Impossible, first off the code is running on an Android device so it's gonna search for a C:/
disk on de device.
It is possible to get files from outside the app package by checking the sd card for particular files, but still an sd card on the device of course.
As example:
File sdCardLocation = new File(
Environment.getExternalStorageDirectory(),
"//FolderOrFile//OnTheSDCard.png"
);
if(sdCardLocation.exists())
Log.d("OMG SDCARD EXIST!", sdCardLocation.getAbsolutePath());
But you have to add this permission to your AndroidManifest.xml
:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />