Can't write file on SD-card (Is a directory)

Question

I'm getting the following error when trying to write midi-file on the Android SD-Card:

12-14 16:22:22.219: ERROR/Thread writer(1108): java.io.FileNotFoundException: /mnt/sdcard/folder/midifiles/file.mid (Is a directory) in /mnt/sdcard/folder/midifiles/

That's the relevant code:

public void writeFile(String filename, String dir, int bpm) throws Exception {          

    File f = new File(dir,filename);    
    if(!f.exists()) {
        f.mkdirs();

        if(!f.createNewFile()) {
            return; 
        }
    }
    FileOutputStream fos = new FileOutputStream(f);

I'm receiving the path via

Environment.getExternalStorageDirectory()

The relevant permission has been included as well.

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

The file-writer is located in an external project/library... if this is in any case useful to know.

I guess that this is kind of a simple mistake, but I honestly have no idea what went wrong here.

Thanks in advance.

Answer 1

You are creating the directory /mnt/sdcard/folder/midifiles/file.mid with

f.mkdirs();

You should just do:

File f = new File(dir);    
if(!f.exists()) {
    f.mkdirs();

    File f1 = new File(dir,filename);    
    if(!f1.createNewFile()) {
       return; 
    }
}

or just

File f = new File(dir,filename);    
if(!f.exist()) {
    f.createNewFile();
    return; 
}

Answer 2

Are you running this on your phone? or connected to your pc? because it may be looking on your pc.