有没有一种方法可以确定应用程序在iOS中已使用的磁盘空间量? [英] Is there a way to determine the amount of disk space an app has used in iOS?

问题描述

我看过很多关于如何获取iOS设备的可用空间量或iOS设备具有多少可用空间的文章，但是有没有办法确定应用程序本身已使用了多少空间? (包括应用程序本身及其所有资源/文档/缓存/等).该值将与设置"->常规"->"iPhone存储"中看到的值相同.

I've seen many posts about how to get the amount of free space the iOS device has, or how much free space the iOS device has, but is there a way to determine how much space the app itself has used? (Including the app itself and all of its resources/documents/cache/etc). This would be the same value that can be seen in Settings->General->iPhone Storage.

推荐答案

我最终弄清楚了如何做到这一点:

I ended up figuring out how to do this:

我在NSFileManager上创建了一个类别并添加:

I created a category on NSFileManager and added:

-(NSUInteger)applicationSize
    NSString *appgroup = @"Your App Group"; // Might not be necessary in your case.

    NSURL *appGroupURL = [self containerURLForSecurityApplicationGroupIdentifier:appgroup];
    NSURL *documentsURL = [[self URLsForDirectory: NSDocumentDirectory inDomains: NSUserDomainMask] firstObject];
    NSURL *cachesURL = [[self URLsForDirectory: NSCachesDirectory inDomains: NSUserDomainMask] firstObject];

    NSUInteger appGroupSize = [appGroupURL fileSize];
    NSUInteger documentsSize = [documentsURL fileSize];
    NSUInteger cachesSize = [cachesURL fileSize];
    NSUInteger bundleSize = [[[NSBundle mainBundle] bundleURL] fileSize];
    return appGroupSize + documentsSize + cachesSize + bundleSize;
}

我还在NSURL上添加了以下类别:

I also added a category on NSURL with the following:

-(NSUInteger)fileSize
{
    BOOL isDir = NO;
    [[NSFileManager defaultManager] fileExistsAtPath:self.path isDirectory:&isDir];
    if (isDir)
        return [self directorySize];
    else
        return [[[[NSFileManager defaultManager] attributesOfItemAtPath:self.path error:nil] objectForKey:NSFileSize] unsignedIntegerValue];
}

-(NSUInteger)directorySize
{
    NSUInteger result = 0;
    NSArray *properties = @[NSURLLocalizedNameKey, NSURLCreationDateKey, NSURLLocalizedTypeDescriptionKey];
    NSArray *files = [[NSFileManager defaultManager] contentsOfDirectoryAtURL:self includingPropertiesForKeys:properties options:NSDirectoryEnumerationSkipsHiddenFiles error:nil];
    for (NSURL *url in files)
    {
        result += [url fileSize];
    }

    return result;
}

如果您有很多应用程序数据，则需要一点时间才能运行，但是它可以正常工作.

It takes a bit to run if you have a lot of app data, but it works.

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