Question

I have an Android app where I need to save a file.
I create the file like this:

FileOutputStream fOut = openFileOutput(fileName, 
                    MODE_WORLD_READABLE);
            osw = new OutputStreamWriter(fOut);

I open it like this:

FileInputStream srcFileStream = openFileInput(fileName);

This works fine with internal memory files.
I’ve added a prefrences to my app, where the user can select to save the file to the sd card instead.
I try this command:

if (Prefs.getCard(this))
        fileName="/sdcard/"+fileName;

Meaning that if the Prefrences is yes, I add “/sdcard/” infront of the file name.
The rest of the code remains the same,

This does not seem to work, as I get an Exception:

File /sd/file1 contains a path seperator

How can I use the same code for both saving to SD card and to internal memory, with just a small modification as i tried above?

Answer 1

This should work..

String baseDir = "";
String fileName = "myFile.txt";
FileOutputStream fOut = null;
if (Prefs.getCard(this)) {
    baseDir = Environment.getExternalStorageDirectory().getAbsolutePath();
    File file = new File(baseDir + fileName);
    fOut = new FileOutputStream(file)
}  else {
    fOut = openFileOutput(fileName, MODE_WORLD_READABLE);
}
if (fOut != null) {
    osw = new OutputStreamWriter(fOut);
    ...
}