From 5b7205b29912dc6c03a80a404af5b77d8eae4372 Mon Sep 17 00:00:00 2001
From: serso <se.solovyev@gmail.com>
Date: Thu, 10 Mar 2016 14:20:43 +0100
Subject: [PATCH] Don't lose cursor position on device rotation

---
 .../java/org/solovyev/android/calculator/EditorView.java    | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/org/solovyev/android/calculator/EditorView.java b/app/src/main/java/org/solovyev/android/calculator/EditorView.java
index 1e5a4400..685eabef 100644
--- a/app/src/main/java/org/solovyev/android/calculator/EditorView.java
+++ b/app/src/main/java/org/solovyev/android/calculator/EditorView.java
@@ -79,10 +79,14 @@ public class EditorView extends EditTextCompat {
         if (this.editor == editor) {
             return;
         }
-        this.editor = editor;
         if (editor != null) {
+            // avoid losing cursor position on focus restore. First request focus, then set cursor
+            // position. Consequent requestFocus() should be no-op
+            requestFocus();
             setState(editor.getState());
         }
+        // update editor at the end to avoid side-effects of #requestFocus() and #setState()
+        this.editor = editor;
     }
 
     @Override