Android Get Application's 'Home' Data Directory

Question

A simple question, relating to the default 'home' directory when an app writes to the internal memory. By default, any files created are placed by the OS (2.2) in:

/data/data/your.package/files

When reading in files, the same default is used, when keeping in proper context via openFileInput(), openFileOutput(). But if I need to check file existence, for instance, using the File class, I need to specify the whole path in the constructor.

I see there are Environment.getDataDirectory() (returns /data), Environment.getRootDirectory() (returns /system), etc, but nothing related to getting the app's 'home' directory.

It's not a huge deal, but I'd rather not hard-code the full path into my App for File to use (say the package name changes, say the path changes in a future OS release) if there is some way to reference the app's 'home' directory programmatically.

related http://stackoverflow.com/questions/5527764/get-application-directory — Ciro Santilli新疆棉花TRUMP BAN BAD, Dec 23 '15 at 12:53

score 98 · Accepted Answer · answered Jan 19 '11 at 18:54

98

Of course, never fails. Found the solution about a minute after posting the above question... solution for those that may have had the same issue:

ContextWrapper.getFilesDir()

Found here.

answered Jan 19 '11 at 18:54

Paul Mennega

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This returns `/data/data//files`, but how to get path with out this "files"? – Prizoff Sep 19 '12 at 15:33
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@Prizoff Use Context.getApplicationInfo().dataDir, as per [Kevin's answer below](http://stackoverflow.com/a/12792520/80425) – David Snabel-Caunt Feb 07 '13 at 12:36
are you searching for this :-http://stackoverflow.com/questions/5527764/get-application-directory – Ali Imran Sep 12 '13 at 07:35
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The right way is: context.getApplicationContext().getFilesDir() – David Apr 30 '14 at 10:40
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Quote: "Of course, never fails" is not completely true. They fixed a number of race conditions in Android 4.4 ...(see https://code.google.com/p/android/issues/detail?id=8886) – Michel Oct 20 '14 at 09:51
@Paul Mennega how can i find all pacakges and its cache size ? – Erum Feb 12 '15 at 04:47
This is returning "/data/user/0//files" on my Google Nexus 6, which is the wrong folder. – Mooing Duck Apr 06 '16 at 21:30
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@MooingDuck It is because of the multi-user feature. http://android.stackexchange.com/questions/48393/what-kind-of-data-is-stored-in-data-user-directory – TigerHix Sep 09 '16 at 10:13
applicationContext.filesDir.path.dropLast(5) – user4401 Mar 16 '19 at 18:49
@Prizoff I believe you are looking for getFilesDir().getParentFile(). This returns the parent directory f your application's internal storage. Inside this directory you have got all other directories likes files or caches. – prateek Oct 08 '20 at 11:53

score 38 · Answer 2 · edited Mar 23 '16 at 23:09

38

You can try Context.getApplicationInfo().dataDir if you want the package's persistent data folder.

getFilesDir() returns a subroot of this.

edited Mar 23 '16 at 23:09

Krystian

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answered Oct 09 '12 at 03:42

Learn OpenGL ES

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This is returning "/data/user/0/" on my Google Nexus 6, which is the wrong folder. – Mooing Duck Apr 06 '16 at 21:31

score 14 · Answer 3 · answered Sep 12 '13 at 07:49

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To get the path of file in application package;

ContextWrapper c = new ContextWrapper(this);
Toast.makeText(this, c.getFilesDir().getPath(), Toast.LENGTH_LONG).show();

answered Sep 12 '13 at 07:49

Ali Imran

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Android Get Application's 'Home' Data Directory

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