expand the status bar on down fling gesture

app/src/main/AndroidManifest.xml

@@ -9,6 +9,7 @@
         tools:ignore="QueryAllPackagesPermission" />
 
     <uses-permission android:name="android.permission.REQUEST_DELETE_PACKAGES" />
+    <uses-permission android:name="android.permission.EXPAND_STATUS_BAR" />
 
     <uses-permission
         android:name="android.permission.USE_FINGERPRINT"

app/src/main/kotlin/com/simplemobiletools/launcher/activities/MainActivity.kt

@@ -324,7 +324,14 @@ class MainActivity : SimpleActivity(), FlingListener {
 
     override fun onFlingDown() {
         mIgnoreUpEvent = true
-        hideFragment(all_apps_fragment)
+        if (all_apps_fragment.y != mScreenHeight.toFloat()) {
+            hideFragment(all_apps_fragment)
+        } else {
+            try {
+                Class.forName("android.app.StatusBarManager").getMethod("expandNotificationsPanel").invoke(getSystemService("statusbar"))
+            } catch (e: Exception) {
+            }
+        }
     }
 
     @SuppressLint("WrongConstant")