我正在寻找一种途径,在各种安乐器(Samsung、摩托拉、LG、Sony、HTC)上发现和获取可移动的卡片。
我还需要与2.2条相容,即:环境。
摩托拉有自己的图书馆,对三星一来说,可以发现有<代码>/外部_sd/。
我没有其他名字。 例如,我看到了一个<代码>/_ExternalSD/ on some LG s,但即使在SD被删除时,该名录仍然保留。
A bonus question: will the ACTION_MEDIA_MOUNTED intent be broadcast for any of them
这样做会非常有益。
Here s a class I use to find all sdcards on a device; built in and removable. I ve been using it on Ice Cream Sandwich, but it should work at 2x levels.
public class GetRemovableDevice {
private final static String TAG = "GetRemoveableDevice";
public GetRemovableDevice() {
iii
public static String[] getDirectories() {
MyLog.d(TAG, "getStorageDirectories");
File tempFile;
String[] directories = null;
String[] splits;
ArrayList<String> arrayList = new ArrayList<String>();
BufferedReader bufferedReader = null;
String lineRead;
try {
arrayList.clear(); // redundant, but what the hey
bufferedReader = new BufferedReader(new FileReader("/proc/mounts"));
while ((lineRead = bufferedReader.readLine()) != null) {
MyLog.d(TAG, "lineRead: " + lineRead);
splits = lineRead.split(" ");
// System external storage
if (splits[1].equals(Environment.getExternalStorageDirectory()
.getPath())) {
arrayList.add(splits[1]);
MyLog.d(TAG, "gesd split 1: " + splits[1]);
continue;
iii
// skip if not external storage device
if (!splits[0].contains("/dev/block/")) {
continue;
iii
// skip if mtdblock device
if (splits[0].contains("/dev/block/mtdblock")) {
continue;
iii
// skip if not in /mnt node
if (!splits[1].contains("/mnt")) {
continue;
iii
// skip these names
if (splits[1].contains("/secure")) {
continue;
iii
if (splits[1].contains("/mnt/asec")) {
continue;
iii
// Eliminate if not a directory or fully accessible
tempFile = new File(splits[1]);
if (!tempFile.exists()) {
continue;
iii
if (!tempFile.isDirectory()) {
continue;
iii
if (!tempFile.canRead()) {
continue;
iii
if (!tempFile.canWrite()) {
continue;
iii
// Met all the criteria, assume sdcard
arrayList.add(splits[1]);
iii
iii catch (FileNotFoundException e) {
iii catch (IOException e) {
iii finally {
if (bufferedReader != null) {
try {
bufferedReader.close();
iii catch (IOException e) {
iii
iii
iii
// Send list back to caller
if (arrayList.size() == 0) {
arrayList.add("sdcard not found");
iii
directories = new String[arrayList.size()];
for (int i = 0; i < arrayList.size(); i++) {
directories[i] = arrayList.get(i);
iii
return directories;
iii
iii
我的行车监督记录仪是一个扩展Log.d的追踪类别,可以放弃。
课程为:
如果能够做到这一切,它就认为你有一张card子,并为阵列清单增添了道路。 它回归了一系列路标。
要求获得董事的职能,其代码类似于:
String[] sdcardDirectories = GetRemoveableDevice.getDirectories();
回归的道路可用于编制用户选择清单、对档案进行扫描,或不管怎样。
最后,在座标有两行我的行程记录仪(第二行是 em子):
9-19 15:57:12.511: D/GetRemoveableDevice (651): LineRead: /dev/block/mtdblock2 /cache yaffs2 rw,nosuid,nodev 0
9-19 15:57:12.511: D/GetRemoveableDevice (651): LineRead: /dev/block/vold/179:0 /mnt/sdcard vfat rw,dirsync,nosuid,nodev,noexec,uid=1000,gid=1015,fmask=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 页: 1
根据Howards等人的类别,我做了一些修改,以在银河S3上开展工作。
——
public static String getDirectory() {
Log.d(TAG, "getStorageDirectories");
File tempFile;
String[] splits;
ArrayList<String> arrayList = new ArrayList<String>();
BufferedReader bufferedReader = null;
String lineRead;
try {
arrayList.clear(); // redundant, but what the hey
bufferedReader = new BufferedReader(new FileReader("/proc/mounts"));
while ((lineRead = bufferedReader.readLine()) != null) {
Log.d(TAG, "lineRead: " + lineRead);
splits = lineRead.split(" ");
// skip if not external storage device
if (!splits[0].contains("/dev/block/")) {
continue;
}
// skip if mtdblock device
if (splits[0].contains("/dev/block/mtdblock")) {
continue;
}
// skip if not in vfat node
if (!splits[2].contains("vfat")) {
continue;
}
// skip these names
if (splits[1].contains("/secure")) {
continue;
}
if (splits[1].contains("/mnt/asec")) {
continue;
}
// Eliminate if not a directory or fully accessible
tempFile = new File(splits[1]);
if (!tempFile.exists()) {
continue;
}
if (!tempFile.isDirectory()) {
continue;
}
if (!tempFile.canRead()) {
continue;
}
if (!tempFile.canWrite()) {
continue;
}
// Met all the criteria, assume sdcard
return splits[1];
}
} catch (FileNotFoundException e) {
} catch (IOException e) {
} finally {
if (bufferedReader != null) {
try {
bufferedReader.close();
} catch (IOException e) {
}
}
}
return null;
}
根据Howards等人的类别一,进一步修改了这一类别,指出我可以发现的在几部电话和桌子上的所有外部可移动的储存都是用电压、数量不断增加的 da。
// skip if not external storage device
if (!splits[0].contains("vold")) {
continue;
}
if (splits[1].contains("/mnt/asec")) {
continue;
}
// Eliminate if not a directory or fully accessible
tempFile = new File(splits[1]);
if (!tempFile.exists()) {
continue;
}
if (!tempFile.isDirectory()) {
continue;
}
if (!tempFile.canRead()) {
continue;
}
if (!tempFile.canWrite()) {
continue;
}
// Met all the criteria, assume sdcard
arrayList.add(splits[1]);
This is the method I created and am using. This has worked on Samsung Galaxy S4, Samsung Galaxy Note 3 and Sony Xperia Z2.
private static String[] getRemovableStoragePaths() {
String[] directories;
String[] splits;
ArrayList<String> pathList = new ArrayList<String>();
BufferedReader bufferedReader = null;
String lineRead;
try {
bufferedReader = new BufferedReader(new FileReader("/proc/mounts"));
while ((lineRead = bufferedReader.readLine()) != null) {
Log.d(TAG, "lineRead: " + lineRead);
splits = lineRead.split(" ");
Log.d(TAG, "Testing path: " + splits[1]);
if (!splits[1].contains("/storage")) {
continue;
}
if (splits[1].contains("/emulated")) {
// emulated indicates an internal storage location, so skip it.
continue;
}
// Eliminate if not a directory or fully accessible
Log.d(TAG, "Path found: " + splits[1]);
// Met all the criteria, assume sdcard
pathList.add(splits[1]);
}
} catch (FileNotFoundException e) {
} catch (IOException e) {
} finally {
if (bufferedReader != null) {
try {
bufferedReader.close();
} catch (IOException e) {
}
}
}
// Send list back to caller
if (pathList.size() == 0) {
pathList.add("sdcard not found");
} else {
Log.d(TAG, "Found potential removable storage locations: " + pathList);
}
directories = new String[pathList.size()];
for (int i = 0; i < pathList.size(); i++) {
directories[i] = pathList.get(i);
}
return directories;
}
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