Can't delete File with the File class

Question

Im trying to delete a music file through my App but can't achieve that. Ive checked with

boolean exists = temp.exists();
boolean isFile = temp.isFile();

if there true and yes they are. These methods returns me true. But when I come to the delete method :

boolean deleted = temp.delete();

It returns me False and the file is not getting deleted. There are no Exception throws just a false return to my deleted variable.

Im also using these permissons :

<uses-permission android:name="android.permission.MEDIA_CONTENT_CONTROL" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<uses-permission android:name="android.permission.ACTION_HEADSET_PLUG"/>

Someone got an Idea for a solution ? (Or other classes I can use ?)

Edit: Thats my full code

File temp = new File(str_path);

boolean exists = temp.exists();
boolean isFile = temp.isFile();

if (exists)) {
    boolean deleted = temp.delete();
    if (deleted) {
        Toast.makeText(context, "Successful deleted " + Title_Artist, Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(context, "Not able to delete file " + Title_Artist, Toast.LENGTH_SHORT).show();
            }
        }

(And I checked while debuging if the object has his path in it and it have it)

Answer 1

Delete file music you must do two task:

1. Delete file in Storage.

   public static boolean delete(File path) {
       boolean result = true;
       if (path.exists()) {
           if (path.isDirectory()) {
               for (File child : path.listFiles()) {
                   result &= delete(child);
               }
               result &= path.delete(); // Delete empty directory.
           }
           if (path.isFile()) {
           result &= path.delete();
           }
           if (!result) {
               Log.e("Delete", "Delete failed;");
           }
           return result;
       } else {
           Log.e("Delete", "File does not exist.");
           return false;
       }
   }
   

2. Delete file from MediaStore:

   public static void deleteFileFromMediaStore(final ContentResolver contentResolver, final File file) {
       int sdk = android.os.Build.VERSION.SDK_INT;
       if (sdk >= android.os.Build.VERSION_CODES.HONEYCOMB) {
          String canonicalPath;
          try {
              canonicalPath = file.getCanonicalPath();
          } catch (IOException e) {
              canonicalPath = file.getAbsolutePath();
          }
          final Uri uri = MediaStore.Files.getContentUri("external");
          final int result = contentResolver.delete(uri,
                   MediaStore.Files.FileColumns.DATA + "=?", new String[]{canonicalPath});
          if (result == 0) {
              final String absolutePath = file.getAbsolutePath();
              if (!absolutePath.equals(canonicalPath)) {
               contentResolver.delete(uri,
                       MediaStore.Files.FileColumns.DATA + "=?", new String[]{absolutePath});
               }
           }
       }
   }
   

You can reset/rescan MediaStore instead of do some code above.

Note: If you delete from SD card and android 4.4 +

Change for Android 4.4+ : Apps are not allowed to write (delete, modify ...) to external storage except to their package-specific directories.

Answer 2

The path from your comment looks like the file is on a removable SD card. You need special permissions on Android 4.4+ to manage or delete files on an SD card. You will need to use DocumentFile#delete().

For help accessing files on a removable SD card using DocumentFile see the following StackOverflow post:

How to use the new SD card access API presented for Android 5.0 (Lollipop)?

---

There is also a hack that might work without using DocumentFile as explained by the developer of FX file manager here: http://forum.xda-developers.com/showpost.php?p=52151865