从文档目录中检索多个图像 [英] Retrieve multiple images from document directory

问题描述

我在文档目录中有一个名为"2"的文件夹.现在，在文件夹"2"中，我有五个图像，分别名为0.png，1.png，2.png，3.png和4.png.我想检索这些图像并保存到数组中.我有代码，但只返回一张图像.

I have folder named "2" in document directory. Now in folder "2", I have five images named 0.png, 1.png, 2.png, 3.png and 4.png. I want to retrieve these images and save into an array. I have code but it returns only one image.

int b=2;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,     NSUserDomainMask, YES);
NSLog(@"%@",paths);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *getImagePath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%d/0.png",b]];
UIImage *img = [UIImage imageWithContentsOfFile:getImagePath];
NSLog(@"%@",getImagePath);
imge.image=img;

推荐答案

只需使用NSFileManager，就像这样:

Just use NSFileManager, something like this:

[[NSFileManager defaultManager] contentsOfDirectoryAtPath:path error:&error];

它将为您提供一个包含给定路径中所有文件的所有文件路径的数组.

It will give you an array with all the file paths for all files in the given path.

这是从URL数组加载图像的方式.

This is how you load the images from the array of URLs.

NSArray *paths = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:path error:&error];
for (NSURL *url in paths)
{
    UIImage *image = [UIImage imageWithData:[NSData dataWithContentsOfURL:url]];
}

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