Question

我在@echo off for /f "skip=4 tokens=1" %%a in (result.txt) do ( set "word2=%%a" goto :next ) :next echo %word2% pause应用程序中使用iCarousel。每个轮播objective-c都包含view。所以在

image

我将-(UIView *)carousel:(iCarousel *)carousel viewForItemAtIndex:(NSInteger)index reusingView:(UIView *)view设置为：

image

此行中的应用程序崩溃。这就是错误：

[carouselImage setImageWithURL:[NSURL URLWithString:myStringUrl] placeholderImage:[UIImage imageNamed:placeholderImage]];

当我搜索到这一点时，我发现许多解决方案建议在-[CarouselUIView setImageWithURL:placeholderImage:]: unrecognized selector sent to instance *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[CarouselUIView setImageWithURL:placeholderImage:]: unrecognized selector sent to instance 0x123d10a70'使用-ObjC标志，但我已经有了这个标志。

修改：附加代码

这是我的功能的全部代码：

Build Settings

-(UIView *)carousel:(iCarousel *)carousel viewForItemAtIndex:(NSInteger)index reusingView:(UIView *)view { UIImageView * carouselImage; if (view == nil) { NSData *tempArchiveView = [NSKeyedArchiver archivedDataWithRootObject:self.carouselItemView]; CarouselUIView * carousselView = [NSKeyedUnarchiver unarchiveObjectWithData:tempArchiveView]; view = carousselView; } carouselImage = (UIImageView *) [view viewWithTag:0]; [carouselImage setImageWithURL:[NSURL URLWithString: myStringUrl] placeholderImage:[UIImage imageNamed:imagePlaceholder]]; return view; }：

CarouselView

Answer 1

从查看给定代码开始，使用imageView初始化视图的行有问题。

[view viewWithTag:0];

必须将标记值更改为其他 0 。因为默认情况下所有视图的标记属性都设置为 0 。

快乐编码：）

Answer 2

试试这可能对你有所帮助。 如果轮播包含仅限ImageView

-(UIView *) carousel:(iCarousel *)carousel viewForItemAtIndex:(NSInteger)index reusingView:(UIView *)view{
    UIImageView  *imageView = (UIImageView *)view;
    if (!imageView) {
        imageView =[[UIImageView alloc]initWithFrame:CGRectMake(0, 0, ViewWidth(carousel), 250)];
        imageView.tag = 100;

    }
    [imageView setImageWithURL:[NSURL URLWithString: myStringUrl] placeholderImage:[UIImage imageNamed:imagePlaceholder]];

    return imageView;
}

iOS：无法在iCarousel中设置图像

2 个答案: