add media scanner notification after successful download

app/src/main/java/org/schabi/newpipe/download/DownloadDialog.java

@@ -32,6 +32,7 @@ import java.util.ArrayList;
 import java.util.List;
 
 import us.shandian.giga.get.DownloadManager;
+import us.shandian.giga.get.DownloadMission;
 import us.shandian.giga.service.DownloadManagerService;
 
 
@@ -227,7 +228,11 @@ public class DownloadDialog extends DialogFragment {
                     fName + arguments.getString(FILE_SUFFIX_AUDIO),
                     audioButton.isChecked(),
                     threads.getProgress() + 1);
-            mBinder.onMissionAdded(mManager.getMission(res));
+            DownloadMission mission = mManager.getMission(res);
+            mBinder.onMissionAdded(mission);
+            // add download listener to allow media scan notification
+            DownloadListener listener = new DownloadListener(getContext(), mission);
+            mission.addListener(listener);
         }
 
         if(videoButton.isChecked()){
@@ -236,7 +241,11 @@ public class DownloadDialog extends DialogFragment {
                     fName + arguments.getString(FILE_SUFFIX_VIDEO),
                     audioButton.isChecked(),
                     threads.getProgress() + 1);
-            mBinder.onMissionAdded(mManager.getMission(res));
+            DownloadMission mission = mManager.getMission(res);
+            mBinder.onMissionAdded(mission);
+            // add download listener to allow media scan notification
+            DownloadListener listener = new DownloadListener(getContext(), mission);
+            mission.addListener(listener);
         }
         getDialog().dismiss();
 

app/src/main/java/org/schabi/newpipe/download/DownloadListener.java

@@ -0,0 +1,46 @@
+package org.schabi.newpipe.download;
+
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+
+import us.shandian.giga.get.DownloadMission;
+import us.shandian.giga.get.DownloadMission.MissionListener;
+
+/**
+ * Created by erwin on 06.11.16.
+ */
+
+class DownloadListener implements MissionListener
+{
+    DownloadMission mMission;
+    Context mContext;
+
+    public DownloadListener(Context context, DownloadMission mission)
+    {
+        super();
+        mMission = mission;
+        mContext = context;
+    }
+
+    @Override
+    public void onProgressUpdate(long done, long total)
+    {
+        // do nothing special ...
+    }
+
+    @Override
+    public void onFinish()
+    {
+        // notify media scanner on downloaded media file ...
+        mContext.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE,
+                                          Uri.parse( "file://" + mMission.location
+                                                     + "/" + mMission.name)));
+    }
+
+    @Override
+    public void onError(int errCode)
+    {
+        // do nothing special ...
+    }
+}