Develop Reference

Which permission are necessary to read and write a file on internal storage on an ios/android device/emulator?

I need to write and read a file on ios and android internal storage and iam not sure which permissions i have to set in the podfile/info.plist?
Thank you!

For Android you need to update AndroidManifest.xml file and add :
<manifest>
...
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<application>
...
And for IOS there is no permission required. For more info to write file to secondary storage look at Apple Documentation.

Android : open failed eacces permission denied

i am new to android. i have tried this code
in manifest file i wrote this
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
in java code
File sdcard = Environment.getExternalStorageDirectory();
//Get the text file
File file = new File(sdcard,"store.txt");
but i am getting above exception
i want to perform file read and write operations and i am using version 4.4.2.
i am getting this error
06-14 02:19:44.491: D/Shopping Cart(1700): open failed: EACCES (Permission denied)

Under kitkat your app can only write to an app specific directory on the -removable- sd card. You get possible directories using getExternalFilesDirs().

Is your permission is right place in manifest file as
<application>
...
</application>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
</manifest>
Edit
Try to edit the Emulator
go to android virtual device manager and then edit the emulator
set say 100 MB for Sd card for the respected emulator and say Ok
save and close emulator and start
path saved in DDMS is mnt/sdcard/yourfilename
it worked for me the app is not giving Error and is working
Please see more at this link Cannot Write to sdcard in Android emulator
and this link Guide to Emulating an SD Card Using the Google Android Emulator

Can tinyXML-1 open files on Android?

TinyXML-1 can't open file. File exist on that path, but xmlDoc.ErrorDesc() writes Failed to open file. Can tinyXML1 open files on android or I must use Tinyxml2?

What is the exact error on your logcat?
It can be just that you didn't put the required permission:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
In your AndroidManifest.xml

Unable to create a trace file in Android 2.3 using Debug.startMethodTracing

Debug.startMethodTracing("tracefile");
Getting exception while executing above line of code in Android 2.3
java.lang.RuntimeException: Unable to open trace file '/sdcard/copy.trace': Permission denied
I have added required permission in AndroidManifest file:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
My device is from a view server.
Anybody could suggest me any suitable solution for this.
Thanks in Advance.

If this is an emulator, edit the device in AVD and verify that the SD Card: has memory allocated.

Copy a database file in android

I am developing an android application that copies a database file from /data/data/com.example/database.db
But it give me an access denied file
EACCES permission denied
Could anybody help me how to permit the access?

If you are copying you probably need the android.permission.WRITE_EXTERNAL_STORAGE permission in your manifest.
Add this to your manifest:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
(see https://developer.android.com/guide/topics/manifest/uses-permission-element.html for how to use the uses-permission tag in the manifest)
Add it and let us know if you still get the error.