Delete file after sharing via intent

Question

I\'m trying to delete a temporary file after sharing it via android\'s Intent.ACTION_SEND feature. Right now I am starting the activity for a result and in OnActivityResult,

Answer 1

What I did is the following.

I used the:

myfile.deleteOnExit();

However, as D.R. mentioned in the comment below correct answer, this does not guarantee the file deletion. This is why I am also deleting the file after the Shared Activity returns. I delete the file if file exists. Because the app crashed sometimes, I put it inside try{} and it works.

I do not know why it does not work for you, but for me it works at least for Gmail attachement, TextSecure, Hangouts.

In class delcaration:

static File file;

In method that calles the Intent:

        Intent share = new Intent(Intent.ACTION_SEND);
        share.setType("image/png");

        // Compress the bitmap to PNG
        ByteArrayOutputStream bytes = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.PNG, 100, bytes);

        // Temporarily store the image to Flash
        File sdCard = Environment.getExternalStorageDirectory();
        File dir = new File (sdCard.getAbsolutePath() + "/FolderName");
        dir.mkdirs();

        // This file is static.
        file = new File(dir, "FileName.png");

        try {
            file.createNewFile();
            FileOutputStream fo = new FileOutputStream(file);
            fo.write(bytes.toByteArray());
            fo.flush();
            fo.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

        // Share compressed image
        share.putExtra(Intent.EXTRA_STREAM, Uri.parse("file:///"+file.getPath()));

        /** START ACTIVITY **/
        startActivityForResult(Intent.createChooser(share,"Share Image"),1);

        // Delete Temporary file
        file.deleteOnExit();     // sometimes works

In an extra method:

protected void onActivityResult(int requestCode, int resultCode, Intent data) {   
        // Because app crashes sometimes without the try->catch 
        try {
            // if file exists in memory
            if (file.exists()) {
                file.delete();
            }
        } catch (Exception e) {
            Log.d(LOG,"Some error happened?");
        }

    }