如何使用for循环显示UIImage的NSArray

Question

嘿伙计们,所以......让我说我有一张NSArray图片

NSMutableArray *images = [NSMutableArray new];
[images addObject:[UIImage imageNamed:@"line1.png"]];
[images addObject:[UIImage imageNamed:@"line2.png"]];
[images addObject:[UIImage imageNamed:@"line3.png"]];
[images addObject:[UIImage imageNamed:@"line4.png"]];

现在我想使用for循环一次加载所有这些但是这里是catch ....我需要能够将图像设置为隐藏,直到用户通过交互取消隐藏.

 for (UIImage *image in images) {
    UIImageView *line = [[UIImageView alloc] initWithImage:image];
    line.hidden = YES;
    [self.view addSubview:line];
}

但那么如何使用其他方法将隐藏的BOOL设置为NO？

作为第二个问题,如何在上面的代码中释放*行？

谢谢,达伦

Answer 1

一种选择是设置您的图像,如:

int nextTag = 1;
for (UIImage *image in images) {
    UIImageView *line = [[UIImageView alloc] initWithImage:image];
    line.hidden = YES;
    line.tag = nextTag;
    [self.view addSubview:line];
    [line release];
    nextTag++;
}

...然后取消隐藏它们你可以做到:

UIView* imageView = [self.view viewWithTag: lineNumber];
imageView.hidden = NO;

...假设您的用户交互处理程序能够确定用户正在与UI交互的UI中的哪一行.