[android-developers] Re: FileObserver
Hi Developers, This is about FileObserver Bug. I am using FileObserver in my application to keep track of newly created, deleted and modified files (images, video, MS Word document and PDF files). I am successful in handling these events in Lollipop but partially successful in Marshmallow. Detailed issue in Marshmallow. 1. I have tested this in Nexus 6 Marshmallow and it works fine. 2. But, when it comes to* LG Marshmallow and Samsung s7 (Marshmallow) *I am not able to capture the files. 3. When I tested in these mobiles, below events are not triggered, the events number are refereed from the this link. https://developer.android.com/reference/android/os/FileObserver.html - *Create - 256 * - *Delete - 512* - *Modified - 2 * These event numbers are *not triggered.* Is this a bug in Marshmallow itself ? Why its not working in Samsung s7 and LG marshmallow devices? Is Samsung and LG devices with Marshmallow restricting us from capturing using file observer? Please share your suggestions and help me to resolve these issues Thank You Shyamkumar M On Thursday, May 3, 2012 at 7:20:50 PM UTC+5:30, Meryeme wrote: > > hey everyone!! > > I have been reading the doc about fileObserver but I did not have > enough information about that. so I am wondering how can we use > FileObserver, can we use for any file I mean even .xml or .db files? do you > konw any tutorial about that? > > -- > Meryeme Ayache. > > *Third year Computer Science Student Engineer at **Ecole Nationale > Supérieure d'Informatique et d'Analyse des Systèmes (Rabat)* > > *Information Security System Major.* > > > > -- 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 android-developers+unsubscr...@googlegroups.com. To post to this group, send email to android-developers@googlegroups.com. Visit this group at https://groups.google.com/group/android-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/android-developers/c3b8364b-a889-447d-9d2b-33ff3069923c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: fileobserver
Hi Developers, This is about FileObserver Bug. I am using FileObserver in my application to keep track of newly created, deleted and modified files (images, video, MS Word document and PDF files). I am successful in handling these events in Lollipop but partially successful in Marshmallow. Detailed issue in Marshmallow. 1. I have tested this in Nexus 6 Marshmallow and it works fine. 2. But, when it comes to* LG Marshmallow and Samsung s7 (Marshmallow) *I am not able to capture the files. 3. When I tested in these mobiles, below events are not triggered, the events number are refereed from the this link. https://developer.android.com/reference/android/os/FileObserver.html - *Create - 256 * - *Delete - 512* - *Modified - 2 * These event numbers are *not triggered.* Is this a bug in Marshmallow itself ? Why its not working in Samsung s7 and LG marshmallow devices? Is Samsung and LG devices with Marshmallow restricting us from capturing using file observer? Please share your suggestions and help me to resolve these issues Thank You Shyamkumar M On Thursday, February 5, 2009 at 4:43:25 PM UTC+5:30, and.pradeep wrote: > > thanks solved it. instead of creating in separate threads i did it in > single thread by creating an instance of fileobserver for each > directory and calling startwatching(); in a loop. > > On Feb 4, 11:03 pm, Dianne Hackborn wrote: > > You don't need to create any threads to use FileObserver -- it is > > callback-based. > > > > On Tue, Feb 3, 2009 at 11:27 PM, pradeep wrote: > > > > > i need to observe a sdcard i.e all the folders inside. i am creating > > > fileobservers for each folder in saparate threads, but i don't think > > > it is efficient. is there any other method for do so? > > > > -- > > Dianne Hackborn > > Android framework engineer > > hack...@android.com > > > > Note: please don't send private questions to me, as I don't have time to > > provide private support. All such questions should be posted on public > > forums, where I and others can see and answer them. > -- 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 android-developers+unsubscr...@googlegroups.com. To post to this group, send email to android-developers@googlegroups.com. Visit this group at https://groups.google.com/group/android-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/android-developers/cc663ec4-b033-47f9-892c-a743fc72022b%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: FileObserver not returning file changes within subfolders?
See an open bug: http://code.google.com/p/android/issues/detail?id=12479 -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: FileObserver not returning file changes within subfolders?
Indeed I was suprised too. I found this post from an android.com offical stating the docs are wrong and sub-folders are NOT watched. Which does match what I'm seeing in my app. Too bad really ... that would be an excellent feature! http://groups.google.com/group/android-platform/browse_thread/thread/fb24c672bb79d7c2 On Oct 12, 12:13 am, FrankG wrote: > Hi Freddy, > > strange .. I thought the FileObserver uses Linux native call > "inotify" , > which is able to send events for directories too, > > What definitly will not work is FileObserver for sysfs entries. > > Good luck ! Frank > > On 12 Okt., 00:41, Freddy wrote: > > > > > ok. I found more info. Apparently the docs are incorrect. > > FileObserver does not support recursive file watching. > > > On Oct 11, 1:50 pm, Freddy wrote: > > > > The FileObserver class doesn't appear to be working as advertised. > > > > I created a class extending the FileObserver class. I initialize the > > > class to watch the path of the sdcard as returned from the Android > > > Environment.getExternalStorageDirectory function. Everything seems to > > > work perfectly as long as the files are in the ROOTof the sdcard. Any > > > files within SUB-FOLDERS of the sdcard are NOT returned to my public > > > void onEvent(int event, String path) callback in my FileObserver > > > class. > > > > Has anyone seen this issue? The docs say files in subfolders should > > > be returned to the onEvent() callback but it's not happening. Note, > > > I've only tested on the Android simulator (v2.2) since I do not yet > > > have access to a device. Maybe this is a bug specific to the > > > simulator? > > > > Thanks!- Zitierten Text ausblenden - > > > - Zitierten Text anzeigen -- Hide quoted text - > > - Show quoted text - -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: FileObserver not returning file changes within subfolders?
Hi Freddy, strange .. I thought the FileObserver uses Linux native call "inotify" , which is able to send events for directories too, What definitly will not work is FileObserver for sysfs entries. Good luck ! Frank On 12 Okt., 00:41, Freddy wrote: > ok. I found more info. Apparently the docs are incorrect. > FileObserver does not support recursive file watching. > > On Oct 11, 1:50 pm, Freddy wrote: > > > > > The FileObserver class doesn't appear to be working as advertised. > > > I created a class extending the FileObserver class. I initialize the > > class to watch the path of the sdcard as returned from the Android > > Environment.getExternalStorageDirectory function. Everything seems to > > work perfectly as long as the files are in the ROOTof the sdcard. Any > > files within SUB-FOLDERS of the sdcard are NOT returned to my public > > void onEvent(int event, String path) callback in my FileObserver > > class. > > > Has anyone seen this issue? The docs say files in subfolders should > > be returned to the onEvent() callback but it's not happening. Note, > > I've only tested on the Android simulator (v2.2) since I do not yet > > have access to a device. Maybe this is a bug specific to the > > simulator? > > > Thanks!- Zitierten Text ausblenden - > > - Zitierten Text anzeigen - -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: FileObserver not returning file changes within subfolders?
ok. I found more info. Apparently the docs are incorrect. FileObserver does not support recursive file watching. On Oct 11, 1:50 pm, Freddy wrote: > The FileObserver class doesn't appear to be working as advertised. > > I created a class extending the FileObserver class. I initialize the > class to watch the path of the sdcard as returned from the Android > Environment.getExternalStorageDirectory function. Everything seems to > work perfectly as long as the files are in the ROOTof the sdcard. Any > files within SUB-FOLDERS of the sdcard are NOT returned to my public > void onEvent(int event, String path) callback in my FileObserver > class. > > Has anyone seen this issue? The docs say files in subfolders should > be returned to the onEvent() callback but it's not happening. Note, > I've only tested on the Android simulator (v2.2) since I do not yet > have access to a device. Maybe this is a bug specific to the > simulator? > > Thanks! -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: FileObserver
Hi, Thanks for the help. Yes, my class name was also FileObserver. Now managed to resolve it. Regards, Perumal On Jul 12, 6:49 pm, Mark Murphy wrote: > On Mon, Jul 12, 2010 at 2:31 AM, perumal316 wrote: > > I want to observe the changes made to the filesystem. I am reposting > > as previously I have used a wrong title to post. > > > I am using FileObserver for this purpose. But I am getting this error > > when i > > import android.os.FileObserver: > > > "The import conflicts with a type defined in the same file" > > > Any idea how to resolve this? > > It sounds like you have a class in this file named FileObserver, or > another import that is importing a class named FileObserver. > > -- > Mark Murphy (a Commons > Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy > > Android App Developer Books:http://commonsware.com/books -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: fileobserver
thanks solved it. instead of creating in separate threads i did it in single thread by creating an instance of fileobserver for each directory and calling startwatching(); in a loop. On Feb 4, 11:03 pm, Dianne Hackborn wrote: > You don't need to create any threads to use FileObserver -- it is > callback-based. > > On Tue, Feb 3, 2009 at 11:27 PM, pradeep wrote: > > > i need to observe a sdcard i.e all the folders inside. i am creating > > fileobservers for each folder in saparate threads, but i don't think > > it is efficient. is there any other method for do so? > > -- > Dianne Hackborn > Android framework engineer > hack...@android.com > > Note: please don't send private questions to me, as I don't have time to > provide private support. All such questions should be posted on public > forums, where I and others can see and answer them. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: fileobserver
what if I have to observe 2 or more folders (or paths)? even then threads are not required? how to register callbacks? On Feb 4, 11:03 pm, Dianne Hackborn wrote: > You don't need to create any threads to use FileObserver -- it is > callback-based. > > On Tue, Feb 3, 2009 at 11:27 PM, pradeep wrote: > > > i need to observe a sdcard i.e all the folders inside. i am creating > > fileobservers for each folder in saparate threads, but i don't think > > it is efficient. is there any other method for do so? > > -- > Dianne Hackborn > Android framework engineer > hack...@android.com > > Note: please don't send private questions to me, as I don't have time to > provide private support. All such questions should be posted on public > forums, where I and others can see and answer them. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: fileobserver
You don't need to create any threads to use FileObserver -- it is callback-based. On Tue, Feb 3, 2009 at 11:27 PM, pradeep wrote: > > i need to observe a sdcard i.e all the folders inside. i am creating > fileobservers for each folder in saparate threads, but i don't think > it is efficient. is there any other method for do so? > > > > -- Dianne Hackborn Android framework engineer hack...@android.com Note: please don't send private questions to me, as I don't have time to provide private support. All such questions should be posted on public forums, where I and others can see and answer them. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
