Question

如何从NSDocumentsDirectory检索所有图片？我不知道图片名称，但我需要将所有图片存储在NSMutableArray。

Answer 1

试试这个家伙

-(NSMutableArray*)pullOutAllImagesInDocumentsDirectory{

    NSArray *listOfPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [listOfPaths objectAtIndex:0];

    NSArray *filePathsArray = [[NSFileManager defaultManager] subpathsOfDirectoryAtPath:documentsDirectory  error:nil];
    NSMutableArray *imageFilePathsCollection = [[NSMutableArray alloc] init];


    for (int imageIndex=0; imageIndex<filePathsArray.count; imageIndex++) {

        NSString *strFilePath = [filePathsArray objectAtIndex:0];

        if ([[strFilePath pathExtension] isEqualToString:@"png"]||
            [[strFilePath pathExtension] isEqualToString:@"PNG"]||
            [[strFilePath pathExtension] isEqualToString:@"jpg"]) {

            [imageFilePathsCollection addObject:[filePathsArray objectAtIndex:imageIndex]];

        }
    }

    return imageFilePathsCollection;

}

注意：它会提供图片网址路径。为了获得图像，您可以使用

[yourImageView setImage:[UIImage imageWithContentsOfFile:"Path Of Image"]];

Answer 2

我假设您的意思是特定于您的应用沙箱的文档目录。如果是这样，您可以使用[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];

访问该目录

循环浏览该目录并查找具有.png或.jpg e.t.c的文件。路径扩展。

即：

NSString *string = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];

NSArray *array = [[NSFileManager defaultManager] contentsAtPath:string];
for (NSString *doc in array) {
    NSLog(@"%@", doc);
    if ([doc.pathExtension isEqualToString:@"jpg"]) {
    // Is jpg image obviously you want to search for different formats also
    }
}

如何获取存储在iOS中的NSDocumentDirectory中的所有图像？

2 个答案: