Question

I am deleting an image file from my application. I was doing

new  File(filename).delete ();

This was actually deleting the file. But the image was still visible in the gallery.

On search i found that we should use

getContentResolver().delete(Uri.fromFile(file), null,null); to delete

But here i am getting the exception:

Unknown file URL. java.lang.IllegalArgumentException: Unknown URL
file:///mnt/sdcard/DCIM/Camera/IMG_20120523_122612.jpg

When i see with any file browser, this particular image is present. Please help me to fix this issue. Is there any other way to update gallery when image is physically deleted

Answer 1

Use the code below, it may help you.

File fdelete = new File(file_dj_path);
if (fdelete.exists()) {
    if (fdelete.delete()) {
        System.out.println("file Deleted :" + file_dj_path);
    } else {
        System.out.println("file not Deleted :" + file_dj_path);
    }
}

---

to refresh gallery after deleting image use below code for send Broadcast

(for < KITKAT API 14)

 sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED,
 Uri.parse("file://" +  Environment.getExternalStorageDirectory())));

For >= KITKAT API 14 use below code

MediaScannerConnection.scanFile(this, new String[] { Environment.getExternalStorageDirectory().toString() }, null, new MediaScannerConnection.OnScanCompletedListener() {
            /*
             *   (non-Javadoc)
             * @see android.media.MediaScannerConnection.OnScanCompletedListener#onScanCompleted(java.lang.String, android.net.Uri)
             */
            public void onScanCompleted(String path, Uri uri) 
              {
                  Log.i("ExternalStorage", "Scanned " + path + ":");
                  Log.i("ExternalStorage", "-> uri=" + uri);
              }
            });

Because:

ACTION_MEDIA_MOUNTED

is deprecated in KITKAT(API 14).

---

EDITED 04-09-2015

its working fine check below code

public void deleteImage() {
        String file_dj_path = Environment.getExternalStorageDirectory() + "/ECP_Screenshots/abc.jpg";
        File fdelete = new File(file_dj_path);
        if (fdelete.exists()) {
            if (fdelete.delete()) {
                Log.e("-->", "file Deleted :" + file_dj_path);
                callBroadCast();
            } else {
                Log.e("-->", "file not Deleted :" + file_dj_path);
            }
        }
    }

    public void callBroadCast() {
        if (Build.VERSION.SDK_INT >= 14) {
            Log.e("-->", " >= 14");
            MediaScannerConnection.scanFile(this, new String[]{Environment.getExternalStorageDirectory().toString()}, null, new MediaScannerConnection.OnScanCompletedListener() {
                /*
                 *   (non-Javadoc)
                 * @see android.media.MediaScannerConnection.OnScanCompletedListener#onScanCompleted(java.lang.String, android.net.Uri)
                 */
                public void onScanCompleted(String path, Uri uri) {
                    Log.e("ExternalStorage", "Scanned " + path + ":");
                    Log.e("ExternalStorage", "-> uri=" + uri);
                }
            });
        } else {
            Log.e("-->", " < 14");
            sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED,
                    Uri.parse("file://" + Environment.getExternalStorageDirectory())));
        }
    }

below is logs

09-04 14:27:11.085    8290-8290/com.example.sampleforwear E/-->﹕ file Deleted :/storage/emulated/0/ECP_Screenshots/abc.jpg
09-04 14:27:11.085    8290-8290/com.example.sampleforwear E/-->﹕ >= 14
09-04 14:27:11.152    8290-8290/com.example.sampleforwear E/﹕ appName=com.example.sampleforwear, acAppName=/system/bin/surfaceflinger
09-04 14:27:11.152    8290-8290/com.example.sampleforwear E/﹕ 0
09-04 14:27:15.249    8290-8302/com.example.sampleforwear E/ExternalStorage﹕ Scanned /storage/emulated/0:
09-04 14:27:15.249    8290-8302/com.example.sampleforwear E/ExternalStorage﹕ -> uri=content://media/external/file/2416