ios - NSArrayM insertObject :atindex 异常

Question

我在项目中使用了 4 个图像..运行时结果:

* Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[__NSArrayM insertObject:atIndex:]: object cannot be nil' *** First throw call stack:

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

您遇到问题是因为您在数组中提供的图像名称在资源中不可用。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。这就是导致此问题的原因。

更新:

对于动画，您需要在将所有图像添加到您的imageArray 后设置它。请引用此代码以获得帮助并进行更改:

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]; 

希望对你有帮助