Result of 'File.mkdirs()' is ignored

Question

This is my Code inside myDir.mkdirs(); this code show me that warning of Result of File.mkdirs() is ignored.

I try to fix this Warning but I failed.

   private void saveGIF() {
            Toast.makeText(getApplicationContext(), "Gif Save", Toast.LENGTH_LONG).show();
            String filepath123 = BuildConfig.VERSION_NAME;
            try {
                File myDir = new File(String.valueOf(Environment.getExternalStorageDirectory().toString()) + "/" + "NewyearGIF");enter code here

    //My Statement Code This Line Show Me that Warning

 myDir.mkdirs();

                File file = new File(myDir, "NewyearGif_" + System.currentTimeMillis() + ".gif");
                filepath123 = file.getPath();
                InputStream is = getResources().openRawResource(this.ivDrawable);
                BufferedInputStream bis = new BufferedInputStream(is);
                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                byte[] img = new byte[AccessibilityNodeInfoCompat.ACTION_NEXT_HTML_ELEMENT];
                while (true) {
                    int current = bis.read();
                    if (current == -1) {
                        break;
                    }
                    baos.write(current);
                }
                FileOutputStream fos = new FileOutputStream(file);
                fos.write(baos.toByteArray());
                fos.flush();
                fos.close();
                is.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
            Intent mediaScanIntent = new Intent("android.intent.action.MEDIA_SCANNER_SCAN_FILE");
            mediaScanIntent.setData(Uri.fromFile(new File(filepath123)));
            sendBroadcast(mediaScanIntent);
        }

Answer 1

The method mkdirs has a boolean return value, which you didn't use.

 boolean wasSuccessful = myDir.mkdirs();

The create operation returns a value, which indicates if the creation of the directory was successful. For example, the result value wasSuccessful can be used to display an error when it is false.

if (!wasSuccessful) { 
    System.out.println("was not successful."); 
}

From the Java docs about the boolean return value:

true if and only if the directory was created, along with all necessary parent directories; false otherwise

Answer 2

File CDir = new File(Environment.getExternalStorageDirectory(), IMPORT_DIRECTORY);
if (!CDir.exists()) {
    boolean mkdir = CDir.mkdir();
    if (!mkdir) {
        Log.e(TAG, "Directory creation failed.");
    }
}

mkdir return a Boolean value. we need to catch the return value from mkdir .Replace your code with this and check (warning of Result of File.mkdirs() is ignored.) will be gone