Question

我正在尝试同时加载5张图片，因为他们将它放在视图上并每隔5秒更换一次图像（在当前的5之间切换）我创建当前一个类，当viewdidload和启动计时器时调用，加载所有图像的方法是这样的：

-(NSMutableArray *)getAllPhotos
{
    NSMutableArray * photosArray = [[NSMutableArray alloc]init];

    NSString * pic0 = [NSString stringWithFormat:@"http://74.53.32.202/~ltashiro/public/Servidor/Images/0.png"];
    NSString * pic1 = [NSString stringWithFormat:@"http://74.53.32.202/~ltashiro/public/Servidor/Images/1.png"];
    NSString * pic2 = [NSString stringWithFormat:@"http://74.53.32.202/~ltashiro/public/Servidor/Images/2.png"];
    NSString * pic3 = [NSString stringWithFormat:@"http://74.53.32.202/~ltashiro/public/Servidor/Images/3.png"];

    NSURL *image0 = [NSURL URLWithString:pic0];
    NSURL * image1 = [NSURL URLWithString:pic1];
    NSURL * image2 = [NSURL URLWithString:pic2];
    NSURL * image3 = [NSURL URLWithString:pic3];

    NSMutableArray * arrayURL = [[NSMutableArray alloc]init];
    [arrayURL addObject:image0];
    [arrayURL addObject:image1];
    [arrayURL addObject:image2];
    [arrayURL addObject:image3];

    for (int i = 0; i<4; i++)
    {
        NSData * imageData = [[NSData alloc]initWithContentsOfURL:[arrayURL objectAtIndex:i]];
        Photo * aPhoto = [[Photo alloc]init];
        aPhoto.photoID = (i+1);
        aPhoto.photo = [[UIImage alloc]initWithData:imageData];

        [photosArray addObject:aPhoto];
        [aPhoto release];
        [imageData release];
    }

    return photosArray;
}

但有时会在发布时批评，还有其他解决方案吗？

Answer 1

我正在搜索此处发布的问题。我在这里找到了解决方案： http://www.switchonthecode.com/tutorials/loading-images-asynchronously-on-iphone-using-nsinvocationoperation

虽然没有测试过。

从互联网目标-c同时加载各种图像

1 个答案: