repeats:YES];

 }

 -(void)transitionPhotos{


if (photoCount < [imagesArray count] - 1){
    photoCount ++;
}else{
    photoCount = 0;
}
[UIView transitionWithView:self.imageView1
                  duration:2.0
                   options:UIViewAnimationOptionTransitionCrossDissolve
                animations:^{ imageView.image = [imagesArray objectAtIndex:photoCount]; }
                completion:NULL];    
}

NSArray*imagesArray；
国际光电计数；
UIImageView*图像视图；
-（无效）setupImageView{
光电计数=0；
[[NSArray alloc]initWithObjects:[UIImage ImageName:@“imgA.png”]、[UIImage ImageName:@“imgB.png”]、[UIImage ImageName:@“imgC.png”]、[UIImage ImageName:@“imgD.png”]、[UIImage ImageName:@“imgE.png”]、nil]；imageView=[UIImageView alloc]initWithFrame:cRectmake（0，0，宽度，高度）]；
imageView.image=[imagesArray objectAtIndex:photoCount]；
[self.view addSubview:imageView]；
[NSTimer scheduledTimerWithTimeInterval:20.0目标：自选择器：@selector（transitionPhotos）userInfo:nil repeats:YES]；
}
-（无效）过渡照片{
if（光电计数<[imagesArray计数]-1）{
光电计数++；
}否则{
光电计数=0；
}
[UIView transitionWithView:self.imageView1
持续时间：2.0
选项：UIViewAnimationOptionTransitionCrossSolve
动画：^{imageView.image=[imagesArray objectAtIndex:photoCount]；}
完成：空]；
}

您是否尝试过使用调试器单步执行代码？thx您的代码正在运行。如何将转换添加到代码中？有没有其他办法像我一样？