Question

我在UIView中有5个UIIMage View, 我把UIIMIView命名如下:

@property (retain, nonatomic) IBOutlet UIImageView *imgPic1;
@property (retain, nonatomic) IBOutlet UIImageView *imgPic2;
@property (retain, nonatomic) IBOutlet UIImageView *imgPic3;
@property (retain, nonatomic) IBOutlet UIImageView *imgPic4;
@property (retain, nonatomic) IBOutlet UIImageView *imgPic5;

假设所有 UIImagiage View 都装满了图像, 用户可以在运行时删除任何 UIImagiView, 我想知道我如何实现以下情景?

我希望有一个智能环圈,这样,如果用户删除 < 强 > imgPic3 < /强 >, < 强 > imgPic4 < /强 > 图像将移动到 < 强 > imgPic3 < /强 >,而 < 强 > imgPic5 < /强 > 将移动到 < 强 > imgPic4 < /强 > 和 < 强 > imgPic5 指定为无

imgPic3.img = imgPic4.img;
imgPic4.img = imgPic5.img;
imgPic5.img = nil;

如果被删除,我可以为每个UIIMageView 硬代码5个逻辑情景, 但我想以聪明的方式做, 这样它就会有效, 即使我有100个 UIIMage View 。

Answer 1

使用 NSmubableAray 来包含 5 UIImageView 指针。当图像视图 x 被删除时, 请做 :

for (int i = imgViewNumber; i < [myImageViewArray count]-1; i++) {
    [[myImageViewArray objectAtIndex:i] setImage:[[myImageViewArray objectAtIndex:i+1] image]];
}
[[myImageViewArray lastObject] setImage:nil];

Edit:
To add your UIImageViews to the array:

Don t have each one defined as a property nor an iVar - only have a retained property for the array.
Use a for (int i = 0; i < numImageViews; i++) loop to add all of your image views, and at the same time as calling addSubview:, call [myImageViewArray addObject:imageView].
Then if you want to set the image for a particular image view, call [[myImageViewArray objectAtIndex:imageViewNumber] setImage:image] (bear in mind that for image view 1, imageViewNumber should be 0)

希望现在情况明了

友情链接