Android: Asus Nexus 7 does not commit emulated memory until restart

Question

I have a very specific issue - I am trying to write to external storage on an Asus Nexus 7, but it is writing to the emulated directory on the device.

Here is the code I am using:

public static void writeExternalMedia(Context context) {
    if(isExternalStorageWritable()) {
        String content = "hello world";

        File filedir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS) + "/test");
        filedir.mkdir();

        File file;

        FileOutputStream outputStream;

        try {
            file = new File(filedir, "test.txt");

            if (!file.exists()) {
                file.createNewFile();
            }

            outputStream = new FileOutputStream(file);
            outputStream.write(content.getBytes());
            outputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
}

Whenever I restart the device, the directories appear under the device when plugged in, which is what I would expect to happen when the function above gets executed.

I have tried searching for a solution and cannot find the answer to my question.

I'm pretty sure it's the same as this: http://stackoverflow.com/questions/37946892/files-copied-by-my-app-not-showing-up-on-pc — Budius, Jun 23 '16 at 15:47
I utilized that methodology and it did not work, unfortunately. Thanks for the effort though! — eplewis89, Jun 23 '16 at 15:52

score 1 · Answer 1 · answered Jun 23 '16 at 15:51

I made two methods. One for creating a file and one for appending to it. I think the issue is that you're not calling createNewFile.

private File CreateFile(String fileName)
{
    File file = new File(this.getFilesDir(), fileName);
    try
    {
        if(!file.exists())
        {
            file.createNewFile();
        }
    }
    catch (IOException e)
    {
        e.printStackTrace();
    }
    return file;
}

private void appendToFile(String file, String content)
{
    try
    {
        OutputStreamWriter outputStreamWriter = new OutputStreamWriter(this.openFileOutput(file, this.MODE_APPEND));
        outputStreamWriter.append(content + "\n");
        outputStreamWriter.close();
    }
    catch (IOException e)
    {
        e.printStackTrace();
    }
}

Thanks for trying, but that didn't work. The file directory that I am trying to utilize resides on the external storage. The actual directory being written to is reported as "/storage/emulated/0/Download/test". When I write a file to this emulated directory, which works flawlessly, the file does not appear until the device restarts. — eplewis89, Jun 23 '16 at 16:00

score 0 · Answer 2 · edited May 23 '17 at 12:08

0

Alright after much searching and testing I finally came across a solution, linked via one of the other answers.

https://stackoverflow.com/a/28448843/979220

The solution was to scan the media files, which causes the files to propagate to the external storage, rather than staying in the emulated storage.

edited May 23 '17 at 12:08

Community

1
1

answered Jun 23 '16 at 16:20

eplewis89

112
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Android: Asus Nexus 7 does not commit emulated memory until restart

2 Answers2

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