By guesswork, testing and end-user feedback on individual devices. On Sunday, March 10, 2013 11:03:36 PM UTC, [email protected] wrote: > > Thank for the info. My question is that there are so many third party > file explorer apps, how do they figure out the path of internal and > external storages? > > > > On Fri, Mar 8, 2013 at 5:24 PM, RichardC > <[email protected]<javascript:>> > wrote: > > The problem we have here is that getExternalStorageDirectory does NOT > return > > the location of the sd card. In fact it has nothing to do with sd cards > and > > never has. From the docs: > > > > "Note: don't be confused by the word "external" here. This directory can > > better be thought as media/shared storage. It is a filesystem that can > hold > > a relatively large amount of data and that is shared across all > applications > > (does not enforce permissions). Traditionally this is an SD card, but it > may > > also be implemented as built-in storage in a device that is distinct > from > > the protected internal storage and can be mounted as a filesystem on a > > computer." > > > > > http://developer.android.com/reference/android/os/Environment.html#getExternalStorageDirectory() > > > > > It is that part of the file system that is mounted when you attach an > > external device such as a desktop computer via the USB port. > > > > There is NO documented way in Android to enumerate removable storage. > > > > > > On Friday, March 8, 2013 9:21:38 PM UTC, [email protected] wrote: > >> > >> Yes, have read the documentation. But that is not what I am looking > >> for. The getExternalStorage() returns internal sd card (if there are > >> both internal sd card and external sd card). I want to know how to > >> find the external sd card path. > >> > >> > >> > >> On Wed, Mar 6, 2013 at 9:05 PM, TreKing <[email protected]> wrote: > >> > > >> > On Wed, Mar 6, 2013 at 10:29 PM, [email protected] <[email protected]> > >> > wrote: > >> >> > >> >> So, I want to know, first, how to enumerate all storage locations > >> > > >> > > >> > Did you check the documentation? > >> > > >> > http://developer.android.com/guide/topics/data/data-storage.html > >> > > >> >> > >> >> , second, monitor sdcard insert/eject events. > >> > > >> > > >> > See the various MEDIA broadcasts. > >> > > >> > > http://developer.android.com/reference/android/content/Intent.html#ACTION_MEDIA_BAD_REMOVAL > > >> > > >> > > >> > > ------------------------------------------------------------------------------------------------- > > > >> > TreKing - Chicago transit tracking app for Android-powered devices > >> > > >> > -- > >> > -- > >> > You received this message because you are subscribed to the Google > >> > Groups "Android Developers" group. > >> > To post to this group, send email to [email protected] > >> > To unsubscribe from this group, send email to > >> > [email protected] <javascript:> > >> > For more options, visit this group at > >> > http://groups.google.com/group/android-developers?hl=en > >> > --- > >> > You received this message because you are subscribed to the Google > >> > Groups > >> > "Android Developers" group. > >> > To unsubscribe from this group and stop receiving emails from it, > send > >> > an > >> > email to [email protected]<javascript:>. > > >> > For more options, visit https://groups.google.com/groups/opt_out. > >> > > >> > > > > > -- > > -- > > You received this message because you are subscribed to the Google > > Groups "Android Developers" group. > > To post to this group, send email to > > [email protected]<javascript:> > > To unsubscribe from this group, send email to > > [email protected] <javascript:> > > For more options, visit this group at > > http://groups.google.com/group/android-developers?hl=en > > --- > > You received this message because you are subscribed to the Google > Groups > > "Android Developers" group. > > To unsubscribe from this group and stop receiving emails from it, send > an > > email to [email protected] <javascript:>. > > For more options, visit https://groups.google.com/groups/opt_out. > > > > >
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