File write permission error in Android

Question

I am writing a file to SDCard and set <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> it works good upto 3.x but on 4.0 it gives the below error.

java.io.IOException: open failed: EACCES (Permission denied)
at java.io.File.createNewFile(File.java:940)
at com.gt.mLearning.app.VideoViewActivity.copyFile(VideoViewActivity.java:204)
at com.gt.mLearning.app.VideoViewActivity.access$3(VideoViewActivity.java:193)
at com.gt.mLearning.app.VideoViewActivity$Loader.doInBackground(VideoViewActivity.java:61)
at com.gt.mLearning.app.VideoViewActivity$Loader.doInBackground(VideoViewActivity.java:1)
at android.os.AsyncTask$2.call(AsyncTask.java:264)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
at java.util.concurrent.FutureTask.run(FutureTask.java:137)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
at java.lang.Thread.run(Thread.java:856)
Caused by: libcore.io.ErrnoException: open failed: EACCES (Permission denied)
at libcore.io.Posix.open(Native Method)
at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110)
at java.io.File.createNewFile(File.java:933)

Any help or suggestion?

rohit

Answer 1

Just guessing but did you probably have your phone still connected to the computer? This error might happen if your sd card is still locked as a usb device. Hope this helped, Tobias

Answer 2

Latter on I discovered that the issue is device specific. I installed the File Manager app from Android market and it shows no write permission. It mean the Android OS implementation of that manufacturer do not provide write permission which is causing the issue.