Develop Reference

I cannot find the /mnt/sdcard/ folder in my android emulator

I am trying to create a dynamic media browser that takes mp3 files from an sd card and generates a list of songs to browse through.
My issue is that I cannot find the /mnt/sdcard folder. Inside /mnt/ I have an sdcard.img, but I am not sure how to use it.
Here is most of the information that I know:
I am using the latest version of android studio
I have set the emulator up with a Studio-managed 1000m SD card
I formatted the SD card when I got the notification on the emulator, using internal storage.

Google Before Asking...
Select Tools -> Android -> Android Device Monitor
Goto File Explorer Tab
Browse mnt/sdcard OR storage/sdcard
See top-right corner(Small Mobile icons)
Use that icons to push and pull file from the device. It doesn't support drag and drop

Android Studio data xml file

I am looking at tutorials and for some reason I can not find the mysharedpremain.xml file. In my android studio I dont have a data tab.
Can somebody help? The image of the tutorial is below
Thank you

There is no such tab called data in android studio. data/data is the place where the android system stores your application and it's related fies,To see your application and related files you need to access the android file system.
In order to do that follow the below steps
Run your app in an emulator or in a rooted android device
open android device monitor as described in the image you posted
on the left side of the window you will see devices tab click on the emulator/device on which your app is currently running.
Click on file explorer tab and select data folder inside that you will find one more data folder select it and search for package name that matches your app package name and expand it..you will find your preference file if you already created one

Accessing data from device in Android Studio

it's my first question here. I searched a lot on the site but didn't find any answer for my question.
Basically, I want to load a directory containing jpeg and mp3 in the tablet and retrieve the path from these files and put them in a SQLite database. I have no trouble using the database but I don't know how to retrieve the paths of the files or even to verify the existence of the directory. Any hint on how to access these files without putting them in the application drawable and sound folder would be appreciated. Thanks!

Goto the Android Device Monitor in the android studio and new poup window will open with the devices list in the left pane and in the right pan select the File Explorer Tab and that's it

Move an entire folder from windows to Android emulator

Is it possible to move an entire folder as is from windows to an android emulator? - I am sure the answer to this exists somewhere but I am not able to find it. I can move one file at a time either via adb command line or via ddms but neither gives me the option to move entire folder with multiple folders and files inside and when I try to it gives me this error
C:\>adb push C:\Users\peng-lp-10\Desktop\ABC\ /mnt/sdcard/ABC/
cannot stat 'C:\Users\peng-lp-10\Desktop\ABC\': No such file or direct
ory
even if the folder exists.

Look at this question,furikuretsu says:
you can simply drag any sets of files and folders to File Explorer (a window in DDMS perspective). No
need of using arrow icons.
It works fine.

Android file explorer - Eclipse

I am saving data internally to the phone in Eclipse, and I was told the file that it was saving to was located here. I try to open the file by double-clicking it to see the saved data, but nothing comes up. What am I doing wrong?
I am trying to check that it is saving to the file properly. I am trying to verify that it is saving the text here since I am not sure where else it is saving it.
I have tried pulling it, and saving it to my desktop, but all I get is this error:
Failed to pull selection
(null)

The DDMS file explorer LOOKS like a windows file explorer, and so you think you should just click on things and drag them around and so on.
Unfortunately, it isn't. It LOOKS like that but it IS NOT that.
From the Using DDMS page we find:
To work with an emulator or device's file system:
In the Devices tab, select the emulator that you want to view the file system for.
To copy a file from the device, locate the file in the File Explorer and click the Pull file button.
To copy a file to the device, click the Push file button on the File Explorer tab.
Which is to say, you have to use the buttons to copy the file off the phone on to your local filesystem. From there you can read it using all the double clicking and dragging you are used to.

I'm guessing you viewing the file from the file explorer in the DDMS. Once you located the file there's a couple buttons on the top right corner to pull/push files from the device

Pulling the file from the device via the File Explorer is the correct way. Not sure why is it failing. Real phone or emulator?
There's another way though. There's a program called ADB in the Android SDK; it's under platform-tools. Run it with the following parameters:
adb shell cat /data/data/com.mypackage/files/textfile.txt
The package name will vary, obviously. This will print the file contents to the standard output.
EDIT:
Press Windows key+R.
Type "cmd", click OK.
Type or paste the following line:
C:\android-sdk-windows\platform-tools\adb shell cat /data/data/com.mypackage/files/textfile.txt
replacing the com.mypackage name with the name of your app's package, which I cannot possibly know. Also replace the path to the Android SDK, if needed.
Press Enter.
Watch the output.
EDIT2: by the way, are you closing the stream after writing the data? That could be the reason you could not pull the file via the File Explorer.