Develop Reference

android studio keeps forcing emulated sd card when running on device, cannot stop it

I'm just try to transfer over data from my app to my new cell phone but all the basic apps only lets me transfer the app and none of its data.
I have created a app that lets me store information on my phone in a txt file, but I need to move it to my new phone. I would like to have an export/import function instead of just hardcoding the data into a new version of the app.
Only problem, I cannot access the SD card when I run 'app' from android studio (To the device thru USB). It does not matter if the SD card is installed or not, It just keeps defaulting to an emulated SD card. Tried switching SD's between phones (file not found). I have mostly installed the app thru running in android studio to my phone. Maybe that is why I cannot access the SD card, because a setting is wrong somewhere?
Is there a way to make android studio stop using emulated drives and make it use only physical drives?
if(Environment.MEDIA_MOUNTED.equals(state))
Is always true
Found the files here, but not on my SD card
Tons of variations of:
File myFile = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator + "dbimport.txt");
All give the same-
Device Manager:
shell/emulated/0/filename
from app:
Storage/emulated/0/filename

Writing file on ext SD card (KITKAT)

My app records voice and a user complains that he is not able to save the recordings on the external SD card (android 4.4.2).
I know the problem with the KITKAT and I work to adjust this, but until then I want a workaround.
I've instructed him to create a folder on ext. sd card: "extSDcard mount name"/Android/data/myAppPackage/files (using the PC connection) and then to go the app and select the recordings dir to point out to the location above He's telling me isn't working this way...I wonder why, since the path is the app private one?
Is there any solution until I will came up with a new app update?

What is the internal storage path for Samsung Galaxy S3 with OS 4.1.2?

The internal storage path for Samsung galaxy S3 with 4.1.2 keeps on changing.
/mnt/sdcard0/ /mnt/sdcard/ /storage/sdcard0/ /storage/sdcard/
I don't have external card inserted in this phone. And randomly i get the above path locations in Astro file manager App and also the logcat.
Actually my android application transfers file from from one mobile to other using Wifi-Direct technology. When I transfer from Samsung galaxy s3 mini to Samsung galaxy s3 it works well. But the reverse is not happening because it says the "file is not available in specific directory" even if the file does exists.
A sample log from logcat: D/fileUri after substring>>>( 7422):
/mnt/sdcard/Download/flash_transfer.apk D/sender socket fileName>>>(
7422): flash_transfer.apk E/wifidirectdemo( 7422):
/mnt/sdcard/Download/flash_transfer.apk: open failed: ENOENT (No such
file or directory)
But sometimes it shows /storage/sdcard0. Not sure how it changes frequently due to which file transfer is getting interrupted.
Which is the right path for internal sd card for android 4.1.2?

The internal storage path for Samsung galaxy S3 with 4.1.2 keeps on changing.
That is external storage, not internal storage, from the standpoint of the Android SDK.
Which is the right path for internal sd card for android 4.1.2?
There is no "internal sd card" on most Android devices.
Assuming that you mean external storage, the root of external storage is found at the path returned by Environment.getExternalStorageDirectory(). If these files are supposed to go where the user expects "downloads" to go, you can find that location on any device using Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);. Never hardcode paths in Android.

SD card contents in Android

My app writes a text file onto the phone's external storage. I know it works fine because I can find the file via a file manager. What I'm stumped by is this : I can see that the file has been created on the SD Card via the file manager on my phone. When I enable USB storage and connect it to my computer, I don't see the text file.
The path was : "mnt/sdcard/test.txt"
I can see it on my phone. When I mount the sd-card to my computer, I don't see it.
Why is this?
The user permissions have been set correctly. Otherwise the file will not be seen even on the phone.

If you agree to connect the USB storage then the SD card is unmounted and it's not visible to Android and only as USB storage device to the attached USB port.
If you are a developer and you want to investigate files on your device you should connect your device and use adb like that
adb shell ls /mnt/sdcard
There is nothing wrong, you are only missing what Android really does and how you are supposed to connect your terminal to the device.

Insert the following line of code to output the file to the SD card:
FileOutputStream f = new FileOutputStream(file);
Finally step 7:
In the location or Methode where you are saving the txt file within the SD card
Save the file, then compile it and test the application using the Android emulator software or the device.
This can works!!! ;-)

Storing external data in Nook devices

How to store data in Nook device (emulator) without SD card. or how to use /media in Nook device (emulator).

In Eclipse
go to DDMS perspective and select the FileExplorer tab in that select a sd card
after selecting sd card you see the two icon for push file on to device and pull file from the device