blocks|key|973421|text|尽管相对古老的Palm+OS和Windows+Mobile+OS设备能够读取SD卡ID，但AFAIK+Android设备还无法做到这一点。考虑到所讨论的here的Settings.Secure.ANDROID_ID问题，这一点尤其令人担忧。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|973422|entityMap|0|LINK|mutability|MUTABLE|url|http://groups.google.com/group/android-developers/browse_thread/thread/53898e508fab44f6?hl=en^0|24|4|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Even though the relatively ancient Palm OS and Windows Mobile OS devices are able to read the SD card ID, AFAIK Android devices aren't capable of doing that yet. This is particularly troubling given the problems with the Settings.Secure.ANDROID_ID discussed <a href="http://groups.google.com/group/android-developers/browse_thread/thread/53898e508fab44f6?hl=en" rel="nofollow noreferrer">here</a>.

blocks|key|1187721|text|到目前为止，我找到的唯一提供id的代码是C%2B%2B或C#+http://jo0ls-dotnet-stuff.blogspot.com/2008/12/read-secure-digital-sd-card-serial.html|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1187722|http://jo0ls-dotnet-stuff.blogspot.com/2008/12/read-cid-and-csd-c-implementation.html|1187723|如果你是一名C%2B%2B开发人员，你也许能够把它用在安卓上。|1187724|entityMap|0|LINK|mutability|MUTABLE|url|http://jo0ls-dotnet-stuff.blogspot.com/2008/12/read-secure-digital-sd-card-serial.html|1^0|R|2E|0|0|0|2D|1|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|F|3|G|5|6|7|Y|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|Z|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]|P|$5|K|L|M|C|$N|E]]]]

The only code I've found thus far to provide the id is C++ or C#
<a href="http://jo0ls-dotnet-stuff.blogspot.com/2008/12/read-secure-digital-sd-card-serial.html" rel="noreferrer">http://jo0ls-dotnet-stuff.blogspot.com/2008/12/read-secure-digital-sd-card-serial.html</a>
 
<a href="http://jo0ls-dotnet-stuff.blogspot.com/2008/12/read-cid-and-csd-c-implementation.html" rel="noreferrer">http://jo0ls-dotnet-stuff.blogspot.com/2008/12/read-cid-and-csd-c-implementation.html</a>
 
If you are a C++ developer you may be able to take this and make it work on Android.

blocks|key|973583|text|据我所知，没有Android+API可以做到这一点，并且需要一个通用的解决方案。为了提供一些背景知识，SD卡连接到特定于设备平台的硬件控制器。如果您了解您的平台，则可以从linux+/sys文件系统中读出CID值。以下代码片段适用于我的droid+(基于TI+omap的平台)，但不适用于基于Qualcomm+MSM的平台。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|973584|try+{
++++++++BufferedReader+input+=+new+BufferedReader(new+FileReader("/sys/devices/platform/mmci-omap-hs.0/mmc_host/mmc0/mmc0:aaaa/cid"));
++++++++String+sd_cid+=+input.readLine();
++++++++Log.i("CID_APP",+sd_cid);
++++}+catch+(Exception+e)+{
++++++++Log.e("CID_APP","Can+not+read+SD-card+cid");
++++}|code-block|syntax|javascript|973585|在另一个平台上，我们正在寻找的sys文件是不同的。在同一平台上的不同卡之间甚至可能存在差异，因为我无法对其进行测试。在基于MSM的设备上，路径类似于/sys/+devices+/platform/msm_sdcc.1/mmc_host/...|973586|由于我们的硬件依赖于读取SD卡CID，因此必须对Android+API进行更新，以提供通用访问。然后，此API必须由每个设备制造商实现，以映射到正确的SD卡控制器驱动程序。|973587|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

There is no Android API that can do this that I am aware of and for a general solution that is needed. To provide some background the SD card is connected to a hw-controller that is specific to the device platform. It is possible to read out the cid value from the linux /sys file system if you know your platform. The following snippet works on my droid (TI omap based platform) but not on Qualcomm MSM based platforms.

<pre><code>try {
 BufferedReader input = new BufferedReader(new FileReader("/sys/devices/platform/mmci-omap-hs.0/mmc_host/mmc0/mmc0:aaaa/cid"));
 String sd_cid = input.readLine();
 Log.i("CID_APP", sd_cid);
 } catch (Exception e) {
 Log.e("CID_APP","Can not read SD-card cid");
 }
</code></pre>

On a another platform the sys file we are looking for is different. It may even differ between different cards on the same platform since I was not able to test that. On MSM based devices the path would be something like /sys/devices/platform/msm_sdcc.1/mmc_host/...

Since we have this hardware dependence on reading out the SD-card CID there would have to be an update to the Android API:s that provides general access. This API would then have to be implemented by each device manufacturer to map to the correct sd card controller driver.

blocks|key|973640|text|正如BMB所写的，您无法知道SD卡在/sys文件系统中的真实路径。但是，/sys也实现了别名，您可以通过/sys/block/mmcblk0/device/cid检索CID。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|973641|例如，在运行2.2的纹身上，/sys/block/mmcblk0是到/sys/devices/platform/msm_sdcc.2/mmc_host/mmc1/mmc1:aaaa/block/mmcblk0.的软链接(由系统自动建立|973642|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

As BMB wrote, you cannot know the real path of the SD card in the /sys filesystem. However, /sys implements aliases as well, and you may be able to retrieve the CID through /sys/block/mmcblk0/device/cid.

For example, on a Tattoo running 2.2, /sys/block/mmcblk0 is a soft link (established automatically by the system) to /sys/devices/platform/msm_sdcc.2/mmc_host/mmc1/mmc1:aaaa/block/mmcblk0.

blocks|key|973735|text|下面是获取SID和CID的示例代码|type|unstyled|depth|inlineStyleRanges|entityRanges|data|973736|if+(isExteranlStorageAvailable())+{
++++try+{
++++++++File+input+=+new+File("/sys/class/mmc_host/mmc1");
++++++++String+cid_directory+=+null;
++++++++int+i+=+0;
++++++++File[]+sid+=+input.listFiles();

++++++++for+(i+=+0;+i+<+sid.length;+i%2B%2B)+{
++++++++++++if+(sid[i].toString().contains("mmc1:"))+{
++++++++++++++++cid_directory+=+sid[i].toString();
++++++++++++++++String+SID+=+(String)+sid[i].toString().subSequence(
++++++++++++++++++++++++cid_directory.length()+-+4,
++++++++++++++++++++++++cid_directory.length());
++++++++++++++++Log.d(TAG,+"+SID+of+MMC+=+"+%2B+SID);
++++++++++++++++break;
++++++++++++}
++++++++}
++++++++BufferedReader+CID+=+new+BufferedReader(new+FileReader(
++++++++++++++++cid_directory+%2B+"/cid"));
++++++++String+sd_cid+=+CID.readLine();
++++++++Log.d(TAG,+"CID+of+the+MMC+=+"+%2B+sd_cid);

++++}+catch+(Exception+e)+{
++++++++Log.e("CID_APP",+"Can+not+read+SD-card+cid");
++++}

}+else+{
++++Toast.makeText(this,+"External+Storage+Not+available!!",
++++++++++++Toast.LENGTH_SHORT).show();
}|code-block|syntax|javascript|973737|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Here is sample code for getting SID and CID 

<pre><code>if (isExteranlStorageAvailable()) {
 try {
 File input = new File("/sys/class/mmc_host/mmc1");
 String cid_directory = null;
 int i = 0;
 File[] sid = input.listFiles();

 for (i = 0; i &lt; sid.length; i++) {
 if (sid[i].toString().contains("mmc1:")) {
 cid_directory = sid[i].toString();
 String SID = (String) sid[i].toString().subSequence(
 cid_directory.length() - 4,
 cid_directory.length());
 Log.d(TAG, " SID of MMC = " + SID);
 break;
 }
 }
 BufferedReader CID = new BufferedReader(new FileReader(
 cid_directory + "/cid"));
 String sd_cid = CID.readLine();
 Log.d(TAG, "CID of the MMC = " + sd_cid);

 } catch (Exception e) {
 Log.e("CID_APP", "Can not read SD-card cid");
 }

} else {
 Toast.makeText(this, "External Storage Not available!!",
 Toast.LENGTH_SHORT).show();
}
</code></pre>

blocks|key|1187996|text|我设法找到我的SD卡CID通过usb插入我的手机到我的电脑，并使用adb工具(Android+SDK)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1187997|$+adb+shell
#+cat+/sys/block/mmcblk0/../../cid|code-block|syntax|javascript|1187998|我的手机是根的，所以我不确定这是否可以在非根的手机上访问。|1187999|也可以试试|1188000|$+adb+shell
#+cd+/sys/block/mmcblk0/../../
#+ls
block+++++++++++++++++fwrev+++++++++++++++++preferred_erase_size
cid+++++++++++++++++++hwrev+++++++++++++++++scr
csd+++++++++++++++++++manfid++++++++++++++++serial
date++++++++++++++++++name++++++++++++++++++subsystem
driver++++++++++++++++oemid+++++++++++++++++type
erase_size++++++++++++power+++++++++++++++++uevent|1188001|内核文档http://www.mjmwired.net/kernel/Documentation/mmc/mmc-dev-attrs.txt中对这些进行了解释|offset|length|1188002|entityMap|0|LINK|mutability|MUTABLE|url|http://www.mjmwired.net/kernel/Documentation/mmc/mmc-dev-attrs.txt^0|0|0|0|0|0|4|1U|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|11|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|12|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|13|8|@]|9|@$O|14|P|15|1|16]]|A|$]]|$1|Q|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

I managed to find my SD card CID by plugging my phone to my computer via usb and using the adb tool (Android SDK)

<pre><code>$ adb shell
# cat /sys/block/mmcblk0/../../cid
</code></pre>

My phone is rooted so I'm not sure if this is accessible on non-rooted phones.

Also try

<pre><code>$ adb shell
# cd /sys/block/mmcblk0/../../
# ls
block fwrev preferred_erase_size
cid hwrev scr
csd manfid serial
date name subsystem
driver oemid type
erase_size power uevent
</code></pre>

These are explained in the kernel documentation <a href="http://www.mjmwired.net/kernel/Documentation/mmc/mmc-dev-attrs.txt" rel="noreferrer">http://www.mjmwired.net/kernel/Documentation/mmc/mmc-dev-attrs.txt</a>

blocks|key|973913|text|android中有获取SD卡序列号的接口。该方法名为getFatVolumeId(String+mountPoint)，其中"mountPoint“是SD卡名称(您可以通过调用Environment.getExternalStorageDirectory()获得该名称)。但是getFatVolumeId是一种隐藏函数(或者忘记了)，所以你想要在你的项目中创建一个名为android.os的包，并在其中创建类来引用本机方法，以便能够调用它：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|973914|package+android.os;

public+class+FileUtils+{
++++public+static+native+int+getFatVolumeId(String+mountPoint);
}|code-block|syntax|javascript|973915|代码是：|973916|File+SdCard+=+Environment.getExternalStorageDirectory();
int+Serial+=+FileUtils.getFatVolumeId(SdCard.getName());|973917|另请参阅链接|973918|http://groups.google.com/group/android-framework/browse_thread/thread/1abd18435ba20a67?pli=1+http://markmail.org/message/rdl4bhwywywhhiau#query:%2Bpage:1%2Bmid:rdl4bhwywywhhiau%2Bstate:results|offset|length|973919|entityMap|0|LINK|mutability|MUTABLE|url|http://groups.google.com/group/android-framework/browse_thread/thread/1abd18435ba20a67?pli=1|1|http://markmail.org/message/rdl4bhwywywhhiau#query:%2Bpage:1%2Bmid:rdl4bhwywywhhiau%2Bstate:results^0|0|0|0|0|0|0|2K|0|2L|2L|1|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|12|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|14|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|15|8|@]|9|@$O|16|P|17|1|18]|$O|19|P|1A|1|1B]]|A|$]]|$1|Q|3|-4|5|6|7|1C|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]|Y|$5|T|U|V|A|$W|Z]]]]

There is api in android for getting sd card serial id. The method is called getFatVolumeId(String mountPoint), where "mountPoint" is sd card name (you can get this name by calling Environment.getExternalStorageDirectory()). But getFatVolumeId is kindof hidden function (or forgotten), so you want to create package in your project named android.os and the class in it to reference the native method, to be able to call it:

<pre><code>package android.os;

public class FileUtils {
 public static native int getFatVolumeId(String mountPoint);
}
</code></pre>

And the code is:

<pre><code>File SdCard = Environment.getExternalStorageDirectory();
int Serial = FileUtils.getFatVolumeId(SdCard.getName());
</code></pre>

Also see the links 

<a href="http://groups.google.com/group/android-framework/browse_thread/thread/1abd18435ba20a67?pli=1" rel="nofollow">http://groups.google.com/group/android-framework/browse_thread/thread/1abd18435ba20a67?pli=1</a>
http://markmail.org/message/rdl4bhwywywhhiau#query:+page:1+mid:rdl4bhwywywhhiau+state:results

blocks|key|973960|text|我做了这个。对我来说很管用。希望它能让你明白！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|973961|String+getSDCARDiD()
++++{
++++++++try+{

++++++++++++File+file+=+new+File("/sys/block/mmcblk1");
++++++++++++if+(file.exists()+&&+file.isDirectory())+{

++++++++++++++++memBlk+=+"mmcblk1";
++++++++++++}+else+{
++++++++++++++++//System.out.println("not+a+directory");
++++++++++++++++memBlk+=+"mmcblk0";
++++++++++++}

++++++++++++Process+cmd+=+Runtime.getRuntime().exec("cat+/sys/block/"%2BmemBlk%2B"/device/cid");
++++++++++++BufferedReader+br+=+new+BufferedReader(new+InputStreamReader(cmd.getInputStream()));
++++++++++++sd_cid+=+br.readLine();
++++++++++++//System.out.println(sd_cid);

++++++++}+catch+(IOException+e)+{
++++++++++++//+TODO+Auto-generated+catch+block
++++++++++++e.printStackTrace();
++++++++}
++++++++return+sd_cid;
++++}|code-block|syntax|javascript|973962|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I made this one... it worked for me... hope it makes u clear!

<pre><code>String getSDCARDiD()
 {
 try {

 File file = new File("/sys/block/mmcblk1");
 if (file.exists() &amp;&amp; file.isDirectory()) {

 memBlk = "mmcblk1";
 } else {
 //System.out.println("not a directory");
 memBlk = "mmcblk0";
 }

 Process cmd = Runtime.getRuntime().exec("cat /sys/block/"+memBlk+"/device/cid");
 BufferedReader br = new BufferedReader(new InputStreamReader(cmd.getInputStream()));
 sd_cid = br.readLine();
 //System.out.println(sd_cid);

 } catch (IOException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }
 return sd_cid;
 }
</code></pre>

blocks|key|1188174|text|我也在寻找这个功能，但从来没有得到一个家庭酿造的解决方案。我最终找到了一家生产SID阅读器的公司。转到nexcopy.com并查看他们的SD或microSD复印机部分。它一次最多可以读取20张卡片。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1188175|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I was looking for this function too but could never get a home brewed solution. I ended up finding a company that makes an SID reader. Go to nexcopy.com and look in their SD or microSD duplicator section. It can read up to 20 cards at a time.

blocks|key|974064|text|对于mmcblk0，只需在shell中写成：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|974065|cat+/sys/block/mmcblk0/device/cid+
2750485344303847307cf6851900b99b

cat+/sys/block/mmcblk0/device/serial+
0x7cf68519|code-block|syntax|javascript|974066|你可以很容易地用java实现它。|974067|参考：|974068|https://www.kernel.org/doc/Documentation/mmc/mmc-dev-attrs.txt|974069|https://www.kernel.org/doc/Documentation/sysfs-rules.txt|974070|http://www.cameramemoryspeed.com/sd-memory-card-faq/reading-sd-card-cid-serial-psn-internal-numbers/|974071|entityMap|0|LINK|mutability|MUTABLE|url|1|2^0|2|7|0|0|0|0|0|1Q|0|0|0|1K|1|0|0|2S|2|0^^$0|@$1|2|3|4|5|6|7|13|8|@$9|14|A|15|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|16|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|17|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|18|8|@]|D|@]|E|$]]|$1|O|3|P|5|6|7|19|8|@]|D|@$9|1A|A|1B|1|1C]]|E|$]]|$1|Q|3|R|5|6|7|1D|8|@]|D|@$9|1E|A|1F|1|1G]]|E|$]]|$1|S|3|T|5|6|7|1H|8|@]|D|@$9|1I|A|1J|1|1K]]|E|$]]|$1|U|3|-4|5|6|7|1L|8|@]|D|@]|E|$]]]|V|$W|$5|X|Y|Z|E|$10|P]]|11|$5|X|Y|Z|E|$10|R]]|12|$5|X|Y|Z|E|$10|T]]]]

for <code>mmcblk0</code>, just write in shell as:

<pre><code>cat /sys/block/mmcblk0/device/cid 
2750485344303847307cf6851900b99b

cat /sys/block/mmcblk0/device/serial 
0x7cf68519
</code></pre>

you can implement it in java easily.

ref: 
<a href="https://www.kernel.org/doc/Documentation/mmc/mmc-dev-attrs.txt" rel="nofollow">https://www.kernel.org/doc/Documentation/mmc/mmc-dev-attrs.txt</a> 
<a href="https://www.kernel.org/doc/Documentation/sysfs-rules.txt" rel="nofollow">https://www.kernel.org/doc/Documentation/sysfs-rules.txt</a> 
<a href="http://www.cameramemoryspeed.com/sd-memory-card-faq/reading-sd-card-cid-serial-psn-internal-numbers/" rel="nofollow">http://www.cameramemoryspeed.com/sd-memory-card-faq/reading-sd-card-cid-serial-psn-internal-numbers/</a>

blocks|key|1188264|text|你可以通过StorageManager获得它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1188265|下面是一个示例代码：|1188266|final+StorageManager+storageManager+=+(StorageManager)+activity.getSystemService(Context.STORAGE_SERVICE);
final+List<StorageVolume>+storageVolumes+=+storageManager.getStorageVolumes();
final+UserHandle+user+=+android.os.Process.myUserHandle();
for+(StorageVolume+storageVolume+:+storageVolumes)+{
+++++//+"SDCARD"+must+be+your+sd-card+name
+++++if+(storageVolume.getDescription(activity).equals("SDCARD")){
++++++++//+the+SD+Card+ID+number
++++++++return+storageVolume.getUuid();
+++++}
+}|code-block|syntax|javascript|1188267|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You can get it with the StorageManager.
 Here is a sample-code:

<pre><code>final StorageManager storageManager = (StorageManager) activity.getSystemService(Context.STORAGE_SERVICE);
final List&lt;StorageVolume&gt; storageVolumes = storageManager.getStorageVolumes();
final UserHandle user = android.os.Process.myUserHandle();
for (StorageVolume storageVolume : storageVolumes) {
 // "SDCARD" must be your sd-card name
 if (storageVolume.getDescription(activity).equals("SDCARD")){
 // the SD Card ID number
 return storageVolume.getUuid();
 }
 }
</code></pre>

How can I programatically read the SD Card's CID register, which contains a Serial Number and other information? Can I do it through Android Java, or Native code?

Thanks in advance,
Eric

How to read the SD Card ID number?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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如何以编程方式读取SD卡的CID寄存器，其中包含序列号和其他信息？我可以通过Android Java或原生代码来实现吗？提前谢谢你，埃里克

问如何读取SD卡识别码？
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问如何读取SD卡识别码？EN