Question

我在项目中使用过4张图片。运行时会产生：

*由于未捕获的异常终止应用程序＆＃39; NSInvalidArgumentException＆＃39;，原因：＆＃39; * - [__ NSArrayM insertObject：atIndex：]：对象不能为nil＆＃39; ***首先抛出调用堆栈：

我的代码：

NSArray *imageNames= @[@"jake_2.png",@"jake_3.png",@"jake_4.png",@"jake_5.png "];
// Do any additional setup after loading the view, typically from a nib.
NSMutableArray *images = [[NSMutableArray alloc] init];
for (int i = 0; i < imageNames.count; i++)
{
    [images addObject:[UIImage imageNamed:[imageNames objectAtIndex:i]]];
    UIImageView *slowAnimationImageView = [[UIImageView alloc] initWithFrame:CGRectMake(160, 95, 86, 193)];
    slowAnimationImageView.animationImages = images;
    slowAnimationImageView.animationDuration = 5;
    [self.view addSubview:slowAnimationImageView];
    [slowAnimationImageView startAnimating];
}

Answer 1

您遇到问题，因为您在数组中提供的imageName在资源中不可用。检查数组中的最后一个对象： @“jake_5.png”。里面有一个额外的空间。请删除它。这就是造成这个问题的原因。

更新：

对于动画，您需要在imageArray中添加所有图像后进行设置。请参阅此代码以获取帮助并进行更改：

NSMutableArray *images = [[NSMutableArray alloc] init];
for (int i = 0; i < imageNames.count; i++)
{
    [images addObject:[UIImage imageNamed:[imageNames objectAtIndex:i]]];
}

slowAnimationImageView.animationImages = images;
slowAnimationImageView.animationDuration = 5;
[slowAnimationImageView startAnimating];

希望它有所帮助...

Answer 2

空间与最后一张图像的名称相比没有错误

 NSArray *imageNames= @[@"jake_2.png",@"jake_3.png",@"jake_4.png",@"jake_5.png"];
    // Do any additional setup after loading the view, typically from a nib.
    NSMutableArray *images = [[NSMutableArray alloc] init];
    for image in imagesNames
    {
        [images addObject:[image];
        UIImageView *slowAnimationImageView = [[UIImageView alloc] initWithFrame:CGRectMake(160, 95, 86, 193)];
        slowAnimationImageView.animationImages = images;
        slowAnimationImageView.animationDuration = 5;
        [self.view addSubview:slowAnimationImageView];
        [slowAnimationImageView startAnimating];
    }

但如果您不想像这样添加for循环，请使用方法 addObjectOfArray 将对象追加到Mutable Array中

Answer 3

问题出现是因为@"jake_5.png "中有一个额外的空格：

NSArray *imageNames= @[@"jake_2.png",@"jake_3.png",@"jake_4.png",@"jake_5.png "];

应该是：

@"jake_5.png"

附录：

您希望UIImageView为一系列图像制作动画的方式不正确：

请用以下内容替换你的：

UIImageView *slowAnimationImageView = [[UIImageView alloc] initWithFrame:CGRectMake(160, 95, 86, 193)];
[self.view addSubview:slowAnimationImageView];

NSArray *imageNames = @[@"jake_2.png", @"jake_3.png", @"jake_4.png", @"jake_5.png"];

NSMutableArray *images = [[NSMutableArray alloc] init];
for (int i = 0; i < imageNames.count; i++)
{
    [images addObject:[UIImage imageNamed:[imageNames objectAtIndex:i]]];
}

slowAnimationImageView.animationImages = images;
slowAnimationImageView.animationDuration = 5;
[slowAnimationImageView startAnimating];

Answer 4

NSArray *imageNames= @[@"jake_2.png",@"jake_3.png",@"jake_4.png",@"jake_5.png "]; replace it with 
NSArray *imageNames= @[@"jake_2.png",@"jake_3.png",@"jake_4.png",@"jake_5.png"];

因为你把空间@“jake_5.png”可能是这个图像在资源中不可用所以它会给你错误。

NSArrayM insertObject中的异常：atindex

4 个答案: