From 6c5759d5b38fb6f4072f3a470e253eda5c119bcb Mon Sep 17 00:00:00 2001
From: tomikun <60690056+alexytomi@users.noreply.github.com>
Date: Thu, 30 Jul 2026 19:02:11 +0800
Subject: [PATCH 1/2] feat: Set env var for Dalvik JavaVM*

For use primarily by mods who want to access android on a deeper level
---
 .../src/main/java/net/kdt/pojavlaunch/Tools.java       |  1 +
 .../main/java/net/kdt/pojavlaunch/utils/JREUtils.java  |  2 ++
 app_pojavlauncher/src/main/jni/utils.c                 | 10 ++++++++++
 3 files changed, 13 insertions(+)

diff --git a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/Tools.java b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/Tools.java
index dbec8e093..1febf5244 100644
--- a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/Tools.java
+++ b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/Tools.java
@@ -1943,4 +1943,5 @@ public final class Tools {
          */
         public static native void initializeControllerSubsystems();
     }
+    public static native long getJavaVMPointer();
 }
diff --git a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/utils/JREUtils.java b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/utils/JREUtils.java
index 3e6e3dbeb..cfdbfaece 100644
--- a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/utils/JREUtils.java
+++ b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/utils/JREUtils.java
@@ -267,6 +267,8 @@ public class JREUtils {
             envMap.put("POJAV_LOAD_TURNIP", "1");
         }
 
+        envMap.put("DALVIK_JAVAVM", String.valueOf(Tools.getJavaVMPointer()));
+
         readCustomEnv(envMap); // Must be last so it overrides anything the user sets for obvious reasons.
 
         for (Map.Entry<String, String> env : envMap.entrySet()) {
diff --git a/app_pojavlauncher/src/main/jni/utils.c b/app_pojavlauncher/src/main/jni/utils.c
index 873ef3b63..f9aedf9ac 100644
--- a/app_pojavlauncher/src/main/jni/utils.c
+++ b/app_pojavlauncher/src/main/jni/utils.c
@@ -200,3 +200,13 @@ JNIEXPORT jint JNICALL Java_net_kdt_pojavlaunch_utils_JREUtils_executeForkedBina
 }
 */
 
+
+JNIEXPORT jlong JNICALL
+Java_net_kdt_pojavlaunch_Tools_getJavaVMPointer(JNIEnv *env, jclass clazz) {
+	JavaVM *vm;
+	if ((*env)->GetJavaVM(env, &vm) != JNI_OK) {
+		return -1;
+	}
+
+	return (jlong)(uintptr_t)vm;
+}
\ No newline at end of file

From 32d8b69d640594303c5ebf3b9b01c0f0de3b6429 Mon Sep 17 00:00:00 2001
From: tomikun <60690056+alexytomi@users.noreply.github.com>
Date: Sun, 2 Aug 2026 20:33:59 +0800
Subject: [PATCH 2/2] feat: Set env var for Application jobject

For use by mods who need to load their own classes or something
---
 .../main/java/net/kdt/pojavlaunch/Tools.java    |  1 +
 .../net/kdt/pojavlaunch/utils/JREUtils.java     |  1 +
 app_pojavlauncher/src/main/jni/utils.c          | 17 +++++++++++++++++
 3 files changed, 19 insertions(+)

diff --git a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/Tools.java b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/Tools.java
index 1febf5244..438a6ccd8 100644
--- a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/Tools.java
+++ b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/Tools.java
@@ -1943,5 +1943,6 @@ public final class Tools {
          */
         public static native void initializeControllerSubsystems();
     }
+    public static native String jObjectToString(Object object);
     public static native long getJavaVMPointer();
 }
diff --git a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/utils/JREUtils.java b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/utils/JREUtils.java
index cfdbfaece..d7be8905b 100644
--- a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/utils/JREUtils.java
+++ b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/utils/JREUtils.java
@@ -267,6 +267,7 @@ public class JREUtils {
             envMap.put("POJAV_LOAD_TURNIP", "1");
         }
 
+        envMap.put("DALVIK_APPLICATION", Tools.jObjectToString(activity.getApplication()));
         envMap.put("DALVIK_JAVAVM", String.valueOf(Tools.getJavaVMPointer()));
 
         readCustomEnv(envMap); // Must be last so it overrides anything the user sets for obvious reasons.
diff --git a/app_pojavlauncher/src/main/jni/utils.c b/app_pojavlauncher/src/main/jni/utils.c
index f9aedf9ac..aaf03e6d6 100644
--- a/app_pojavlauncher/src/main/jni/utils.c
+++ b/app_pojavlauncher/src/main/jni/utils.c
@@ -200,6 +200,23 @@ JNIEXPORT jint JNICALL Java_net_kdt_pojavlaunch_utils_JREUtils_executeForkedBina
 }
 */
 
+// WARNING: This does not release the global ref, this can be a memory leak
+JNIEXPORT jstring JNICALL
+Java_net_kdt_pojavlaunch_Tools_jObjectToString(JNIEnv *env, jclass clazz, jobject object) {
+    if (object == NULL) {
+        return NULL;
+    }
+
+    jobject globalRef = (*env)->NewGlobalRef(env, object);
+    if (globalRef == NULL) {
+        return NULL;
+    }
+
+    char buf[32];
+    snprintf(buf, sizeof(buf), "%p", globalRef);
+
+    return (*env)->NewStringUTF(env, buf);
+}
 
 JNIEXPORT jlong JNICALL
 Java_net_kdt_pojavlaunch_Tools_getJavaVMPointer(JNIEnv *env, jclass clazz) {