NSArray [UIImage setContentMode：]

Question

如果我没有来自网址Feed的图片，我想放置默认图片。

if(![[stories objectAtIndex:storyIndex] valueForKey:@"url"]==nil)
{  NSNumber *numberOfKeyInstances = [stories valueForKey:@"key"];
    imageArray=[NSArray arrayWithObjects:[UIImage imageNamed:@"1.png"],nil];

    int  randomNumber_ = rand ()%19;
    UIImage *image = [imageArray objectAtIndex:indexPath.row];
    cell.imag=image;




}
else{
    if (![[[stories objectAtIndex:storyIndex] valueForKey:@"url"] isEqualToString:@""]) {


        [cell.imag setImageWithURL:[NSURL URLWithString:[[stories objectAtIndex:storyIndex] objectForKey:@"url"]] placeholderImage:[UIImage imageNamed:@"Alb.png"]];

    }



}

这是我的代码，但我得到[UIImage setContentMode:]: unrecognized selector sent to instance 0x7f908c1dcce0'

我怎么解决？

Answer 1

尝试更改

UIImage *image = [imageArray objectAtIndex:indexPath.row];

到

UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:[imageArray objectAtIndex:indexPath.row]]];

Answer 2

我怀疑cell.imag是UIImageView而非UIImage属性。

所以你需要改变：

cell.imag=image;

到

cell.imag.image = image;

Answer 3

首先，imageArray仅使用一个图像进行初始化。所以调用[imageArray objectAtIndex:indexPath.row]是个问题。你不需要一个图像数组。其次，第一个if语句中的参数看起来不正确。

另外，正如@ midhun-mp所指出的那样，你应该使用cell.imag.image。

试试这个：

if([[stories objectAtIndex:storyIndex] valueForKey:@"url"] == nil)
{  
   cell.imag.image = [UIImage imageNamed:@"1.png"];
}
else if ([[[stories objectAtIndex:storyIndex] valueForKey:@"url"] isEqualToString:@""]) 
{
   cell.imag.image = [UIImage imageNamed:@"1.png"];
}
else
{
   //SET YOUR IMAGE HERE
}