在iphone上幻燈片和轉換？

如果我使用這些代碼，並在模擬器上運行它，他只會向我顯示陣列中的前兩張圖片。如果我在Iphone上運行它，他會向我顯示第一張照片。也他不重複的圖片.-

什麼iam做錯了？

- (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];  
}

來源

2012-04-24 Bashud

您是否嘗試過使用調試器來逐步通過您的代碼？ – Stefan 2012-04-24 14:00:09

嘗試在viewDidLoad中添加此項。

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];

來源

2012-04-24 14:03:01 TompaLompa

thx你的代碼正在工作。如何添加轉換到您的代碼？有沒有像我這樣的其他方式？ – Bashud 2012-04-24 14:12:26

我找到了。您應該跳過初始化transitionChotos中的photoCount。把它變成一個iVar或財產。

來源

2012-04-24 14:38:14 TompaLompa

Ahhhhhh thx。那是我的錯 – Bashud 2012-04-24 14:55:28

varsågod！我猜 – TompaLompa 2012-04-24 14:59:22

試試這個代碼

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];  
}

來源

2013-10-29 09:39:43 rakesh

在iphone上幻燈片和轉換？

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