app: [android] replace OnFocusChangedListener with onPause/onResume

References: https://lists.sr.ht/~eliasnaur/gio/%3CCAMAFT9Uyh_JWrkQQt+AmekJWFBqhZPsP_3ZxC1fUNB+=VGGorw@mail.gmail.com%3E
Signed-off-by: CoyAce <akeycoy@gmail.com>
Signed-off-by: Elias Naur <mail@eliasnaur.com>

app/GioActivity.java

@@ -48,6 +48,16 @@ public final class GioActivity extends Activity {
 		super.onStop();
 	}
 
+	@Override public void onPause() {
+        super.onPause();
+        view.pause();
+	}
+
+	@Override public void onResume() {
+        super.onResume();
+        view.resume();
+	}
+
 	@Override public void onConfigurationChanged(Configuration c) {
 		super.onConfigurationChanged(c);
 		view.configurationChanged();

app/GioView.java

@@ -62,7 +62,6 @@ public final class GioView extends SurfaceView implements Choreographer.FrameCal
 	private static boolean jniLoaded;
 
 	private final SurfaceHolder.Callback surfCallbacks;
-	private final View.OnFocusChangeListener focusCallback;
 	private final InputMethodManager imm;
 	private final float scrollXScale;
 	private final float scrollYScale;
@@ -114,12 +113,6 @@ public final class GioView extends SurfaceView implements Choreographer.FrameCal
 		nhandle = onCreateView(this);
 		setFocusable(true);
 		setFocusableInTouchMode(true);
-		focusCallback = new View.OnFocusChangeListener() {
-			@Override public void onFocusChange(View v, boolean focus) {
-				GioView.this.onFocusChange(nhandle, focus);
-			}
-		};
-		setOnFocusChangeListener(focusCallback);
 		surfCallbacks = new SurfaceHolder.Callback() {
 			@Override public void surfaceCreated(SurfaceHolder holder) {
 				// Ignore; surfaceChanged is guaranteed to be called immediately after this.
@@ -482,6 +475,18 @@ public final class GioView extends SurfaceView implements Choreographer.FrameCal
 		}
 	}
 
+	public void pause() {
+		if (nhandle != 0) {
+		    onFocusChange(nhandle, false);
+        }
+	}
+
+	public void resume() {
+		if (nhandle != 0) {
+		    onFocusChange(nhandle, true);
+        }
+	}
+
 	public void destroy() {
 		if (nhandle != 0) {
 			onDestroyView(nhandle);