From b6d051e226fdd9be7bad5f405e7c0a8dc7272932 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Mon, 22 May 2023 11:54:46 -0700
Subject: [PATCH] Fixed reporting backspace key if there is no text in the edit
buffer (thanks @312937!)
This workaround isn't necessary at API 30 and above.
Fixes https://github.com/libsdl-org/SDL/issues/7039
(cherry picked from commit c971795954bc85086cd20cfc71b45a311b7ba0d1)
---
.../src/main/java/org/libsdl/app/SDLActivity.java | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/android-project/app/src/main/java/org/libsdl/app/SDLActivity.java b/android-project/app/src/main/java/org/libsdl/app/SDLActivity.java
index e9d23d3dd275..24ba23b8ca21 100644
--- a/android-project/app/src/main/java/org/libsdl/app/SDLActivity.java
+++ b/android-project/app/src/main/java/org/libsdl/app/SDLActivity.java
@@ -2007,6 +2007,18 @@ public boolean setComposingText(CharSequence text, int newCursorPosition) {
@Override
public boolean deleteSurroundingText(int beforeLength, int afterLength) {
+ if (Build.VERSION.SDK_INT <= 29) {
+ // Workaround to capture backspace key. Ref: http://stackoverflow.com/questions>/14560344/android-backspace-in-webview-baseinputconnection
+ // and https://bugzilla.libsdl.org/show_bug.cgi?id=2265
+ if (beforeLength > 0 && afterLength == 0) {
+ // backspace(s)
+ while (beforeLength-- > 0) {
+ nativeGenerateScancodeForUnichar('\b');
+ }
+ return true;
+ }
+ }
+
if (!super.deleteSurroundingText(beforeLength, afterLength)) {
return false;
}