Android file reading. I am learning android and a beginner. I wish create an app in which user can can download and excel file into the external storage(I mean accessible internal storage and preferably not SD card). On button click file browser should pop and user can guide to the file. Later reading the file in android. I have seen lot resource folder and asset folder. This is not I want. If anyone have done this please help. Struggling for a quiet long to achieve this. So far using the URI I am able to get the root folder and select the file but not sure how to select the file.
i want to display files stored in sdcard on clicking button in my android app. How do i do that?
I search a lot for browsing sdcard for files which i can choose for attachment in my android Tab app.
There is a open source project which gives you a complete file picker and can be invoked using intents
https://github.com/iPaulPro/aFileChooser
See this link. its File Chooser example in that you will get current Directory.
Now you have do that like on touch of list item you have to get that doc path and that will useful to send to server or ant other purpose. Make sure if you delete that file from sd card then it will not work .
I am facing a problem in android emulator.
In my app i want to download image from url and stored in to sd card.
I am able to download and store the images on sdcard but there is one problem ?
When i download the images and store them, when I want to see that on sdcard gallary I cant see them. But when i scan the sdcard from dev tools-->Media Provider--Scan sdcard .
I got the images.
But dont want to scan sdcard in this way every time?
How to avoid it?
any suggetion?
Use MediaScanner.scanFile() to notify the system of the new files.
If you post your code snippet we may give some suggestion
It depends on how you are giving sdcard path to save the downloaded image
Eclipse DDMS File Explorer File uploading for gallery but not showing in android emulator gallery. Any idea please help I am new in android.
Uploading a file via DDMS does not cause the MediaStore to recognize the file, and it is the MediaStore index that is used by the Gallery app.
From code, you can use MediaScannerConnection to force a re-scan. Or, restart the emulator, as external storage is re-scanned on each startup.
BTW, I am assuming that you uploaded the file to some place on external storage (e.g., /mnt/sdcard/).
I had the same problem with this so I am taking the time to provide an answer.
Uploading media to emulator:
After you upload the media to the emulator click on the Dev Tools icon.
Then go to Media Provider
Press the Scan SD Card button.
Now, your images should show.
I keep some png files on the user's sd card. Some users report that these images are showing up in their gallery application. Sounds like the gallery implementation on some devices search out any image files they can find on the sd card and show it in the gallery. Is there a way to tell the system not to include these images in the gallery? It's just an annoyance to the users.
Thanks
You can hide individual files from the gallery with a . prefix. For example .myimage.png
I'm not sure what version dependencies the above has and it doesn`t work with some third-party picture tools like the Gallery.
You should add a file named .nomedia into the directory where your images are. You may need to eject and re-insert the SD card before the images disappear from gallery (or otherwise trigger the media scanner) after creating this file on a phone that the Gallery has already picked up the files in the Gallery.
I think the .nomedia option is the best solution, although again, third party tools may not respect the .nomedia flag.
Hiding your files from the Media
Scanner Include an empty file named
.nomedia in your external files
directory (note the dot prefix in the
filename). This will prevent Android's
media scanner from reading your media
files and including them in apps like
Gallery or Music.
In http://developer.android.com/guide/topics/data/data-storage.html#filesExternal
You may also consider saving those files as cache files or in the internal memory. More info in that link.
just keep the files in a folder and name the folder starting with a '.'
for example:
Pictures
Videos
.private--> will not be scanned for any media
Eboks
Along with these solutions using picasa is an alternative too... and .nomedia or .foldername suggestions are generally useful but...
Including accepted answer none of the solutions solve album covers problem.
A large number of android users are storing album covers inside the album folder and .dirname or .nomedia solutions are hiding all from both gallery and music player. The required functionality is hiding from gallery and showing in music player (else there is no reason for not deleting cover pics if we will not see them right? )
Here is the solution ;
Rename all album cover picture files to albumart.jpg
(or what picture you desire to hide from gallery)
This way gallery will not include them and music player will still use :)
Alternatively for any folder if you place a folder.jpg file in it that file will be ignored by gallery application.
As you can see we can only exclude max 2 files (pictures) from gallery application, not more :(
After you do this changes no need to clean caches of gallery and media scanner and reboot (still an option) just run an application that triggers scanning of media on every run. I prefer vaulty it refreshes media gallery on every run on photos, but there are lots of apps, maybe you already have one installed , just use it no need to install an application for just this media scan deal.
Knowledge source : http://code.google.com/p/android/issues/detail?id=35879
While making external directory use something like this
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory("YourDirectoryName"),"YourFolderName");
Instead of
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "YourFolderName");
These files won't be detected by gallery for more reference check saving media files on this link
http://developer.android.com/guide/topics/media/camera.html#intent-receive
Neither Windows nor Android allow the creation of the file .nomedia
It's seen as a file extension without a name.
i tried everything but only this solution worked 100% you need to plug in your urb and format the sdcard check quick format box and press on restore defaults and then it will show everything in ur gallery just you need to move all your images again :)
You can easily create the folder in Windows using Powershell
New-Item -path 'C:\Users\Google Drive\Pictures\.nomedia' -itemtype directory