iPhone-更新NSMutablearray的第n个对象的属性 [英] iPhone - update the property of nth object of a NSMutablearray

问题描述

可能是我在这里的第一篇文章.我有一个NSMutableArray * iconsMutableArray;并在NSMutableArray中添加了一些UIImageView.

Probably its my first post here. I have an NSMutableArray *iconsMutableArray; And have added some UIImageView in the NSMutableArray.

for (int i = 2; i <= 9; i++) {
    UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:[NSString stringWithFormat:@"Guide-Icon-%d.png", i]]];
    [iconsMutableArray addObject:imageView];
    [imageView release];
}

现在我想在UIImageView中更改第N个对象的UIImage源.我怎样才能?我尝试了几种方法，例如，

Now i want to change the UIImage source of Nth object in the UIImageView. How can I? I have tried several ways e.g,

[[iconsMutableArray objectAtIndex:activeItem] image] = [UIImage imageNamed:@"Guide-Icon-7_Active.png"];

有人可以帮助我吗?

推荐答案

[[iconsMutableArray objectAtIndex:activeItem] setImage:[UIImage imageNamed:@"Guide-Icon-7_Active.png"]];

这篇关于iPhone-更新NSMutablearray的第n个对象的属性的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！