ios - 如何在 objective-c 中使用 for 循环显示存储在数组中的值

Question

逻辑:

• 数组中的 5 个图像

例子:

apple.png,mango.png,bird.png,sun.png,moon.png

我需要在这个数组中使用arc4random，所以我得到索引为1，所以值得到mango.png

在我存储的其他数组中

number = [[NSMutableArray alloc]initWithObjects:@"4",@"2",@"9",@"1",@"8",@"7",@"5",@"3",@"6",@"10", nil];

并使用了 arc4random，我得到的输出为 index:2 value as:9

然后我需要在 ImageView 中打印 9 次芒果图像。

请帮助如何使用 objective-c 对此进行编码

Answer 1

根据我的理解，你必须根据随机数在 ImageView 中显示随机图像。

看下面的代码，

images = [[NSMutableArray alloc]initWithObjects:[UIImage imageNamed:@"Navarre-Family-Eye-Care-Navarre-Florida-Optometrist-Santa-Christmas-Toy-Safety.jpg"],[UIImage imageNamed:@"Christmas-Wallpapers-HD-Picture.jpg"],[UIImage imageNamed:@"Christmas-Wallpaper-jesus-9413550-1024-768.jpg"],[UIImage imageNamed:@"tree.jpg"],[UIImage imageNamed:@"luxury-christmas-napkins-father-christmas-1635-p.jpg"],[UIImage imageNamed:@"Navarre-Family-Eye-Care-Navarre-Florida-Optometrist-Santa-Christmas-Toy-Safety.jpg"],[UIImage imageNamed:@"Christmas-Wallpapers-HD-Picture.jpg"],[UIImage imageNamed:@"Christmas-Wallpaper-jesus-9413550-1024-768.jpg"],[UIImage imageNamed:@"tree.jpg"],[UIImage imageNamed:@"luxury-christmas-napkins-father-christmas-1635-p.jpg"], nil];

int randomIndex=arc4random() % images.count;
UIImage *selectedImage = [images objectAtIndex:randomIndex]; //random selected image

number = [[NSMutableArray alloc]initWithObjects:@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"10", nil];
int randomNumber = arc4random() % number.count; //random selected number

NSInteger indexValue = [number indexOfObject:[NSString stringWithFormat:@"%d",randomNumber]]; // get index number of your random number

for (int i = 0; i <indexValue ; i++) {
    NSLog(@"%@", selectedImage);
    yourImageView.Image = selectedImage;
}