How to delete internal storage file in android?

Question

I have used the Android internal storage to save a file for my application (using openFileOutput) but I would like to delete that file, is it possible and how?<

Answer 1

File dir = getFilesDir();
File file = new File(dir, "my_filename");
boolean deleted = file.delete();

Answer 2

Use delete method of File

Answer 3

Another alternative in Kotlin

val file: File = context.getFileStreamPath("file_name")
val deleted: Boolean = file.delete()

Answer 4

If you want to delete all files from a folder then use the following function:

private void deleteTempFolder(String dir) {
        File myDir = new File(Environment.getExternalStorageDirectory() + "/"+dir);
        if (myDir.isDirectory()) {
            String[] children = myDir.list();
            for (int i = 0; i < children.length; i++) {
                new File(myDir, children[i]).delete();
            }
        }
    }

Folder must be present on storage. If not we can check one more codition for it.

  if (myDir.exists() && myDir.isDirectory()) {
//write same defination for it.
}

Answer 5

new File(mUri.toString).delete(); 

Answer 6

I know this is a bit of an oldie, but the docs say to use:

deleteFile("filename");

rather than:

File.delete();

Which if you are already using:

getFilesDir();

kind of makes sense.