android: introduces the helper class

janbar · Aug 15, 2024 · 22a3e1a · 22a3e1a
1 parent 1ef9da1
commit 22a3e1a
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Showing 2 changed files with 28 additions and 6 deletions.
diff --git a/android/package-sources/src/io/github/janbar/osmin/QtAndroidHelper.java b/android/package-sources/src/io/github/janbar/osmin/QtAndroidHelper.java
@@ -0,0 +1,23 @@
+package io.github.janbar.osmin;
+
+import android.app.Activity;
+import android.content.Context;
+import android.util.Log;
+import android.view.Window;
+import android.view.WindowManager;
+
+public class QtAndroidHelper {
+
+    private static final String TAG = "helper";
+
+    public static void preventBlanking(Context context, boolean on) {
+        if (context instanceof Activity) {
+            Log.i(TAG, "FLAG_KEEP_SCREEN: " + (on ? "ON" : "OFF"));
+            Window window = ((Activity) context).getWindow();
+            if (on)
+                window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+            else
+                window.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+        }
+    }
+}
diff --git a/src/platformextras.cpp b/src/platformextras.cpp
@@ -149,12 +149,11 @@ void PlatformExtras::doPreventBlanking(bool on)
   {
     QtAndroid::runOnAndroidThread([on]
     {
-      static const int FLAG_KEEP_SCREEN_ON = QAndroidJniObject::getStaticField<jint>("android/view/WindowManager$LayoutParams", "FLAG_KEEP_SCREEN_ON");
-      auto window = QtAndroid::androidActivity().callObjectMethod("getWindow", "()Landroid/view/Window;");
-      if (on)
-        window.callMethod<void>("addFlags", "(I)V", FLAG_KEEP_SCREEN_ON);
-      else
-        window.callMethod<void>("clearFlags", "(I)V", FLAG_KEEP_SCREEN_ON);
+      QAndroidJniObject activity = QtAndroid::androidActivity();
+      QAndroidJniObject::callStaticMethod<void>("io/github/janbar/osmin/QtAndroidHelper",
+                                                "preventBlanking",
+                                                "(Landroid/content/Context;Z)V",
+                                                activity.object(), (on ? JNI_TRUE : JNI_FALSE));
     });
   }
 #elif defined(HAVE_DBUS)