From 57c19f477fddb542fa40747aeb7060fa9756756f Mon Sep 17 00:00:00 2001
From: Po Lu
Date: Mon, 20 Feb 2023 22:14:29 +0800
Subject: Update Android port

* INSTALL.android: Explain where to get tree-sitter.

* configure.ac: Add support for dynamic modules and tree-sitter.

* doc/emacs/android.texi (Android Windowing):
* java/org/gnu/emacs/EmacsSdk11Clipboard.java
(EmacsSdk11Clipboard, ownsClipboard): Improve clipboard handling
and documentation.
---
 java/org/gnu/emacs/EmacsSdk11Clipboard.java | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'java')

diff --git a/java/org/gnu/emacs/EmacsSdk11Clipboard.java b/java/org/gnu/emacs/EmacsSdk11Clipboard.java
index 2df2015c9c1..ea35a463299 100644
--- a/java/org/gnu/emacs/EmacsSdk11Clipboard.java
+++ b/java/org/gnu/emacs/EmacsSdk11Clipboard.java
@@ -25,6 +25,8 @@ import android.content.ClipData;
 
 import android.util.Log;
 
+import android.os.Build;
+
 import java.io.UnsupportedEncodingException;
 
 /* This class implements EmacsClipboard for Android 3.0 and later
@@ -43,7 +45,12 @@ public class EmacsSdk11Clipboard extends EmacsClipboard
   EmacsSdk11Clipboard ()
   {
     manager = EmacsService.SERVICE.getClipboardManager ();
-    manager.addPrimaryClipChangedListener (this);
+
+    /* The system forbids Emacs from reading clipboard data in the
+       background under Android 10 or later.  */
+
+    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q)
+      manager.addPrimaryClipChangedListener (this);
   }
 
   @Override
@@ -105,6 +112,9 @@ public class EmacsSdk11Clipboard extends EmacsClipboard
   public synchronized int
   ownsClipboard ()
   {
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q)
+      return -1;
+
     return ownsClipboard ? 1 : 0;
   }
 
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