better download progress notification, prevent notification spam

res/values/strings.xml

@@ -103,7 +103,7 @@
 	<string name="dialog_cancel">Cancel</string>
 	<string name="syncing_offline_data">Synchronizing offline data...</string>
 	<string name="dialog_offline_switch_prompt">Download unread articles and go offline?</string>
-	<string name="notify_downloading_articles">Downloading articles...</string>
+	<string name="notify_downloading_articles">Downloading articles (%1$d)...</string>
 	<string name="notify_downloading_init">Starting download...</string>
 	<string name="notify_downloading_feeds">Downloading feeds...</string>
 	<string name="notify_uploading_sending_data">Sending data to server...</string>
@@ -113,4 +113,5 @@
 	<string name="offline_mode">Offline mode</string>
 	<string name="offline_image_cache_enabled">Cache images</string>
 	<string name="offline_image_cache_enabled_summary">Download images to sdcard. This might significantly increase time it takes to go offline.</string>
+	<string name="notify_downloading_images">Downloading images (%1$d)...</string>
 </resources>

src/org/fox/ttrss/ImageCacheService.java

@@ -12,7 +12,9 @@ import java.util.Date;
 
 import android.app.ActivityManager;
 import android.app.IntentService;
+import android.app.Notification;
 import android.app.NotificationManager;
+import android.app.PendingIntent;
 import android.app.ActivityManager.RunningServiceInfo;
 import android.content.Intent;
 import android.os.Environment;
@@ -117,6 +119,26 @@ public class ImageCacheService extends IntentService {
 	        return null;
 	    }
 	}
+	
+	private void updateNotification(String msg) {
+		Notification notification = new Notification(R.drawable.icon, 
+				getString(R.string.notify_downloading_title), System.currentTimeMillis());
+		
+		PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
+                new Intent(this, MainActivity.class), 0);
+		
+		notification.flags |= Notification.FLAG_ONGOING_EVENT;
+		notification.flags |= Notification.FLAG_ONLY_ALERT_ONCE;
+		
+        notification.setLatestEventInfo(this, getString(R.string.notify_downloading_title), msg, contentIntent);
+                       
+        m_nmgr.notify(NOTIFY_DOWNLOADING, notification);
+	}
+
+	private void updateNotification(int msgResId) {
+		updateNotification(getString(msgResId));
+	}
+	
 	@Override
 	protected void onHandleIntent(Intent intent) {
 		String url = intent.getStringExtra("url");
@@ -156,6 +178,8 @@ public class ImageCacheService extends IntentService {
 						
 						m_imagesDownloaded++;
 						
+						updateNotification(getString(R.string.notify_downloading_images, m_imagesDownloaded));
+						
 					} catch (IOException e) {
 						e.printStackTrace();
 					}

src/org/fox/ttrss/OfflineDownloadService.java

@@ -75,6 +75,9 @@ public class OfflineDownloadService extends IntentService {
 		PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
                 new Intent(this, MainActivity.class), 0);
 		
+		notification.flags |= Notification.FLAG_ONGOING_EVENT;
+		notification.flags |= Notification.FLAG_ONLY_ALERT_ONCE;
+		
         notification.setLatestEventInfo(this, getString(R.string.notify_downloading_title), msg, contentIntent);
                        
         m_nmgr.notify(NOTIFY_DOWNLOADING, notification);
@@ -115,7 +118,7 @@ public class OfflineDownloadService extends IntentService {
 			intent.addCategory(Intent.CATEGORY_DEFAULT);
 			sendBroadcast(intent);
         } else {
-        	updateNotification("Downloading images...");
+        	updateNotification(getString(R.string.notify_downloading_images, 0));
         }
         
         m_readableDb.close();
@@ -140,6 +143,8 @@ public class OfflineDownloadService extends IntentService {
 	private void downloadArticles() {
 		Log.d(TAG, "offline: downloading articles... offset=" + m_articleOffset);
 		
+		updateNotification(getString(R.string.notify_downloading_articles, m_articleOffset));
+		
 		OfflineArticlesRequest req = new OfflineArticlesRequest(this);
 		
 		@SuppressWarnings("serial")
@@ -195,8 +200,6 @@ public class OfflineDownloadService extends IntentService {
 						
 						getWritableDb().execSQL("DELETE FROM articles;");
 						
-						updateNotification(R.string.notify_downloading_articles);
-
 						downloadArticles();
 					} catch (Exception e) {
 						e.printStackTrace();

src/org/fox/ttrss/OfflineUploadService.java

@@ -50,6 +50,9 @@ public class OfflineUploadService extends IntentService {
 		PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
                 new Intent(this, MainActivity.class), 0);
 		
+		notification.flags |= Notification.FLAG_ONGOING_EVENT;
+		notification.flags |= Notification.FLAG_ONLY_ALERT_ONCE;
+		
         notification.setLatestEventInfo(this, getString(R.string.notify_uploading_title), msg, contentIntent);
                        
         m_nmgr.notify(NOTIFY_UPLOADING, notification);