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FileUriExposedException

ori

Dropbox crashes. (dump is at the end of this question)

I have an app that I had developed for myself.

It used to work with Dropbox untill recently.

I am storing my myfile.or1 on dropbox and

in my app I am using intent-filter to call my app to read it.

I am not using dropbox API.

I did not move to 24 - my targetSdkVersion is 23
My app works fine if I access myfile.or1 from ES file browser.

Any idea?

Thanks Ori

I am adding the complete exception message:

03-01 09:44:46.670 7871-7871/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.dropbox.android, PID: 7871
android.os.FileUriExposedException: file:///storage/emulated/0/Android/data/com_dropbox_android/files/u7110502/scratch/ori/Notes/Amazon.or1 exposed beyond app through Intent.getData()
at android.os.StrictMode.onFileUriExposed(StrictMode.java:1799)
at android.net.Uri.checkFileUriExposed(Uri.java:2346)
at android.content.Intent.prepareToLeaveProcess(Intent.java:8933)
at android.content.Intent.prepareToLeaveProcess(Intent.java:8906)
at android.content.Intent.prepareToLeaveProcess(Intent.java:8894)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1690)
at android.app.ContextImpl.startActivity(ContextImpl.java:836)
at android.app.ContextImpl.startActivity(ContextImpl.java:813)
at android.content.ContextWrapper.startActivity(ContextWrapper.java:357)
at com.dropbox.android.util.ip.a(panda.py:46)
at dbxyzptlk.db3420200.bk.w.run(panda.py:219)
at com.dropbox.android.activity.lock.LockReceiver.a(panda.py:295)
at dbxyzptlk.db3420200.bk.v.a(panda.py:213)
at dbxyzptlk.db3420200.bk.v.a(panda.py:270)
at dbxyzptlk.db3420200.bk.aa.a(panda.py:182)
at dbxyzptlk.db3420200.bk.aa.a(panda.py:33)
at dbxyzptlk.db3420200.et.a.onPostExecute(panda.py:153)
at android.os.AsyncTask.finish(AsyncTask.java:660)
at android.os.AsyncTask.-wrap1(AsyncTask.java)
at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:677)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6209)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)

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Comments

Zed

Hello @ori,

If this keeps happening, you can reach out to our API team here: https://www.dropbox.com/developers/contact

Thanks!

ori

I found out that it happens with every app!

And every file.

If I try to open a file.txt from Dropbox -

Dropbox offers me a list of apps that can open .txt file.

7 out of 9 caus Dropbox to through FileUriExposedException

burnitall

This happens to me too

Mark

I'm moving this to API forum as you'll need to fix the issue in your app for it to work.

burnitall

Hi, this is not an issue with our apps. Dropbox crashes before Android even asks for which app to send it to. You can see that from ori's stack trace. It does not contain any symbol other than Android and Dropbox.

The issue is that Dropbox tries to export a Uri with a "file" scheme. If you look at the documentation for FileUriExposedException, it explains that for apps targeting N, that exception is thrown, and the app needs to be changed to export a "content" scheme. The app exporting the Uri is Dropbox. Dropbox needs to be fixed.

ori

Hi
I appology in advance, this is my first Android app.
So it may be the case that I am 180 degrees of track.

I found a DropBox suggested implementation for a file chooser
But I ended up working around this issue:

On my phone - in DropBox - I set my folder to be 'available offline'
This reults a loacl copy of my folder on my phone at:
/sdcard/Android/data/com.dropbox.android/files/u7778889/scratch/my-folder

I then use ES File Exploer to accsess my local files
with an intent-filter for files not content.

DropBox has a file chooser that I can integreate into my app:
https://www.dropbox.com/developers/documentation/java
The example works but I never integrated it with my app.

Greg-DB

Thanks for the reports! I'll send this over to the right people here to look into it.

MichaelRu

burnitall explained very good why the problem happens. In this blog post you can find how to fix it: https://medium.com/@ali.muzaffar/what-is-android-os-fileuriexposedexception-and-what-you-can-do-about-it-70b9eb17c6d0

This has to be fixed in Dropbox and not in the target apps.