From a243a9495973dd676603030468b66164544a3d36 Mon Sep 17 00:00:00 2001
From: wzhu <simon@ulugame.com>
Date: Thu, 24 Dec 2020 11:45:26 +0800
Subject: [PATCH] Add automatic resume for unexpected quited works.

---
 .../java/vn/hunghd/flutterdownloader/DownloadWorker.java  | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/android/src/main/java/vn/hunghd/flutterdownloader/DownloadWorker.java b/android/src/main/java/vn/hunghd/flutterdownloader/DownloadWorker.java
index 97753ced..1a550bd9 100644
--- a/android/src/main/java/vn/hunghd/flutterdownloader/DownloadWorker.java
+++ b/android/src/main/java/vn/hunghd/flutterdownloader/DownloadWorker.java
@@ -189,6 +189,14 @@ public Result doWork() {
         updateNotification(context, filename == null ? url : filename, DownloadStatus.RUNNING, task.progress, null, false);
         taskDao.updateTask(getId().toString(), DownloadStatus.RUNNING, task.progress);
 
+        //automatic resume for partial files. (if the workmanager unexpectedly quited in background)
+        String saveFilePath = savedDir + File.separator + filename;
+        File partialFile = new File(saveFilePath);
+        if (partialFile.exists()) {
+            isResume = true;
+            log("exists file for "+ filename + "automatic resuming...");
+        }
+
         try {
             downloadFile(context, url, savedDir, filename, headers, isResume);
             cleanUp();