Can Not Locate The Sdcard File(not Hard Code) In Android 6.0

Since android 6.0, the sdcard path is no longer '/storage/sdcard1/', '/storage/sdcard-ext/' or something. The path depends on the phone instead. If I use Nexus 5x AVD, the path is

Solution 1:

Have a look at getExternalFilesDirs().

Solution 2:

It seems that I found the solution.

I'm using the access storage framework. I get it by handling the string of uri and get the "1D15-3A1B" part and then combine it to the sdcard path. Here is the solution.

1. When I click the file Welcome to Word.docx in the sdcard root path, I get the intent by onActivityResult().
2. Get the DocumentId by String docId = DocumentsContract.getDocumentId(intent.getData()), thus the string docId is "1D15-3A1B:Welcome to Word.docx".
3. Split the string and get a string array by String[] split = docId.split(":"), so we can get "1D15-3A1B" which is split[0], and the path in sdcard "Welcome to Word.docx" is split[1].
4. If we want to get the uri of the file we clicked before, just need to build a new string String newPath = "/storage/" + split[0] + "/" + split[1].

update: Actually getExternalFilesDirs() is much easier to do this...Thank you @greenapps!

Solution 3:

I was trying many approaches, including:

Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)
Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM)
Environment.getExternalStorageDirectory()

Still my picture files in DCIM/Camera were not visible to my app. I could see the directory names, but listFiles() on any of these directories returned null. Finally, and sheepishly, I found that my Manifest did not contain the magic line android.permission.WRITE_EXTERNAL_STORAGE. Once I added the permission, it worked like a charm.

Moral of the story: Android does not warn/break/throw exception under this condition. When it fails, it fails silently!