如何在Mac OS X中获取存储设备的图标?

您可以使用nsworkspace。
初始图像为32x32,但它具有其他尺寸的表示,并将相应缩放。

NSWorkspace * ws = [NSWorkspace sharedWorkspace];
NSImage * icon = [ws iconForFile:@"/Volumes/Whatever"];
NSLog(@"%@", [icon representations]); // see what sizes the icon has
icon.size = NSMakeSize(512, 512);

就在最近 Andrew Myrick answered a similar question 在Darwin Dev邮件列表上:

KextManagerCreateURLForBundleIdentifier() 在里面 <IOKit/kext/KextManager.h> 可能是 有用,尽管我相信它只起作用 对于1)加载的kexts, 或2)in/s/l/e/。这是雪 豹头兽:

/*!
 * @function KextManagerCreateURLForBundleIdentifier
 * @abstract Create a URL locating a kext with a given bundle identifier.
 *
 * @param    allocator
 *           The allocator to use to allocate memory for the new object.
 *           Pass <code>NULL</code> or <code>kCFAllocatorDefault</code>
 *           to use the current default allocator.
 * @param    kextIdentifier
 *           The bundle identifier to look up.
 *
 * @result
 * A CFURLRef locating a kext with the requested bundle identifier.
 * Returns <code>NULL</code> if the kext cannot be found, or on error.
 *
 * @discussion
 * Kexts are looked up first by whether they are loaded, second by version.
 * Specifically, if <code>kextIdentifier</code> identifies a kext
 * that is currently loaded,
 * the returned URL will locate that kext if it's still present on disk.
 * If the requested kext is not loaded,
 * or if its bundle is not at the location it was originally loaded from,
 * the returned URL will locate the latest version of the desired kext,
 * if one can be found within the system extensions folder.
 * If no version of the kext can be found, <code>NULL</code> is returned.
 */
CFURLRef KextManagerCreateURLForBundleIdentifier(
    CFAllocatorRef allocator,
    CFStringRef    kextIdentifier);

注意在雪豹之前 仅适用于Kexts in/s/l/e;The API存在,但没有 描述其行为的校长。

对我来说,这在Mac OS X 10.5上非常有效。

这可能对你有帮助。(或者可能没有)

在玩“ioreg”命令的时候,我遇到了一些让我想起你的问题的东西,所以我会贴出来:

尝试发出以下命令:

ioreg -c IOMedia -x

这将产生一个大混乱的产出,看起来像这样:

  |     +-o IOBlockStorageDriver  <class IOBlockStorageDriver, registered, matched, active, busy 0, retain 7>
  |       +-o Apple read/write Media  <class IOMedia, registered, matched, active, busy 0, retain 9>
  |         | {
  |         |   "Removable" = Yes
  |         |   "BSD Unit" = 0x4
  |         |   "IOBusyInterest" = "IOCommand is not serializable"
  |         |   "BSD Minor" = 0xc
  |         |   "Ejectable" = Yes
  |   |         |   "BSD Name" = "disk4"
  |         |   "Leaf" = No
  |         |   "IOMediaIcon" = {"CFBundleIdentifier"="com.apple.iokit.IOStorageFamily","IOBundleResourceFile"="Removable.icns"}
  |         |   "Preferred Block Size" = 0x200
  |         |   "Whole" = Yes
  |         |   "Open" = Yes
  |         |   "Size" = 0x100000
  |         |   "Writable" = Yes
  |         |   "Content" = "Apple_partition_scheme"
  |         |   "IOGeneralInterest" = "IOCommand is not serializable"
  |         |   "Content Hint" = ""
  |         | }         |   "BSD Major" = 0xe

这一切让我相信(因此在这里盲目地建议您调查),如果您遍历与“iomedia”匹配的IO注册表树,您可以获得属性字典,其中包含键控条目“iomediaicon”,它本身似乎是一个集合,通知您包标识符和资源文件名。

不要说这很容易…但是看看 火线SDK 对于您可能需要的所有示例代码… 无论如何,它可能比硬编码预填充路径“更好”(在将来的OS版本中可能会消失)。

k & lt;

这两个给了我(举个例子):

com.apple.iokit.iostoragefamily(捆绑标识) internal.icns(资源文件)

我尝试使用以下方法提取图标:

nsbundle*bundlewithicon=[nsbundle bundlewithIdentifier:bid]; nsstring*iconpath=[bundlewithicon pathforresource:rfile of type:nil];

但是 bundleWithIcon 是 nil .

bundleWithIdentifier: 要求您已经为具有该标识符的包创建了nsbundle实例;它只查找以前创建的实例。因此,您需要在文件系统中找到这个包,并通过路径名实例化它。幸运的是,你似乎已经找到了这个问题的链接。

没有自定义图标的卷将与操作系统的一个通用图标一起显示,您已经硬编码了到这里的路径。带有自定义图标的卷将把该图标存储在其文件系统中,如果没有安装,找到它将完全成为您的工作。