Mono: Android build and shared libraries fixes

Fix location of Mono's shared libraries.
Fix build failing if the directory 'platform/android/java/libs/{target}/{abi}' doesn't exist.

1 files changed, 68 insertions, 0 deletions

diff --git a/modules/mono/utils/android_utils.cpp b/modules/mono/utils/android_utils.cpp
new file mode 100644
index 0000000000..7dd67e3b8e
--- /dev/null
+++ b/modules/mono/utils/android_utils.cpp
@@ -0,0 +1,68 @@
+/*************************************************************************/
+/*  android_utils.cpp                                                    */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "android_utils.h"
+
+#ifdef __ANDROID__
+
+#include "platform/android/thread_jandroid.h"
+
+namespace GDMonoUtils {
+namespace Android {
+
+String get_app_native_lib_dir() {
+	JNIEnv *env = ThreadAndroid::get_env();
+
+	jclass activityThreadClass = env->FindClass("android/app/ActivityThread");
+	jmethodID currentActivityThread = env->GetStaticMethodID(activityThreadClass, "currentActivityThread", "()Landroid/app/ActivityThread;");
+	jobject activityThread = env->CallStaticObjectMethod(activityThreadClass, currentActivityThread);
+	jmethodID getApplication = env->GetMethodID(activityThreadClass, "getApplication", "()Landroid/app/Application;");
+	jobject ctx = env->CallObjectMethod(activityThread, getApplication);
+
+	jmethodID getApplicationInfo = env->GetMethodID(env->GetObjectClass(ctx), "getApplicationInfo", "()Landroid/content/pm/ApplicationInfo;");
+	jobject applicationInfo = env->CallObjectMethod(ctx, getApplicationInfo);
+	jfieldID nativeLibraryDirField = env->GetFieldID(env->GetObjectClass(applicationInfo), "nativeLibraryDir", "Ljava/lang/String;");
+	jstring nativeLibraryDir = (jstring)env->GetObjectField(applicationInfo, nativeLibraryDirField);
+
+	String result;
+
+	const char *const nativeLibraryDir_utf8 = env->GetStringUTFChars(nativeLibraryDir, NULL);
+	if (nativeLibraryDir_utf8) {
+		result.parse_utf8(nativeLibraryDir_utf8);
+		env->ReleaseStringUTFChars(nativeLibraryDir, nativeLibraryDir_utf8);
+	}
+
+	return result;
+}
+
+} // namespace Android
+} // namespace GDMonoUtils
+
+#endif // __ANDROID__