I want to create a directory on "/mnt/extsd/MyFolder" this path. while calling mkdir() it returns false.I inserted the sdcard on my tablet, got the external path as "/mnt/extsd" and trying to create a folder on this path. Below is my code,
File lSDCardDirFile = new File("/mnt/extsd/MyFolder");
if (!lSDCardDirFile.exists()) {
System.out.println("Is folder created --- " + lSDCardDirFile.mkdirs());
}
I gave the permissions, . I want to create the folder in External sd card which is removable sd card. I am using android 4.0 ICS version device.
I created a different method for getting paths fom external SD card,
public static String[] getStorageDirectories()
{
String[] lDirs = null;
BufferedReader lBufferReader = null;
try {
lBufferReader = new BufferedReader(new FileReader("/proc/mounts"));
ArrayList list = new ArrayList();
String lStrline;
while ((lStrline = lBufferReader.readLine()) != null) {
if (lStrline.contains("vfat") || lStrline.contains("/mnt")) {
StringTokenizer lTokenizer = new StringTokenizer(lStrline, " ");
String lStrPath = lTokenizer.nextToken();
lStrPath = lTokenizer.nextToken(); // Take the second token, i.e. mount point
if (lStrPath.equals(Environment.getExternalStorageDirectory().getPath())) {
list.add(lStrPath);
}
else if (lStrline.contains("/dev/block/vold")) {
if (!lStrline.contains("/mnt/secure") && !lStrline.contains("/mnt/asec") && !lStrline.contains("/mnt/obb") && !lStrline.contains("/dev/mapper") && !lStrline.contains("tmpfs")) {
list.add(lStrPath);
}
}
}
}
lDirs = new String[list.size()];
for (int i = 0; i < list.size(); i++) {
lDirs[i] = (String) list.get(i);
}
}
catch (FileNotFoundException e) {}
catch (IOException e) {}
finally {
if (lBufferReader != null) {
try {
lBufferReader.close();
} catch (IOException e) {
}
}
}
return lDirs;
}`
From this method I got the path, but while trying to create a directory, the mkdir() returns false.
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
I have two folders like extSdCard and sdcard in my samsung galaxy s3.
Use the below code to choose.
private String[] mFilePaths;
File storageDir = new File("/mnt/");
if(storageDir.isDirectory()){
File[] dirList = storageDir.listFiles();
for (int i = 0; i < dirList.length; i++)
{
mFilePaths[i] = dirList[i].getAbsolutePath();
System.out.println("...................................."+mFilePaths[i]);
}
}
File Dir;
if(android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED))//check if sd card is mounted
{
Dir=new File(android.os.Environment.getExternalStorageDirectory(),"your folder name");
if(!Dir.exists())// if directory is not here
Dir.mkdirs() // make directory
}
Edit
To get the paths of internal and external storage. below code works on samsung galaxy s3.
String externalpath = new String();
String internalpath = new String();
public void getExternalMounts() {
Runtime runtime = Runtime.getRuntime();
try
{
Process proc = runtime.exec("mount");
InputStream is = proc.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
String line;
BufferedReader br = new BufferedReader(isr);
while ((line = br.readLine()) != null) {
if (line.contains("secure")) continue;
if (line.contains("asec")) continue;
if (line.contains("fat")) {//external card
String columns[] = line.split(" ");
if (columns != null && columns.length > 1) {
externalpath = externalpath.concat("*" + columns[1] + "n");
}
}
else if (line.contains("fuse")) {//internal storage
String columns[] = line.split(" ");
if (columns != null && columns.length > 1) {
internalpath = internalpath.concat(columns[1] + "n");
}
}
}
}
catch(Exception e)
{
e.printStackTrace();
}
System.out.println("Path of sd card external............"+externalpath);
System.out.println("Path of internal memory............"+internalpath);
}
Now you can use the path os external storage to create a folder.
if(android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED))//check if sd card is mounted
{
Dir=new File(externalpath,"your folder name");
if(!Dir.exists())// if directory is not here
Dir.mkdirs() // make directory
}
Do you have declared permission in Manifest.xml file?
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
Also I suggest you to not going for HardCoded path of /mnt/extsd/
Instead of it just use Environment.getExternalStorageDirectory().getPath()
.
final String PATH = Environment.getExternalStorageDirectory() + "/myfolder/";
if(!(new File(PATH)).exists())
new File(PATH).mkdirs();
include permission in manifest::
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
Add permission in Manifest file
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
File sdDir = Environment.getExternalStorageDirectory();
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.