如何在Android中获取所有内存路径（内部或外部内存）列表

Question

I'm facing problem to detect all memory path in Android device. If we try with provide tips and example we aren't able to getting proper external memory path.

For Example :

If we try to get external memory in Samsung Tab 2 Used code ::

Environment.getExternalStorageDirectory().getAbsolutePath()

It will provide us internal Mounted Memory path. //storage/sdcard0/

After lot of googling i found one application which show all path of device

Application Name " ES Explorer " This application showing all path of Memory.

Please provide us any solution so we can fix our problem

Answer 1

Beyond those types of storage volumes specifically supported by the standard Android SDK is a wide variety of vendor- and version- unique possibilities.

You can find all mounted filesystems by reading /proc/mounts as a text file.

However:

• This will only find filesystems which are actually mounted - for example, it will not find USB storage volumes if they are handled as arbitrary USB accessories by an application, rather than mounted by the Linux operating system underlying Android.

• You will have to apply some logic to filter out all the other various file systems which are not general storage devices and show up in the list. It used to be that you could detect "external" storage volumes by looking for "vfat" as a type, but that is no longer used in recent Android versions

• Especially in recent Android versions, the actual path of the mount as discovered from /proc/mounts and the path customarily used may not match, as the customary path may redirect to the actual one by multiple levels of symbolic links

Answer 2

Samsung handles their storage a little differently than some other devices unfortunately. Ever since their version of Android 3.2, they have also disallowed the writing to the external storage by regular apps. That being said, you can still read(access) the external storages. Below are the paths to the two possible external storage locations. I actually have programmed specifically for the Galaxy Tab 2.0 (7 inch), so here ya go:

Inserted microSD card: mnt/extSdCard
Connected external storage via Samsung USB Adapter: mnt/UsbDriveA
"sdcard" storage(not an inserted SD card): getExternalStorageDirectory() as you know.

I've tried multiple ways to use functions to find the path, but haven't had any luck ever. However, this works, so I'm content. I hope it can help you too.

Answer 3

Please try to use bellow code.

public static File FileCache(Context context) {
    // Find the dir to save cached images
    File cacheDir;
    if (android.os.Environment.getExternalStorageState().equals(
            android.os.Environment.MEDIA_MOUNTED))
        cacheDir = new File(
                android.os.Environment.getExternalStorageDirectory(),
                "TechTool_Pdf");
    else
        cacheDir = context.getCacheDir();
    if (!cacheDir.exists())
        cacheDir.mkdirs();
    return cacheDir;
}