chore: Release v21.1.0-dev.4 [skip ci]

# [21.1.0-dev.4](https://github.com/ReVanced/revanced-patcher/compare/v21.1.0-dev.3...v21.1.0-dev.4) (2025-07-18)

### Bug Fixes

* Correctly save XML files in UTF-8 by using a bufferedWriter ([#356](https://github.com/ReVanced/revanced-patcher/issues/356)) ([33fadcb](33fadcbd0c))

CHANGELOG.md

@@ -1,3 +1,17 @@
+# [21.1.0-dev.4](https://github.com/ReVanced/revanced-patcher/compare/v21.1.0-dev.3...v21.1.0-dev.4) (2025-07-18)
+
+
+### Bug Fixes
+
+* Correctly save XML files in UTF-8 by using a bufferedWriter ([#356](https://github.com/ReVanced/revanced-patcher/issues/356)) ([33fadcb](https://github.com/ReVanced/revanced-patcher/commit/33fadcbd0c7076b848bdca4d62a9c684d5781232))
+
+# [21.1.0-dev.3](https://github.com/ReVanced/revanced-patcher/compare/v21.1.0-dev.2...v21.1.0-dev.3) (2025-06-20)
+
+
+### Bug Fixes
+
+* Encode XML files as UTF-8 to fix compilation of resources ([#339](https://github.com/ReVanced/revanced-patcher/issues/339)) ([4f2ef3c](https://github.com/ReVanced/revanced-patcher/commit/4f2ef3c47cea76a26c464cfb45d4bb57fe7198b5))
+
 # [21.1.0-dev.2](https://github.com/ReVanced/revanced-patcher/compare/v21.1.0-dev.1...v21.1.0-dev.2) (2025-06-20)
 
 

gradle.properties

@@ -1,3 +1,3 @@
 org.gradle.parallel = true
 org.gradle.caching = true
-version = 21.1.0-dev.2
+version = 21.1.0-dev.4

src/main/kotlin/app/revanced/patcher/util/Document.kt

@@ -5,6 +5,7 @@ import java.io.Closeable
 import java.io.File
 import java.io.InputStream
 import javax.xml.parsers.DocumentBuilderFactory
+import javax.xml.transform.OutputKeys
 import javax.xml.transform.TransformerFactory
 import javax.xml.transform.dom.DOMSource
 import javax.xml.transform.stream.StreamResult
@@ -34,15 +35,22 @@ class Document internal constructor(
                 readerCount.remove(it)
             }
 
-            it.outputStream().buffered().use { stream ->
-                TransformerFactory.newInstance()
-                    .newTransformer()
-                    .transform(DOMSource(this), StreamResult(stream))
+            val transformer = TransformerFactory.newInstance().newTransformer()
+            // Set to UTF-16 to prevent surrogate pairs from being escaped to invalid numeric character references, but save as UTF-8.
+            if (isAndroid) {
+                transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-16")
+                transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes")
+                it.bufferedWriter(charset = Charsets.UTF_8).use { writer ->
+                    transformer.transform(DOMSource(this), StreamResult(writer))
+                }
+            } else {
+                transformer.transform(DOMSource(this), StreamResult(it))
             }
         }
     }
 
     private companion object {
         private val readerCount = mutableMapOf<File, Int>()
+        private val isAndroid = System.getProperty("java.runtime.name") == "Android Runtime"
     }
 }