使用SDWebimage下载带有网址的一对一图像 [英] Download Images One By One with url using SDWebimage

问题描述

我需要从Url的 Array 下载图像，并一次显示所有内容.前任.我有10个URL的数组，我只需要一个一个下载图像，然后一次显示.我正在使用 SDWebImage 下载图像.请帮助我.

I need to Download images from Array of Url's, one by one and Display all at a Time. Ex. I have an array of 10 URL's and I need to Download image One By One only, and display at a time. I am Using SDWebImage for Download Images. Please Help me.

谢谢.

推荐答案

您可以尝试类似

-(void)downloadImage {
     if self.urlArray.count > 0) {
         NSURL *url = [NSURL URLWithString:[self.urlArray firstObject]];
         SDWebImageManager *manager = [SDWebImageManager sharedManager];
         [manager downloadImageWithURL:imageURL
                  options:0
                 progress:^(NSInteger receivedSize, NSInteger expectedSize) {
                     // progression tracking code
                 }
                 completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, BOOL finished, NSURL *imageURL) {
                     if (image) {
                         [self.imageArray addObject:image];
                         [self.urlArray removeObjectAtIndex:0];
                         [self downloadImage];
                     }
                     else {
                         [self downloadImage]; //try download once again
                     }
                 }];
     }
     else {
         NSLog(@"All Images are downloaded do what u want")
     }
} 

注意:-，这里的 urlArray 是字符串url的数组，而 imageArray 数组包含您已下载的所有图像.

Note:- Here urlArray is array of string url and imageArray array contain all the image that you have download.

调用此方法.

希望这会对您有所帮助.

Hope this will help you.

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