From 18fc64fddbab5352ba3e51b260ea7a6cbd8e3cfe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebasti=C3=A1n=20Katzer?= <katzer.sebastian@googlemail.com>
Date: Sun, 29 Jan 2017 11:16:53 +0100
Subject: [PATCH] Allow app from being excluded from recent list

---
 README.md                       |  7 +++++++
 plugin.xml                      |  1 +
 src/android/BackgroundMode.java | 34 +++++++++++++++++++++++++++++++++
 www/background-mode.js          | 11 +++++++++++
 4 files changed, 53 insertions(+)

diff --git a/README.md b/README.md
index d1e7e09..e0da868 100644
--- a/README.md
+++ b/README.md
@@ -113,6 +113,13 @@ Override the back button on Android to go to background instead of closing the a
 cordova.plugins.backgroundMode.overrideBackButton();
 ```
 
+### Recent task list
+Exclude the app from the recent task list works on Android 5.0+.
+
+```javascript
+cordova.plugins.backgroundMode.excludeFromTaskList();
+```
+
 ### Notification
 To indicate that the app is executing tasks in background and being paused would disrupt the user, the plug-in has to create a notification while in background - like a download progress bar.
 
diff --git a/plugin.xml b/plugin.xml
index 77717e0..a3f81ba 100644
--- a/plugin.xml
+++ b/plugin.xml
@@ -102,6 +102,7 @@
             <preference name="windows-target-version" value="UAP" />
             <preference name="uap-target-min-version" value="10.0.14393.0" />
             <preference name="Windows.Universal-MinVersion" value="10.0.14393.0" />
+            <preference name="Windows.Universal" value="10.0.14393.0" />
         </config-file>
 
         <resource-file src="appbeep.wma" target="appbeep.wma" />
diff --git a/src/android/BackgroundMode.java b/src/android/BackgroundMode.java
index 653f915..350727c 100644
--- a/src/android/BackgroundMode.java
+++ b/src/android/BackgroundMode.java
@@ -22,10 +22,12 @@
 package de.appplant.cordova.plugin.background;
 
 import android.app.Activity;
+import android.app.ActivityManager;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.ServiceConnection;
+import android.os.Build;
 import android.os.IBinder;
 import android.view.View;
 
@@ -36,6 +38,7 @@ import org.json.JSONException;
 import org.json.JSONObject;
 
 import java.lang.reflect.Method;
+import java.util.List;
 
 public class BackgroundMode extends CordovaPlugin {
 
@@ -114,6 +117,10 @@ public class BackgroundMode extends CordovaPlugin {
             moveToForeground();
         }
 
+        if (action.equalsIgnoreCase("tasklist")) {
+            excludeFromTaskList();
+        }
+
         if (action.equalsIgnoreCase("enable")) {
             enableMode();
         }
@@ -333,6 +340,33 @@ public class BackgroundMode extends CordovaPlugin {
         thread.start();
     }
 
+    /**
+     * Exclude the app from the recent tasks list.
+     */
+    private void excludeFromTaskList() {
+        ActivityManager am = (ActivityManager) cordova.getActivity()
+                .getSystemService(Context.ACTIVITY_SERVICE);
+
+        if (am == null || Build.VERSION.SDK_INT < 21)
+            return;
+
+        try {
+            Method getAppTasks = am.getClass().getMethod("getAppTasks");
+            List tasks = (List) getAppTasks.invoke(am);
+
+            if (tasks == null || tasks.isEmpty())
+                return;
+
+            ActivityManager.AppTask task = (ActivityManager.AppTask) tasks.get(0);
+            Method setExcludeFromRecents = task.getClass()
+                    .getMethod("setExcludeFromRecents", boolean.class);
+
+            setExcludeFromRecents.invoke(task, true);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
     /**
      * Fire vent with some parameters inside the web view.
      *
diff --git a/www/background-mode.js b/www/background-mode.js
index edfa25c..a34d922 100644
--- a/www/background-mode.js
+++ b/www/background-mode.js
@@ -158,6 +158,17 @@ exports.moveToForeground = function () {
     }
 };
 
+/**
+ * Exclude the app from the recent tasks list (Android only).
+ *
+ * @return [ Void ]
+ */
+exports.excludeFromTaskList = function () {
+    if (this._isAndroid) {
+        cordova.exec(null, null, 'BackgroundMode', 'tasklist', []);
+    }
+};
+
 /**
  * Override the back button on Android to go to background
  * instead of closing the app.