【Android】Get User Locale through JNI

skylersaleh · Aug 3, 2023 · 9ae3065 · 9ae3065
1 parent 3267ff5
commit 9ae3065
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Showing 3 changed files with 51 additions and 3 deletions.
diff --git a/src/localization.c b/src/localization.c
@@ -1774,6 +1774,9 @@ const char* se_language_string(int language_enum){
     }
     return "";
 }
+#ifdef PLATFORM_ANDROID
+extern void se_android_get_language(char* language_buffer, size_t buffer_size);
+#endif
 int se_get_default_language(){
     static int default_lang = SE_LANG_DEFAULT;
     if(default_lang==SE_LANG_DEFAULT){
@@ -1783,11 +1786,20 @@ int se_get_default_language(){
             char lang_buffer[128];
             CFArrayRef langs = CFLocaleCopyPreferredLanguages();
             CFStringRef lang_code = CFArrayGetValueAtIndex(langs, 0);
-            CFStringGetCString(lang_code, lang_buffer, 128, kCFStringEncodingUTF8);        
+            CFStringGetCString(lang_code, lang_buffer, 128, kCFStringEncodingUTF8);
             default_lang = se_convert_locale_to_enum(lang_buffer);
             if(default_lang != SE_LANG_DEFAULT) printf("Detected CF locale language: %s (enum: %s)\n", lang_buffer ,se_language_string(default_lang));
         }
-        #endif 
+        #endif
+#ifdef PLATFORM_ANDROID
+        // Try to get from JNI
+        if(default_lang == SE_LANG_DEFAULT){
+            char lang_buffer[128];
+            se_android_get_language(lang_buffer,sizeof(lang_buffer));
+            default_lang = se_convert_locale_to_enum(lang_buffer);
+            if(default_lang != SE_LANG_DEFAULT) printf("Detected language from JNI: %s (enum: %s)\n", lang_buffer ,se_language_string(default_lang));
+        }
+#endif
         // Try to get from environment
         if(default_lang == SE_LANG_DEFAULT){
             char* clocale = getenv("LANG");

diff --git a/src/main.c b/src/main.c
@@ -2856,6 +2856,15 @@ bool se_selectable_with_box(const char * first_label, const char* second_label,
   return clicked; 
 }
 #ifdef PLATFORM_ANDROID
+#include <android/log.h>
+
+#define TAG "SkyEmu"
+
+#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR,    TAG, __VA_ARGS__)
+#define LOGW(...) __android_log_print(ANDROID_LOG_WARN,     TAG, __VA_ARGS__)
+#define LOGI(...) __android_log_print(ANDROID_LOG_INFO,     TAG, __VA_ARGS__)
+#define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG,    TAG, __VA_ARGS__)
+
 void se_android_open_file_picker(){
   ANativeActivity* activity =(ANativeActivity*)sapp_android_get_native_activity();
   // Attaches the current thread to the JVM.
@@ -2895,6 +2904,30 @@ void se_android_get_visible_rect(float * top, float * bottom){
     (*pJavaVM)->DetachCurrentThread(pJavaVM);
   }
 }
+void se_android_get_language(char* language_buffer, size_t buffer_size){
+
+  ANativeActivity* activity =(ANativeActivity*)sapp_android_get_native_activity();
+  // Attaches the current thread to the JVM.
+  JavaVM *pJavaVM = activity->vm;
+  JNIEnv *pJNIEnv = activity->env;
+
+  jint nResult = (*pJavaVM)->AttachCurrentThread(pJavaVM, &pJNIEnv, NULL );
+  if ( nResult != JNI_ERR ){
+    // Retrieves NativeActivity.
+    jobject nativeActivity = activity->clazz;
+    jclass ClassNativeActivity = (*pJNIEnv)->GetObjectClass(pJNIEnv, nativeActivity );
+    jmethodID getLanguageMethod= (*pJNIEnv)->GetMethodID(pJNIEnv, ClassNativeActivity, "getLanguage", "()Ljava/lang/String;" );
+    if(getLanguageMethod) {
+        jstring joStringPropVal = (jstring) (*pJNIEnv)->CallStaticObjectMethod(pJNIEnv,ClassNativeActivity,getLanguageMethod);
+        const jchar *jcVal = (*pJNIEnv)->GetStringUTFChars(pJNIEnv, joStringPropVal, JNI_FALSE);
+        LOGD("Android Language is %s", jcVal);
+        strncpy(language_buffer, jcVal, buffer_size);
+        (*pJNIEnv)->ReleaseStringChars(pJNIEnv, joStringPropVal, jcVal);
+    }else LOGE("Failed to find getLanguage() method in JNIEnv");
+    // Finished with the JVM.
+    (*pJavaVM)->DetachCurrentThread(pJavaVM);
+  }
+}
 void se_android_set_keyboard_visible(bool visible){
   static bool last_visible = false;
   if(visible!=last_visible){

diff --git a/tools/android_project/app/src/main/java/com/sky/SkyEmu/EnhancedNativeActivity.java b/tools/android_project/app/src/main/java/com/sky/SkyEmu/EnhancedNativeActivity.java
@@ -25,6 +25,7 @@
 import android.widget.FrameLayout;
 
 import java.io.File;
+import java.util.Locale;
 import java.util.Vector;
 
 public class EnhancedNativeActivity extends NativeActivity {
@@ -41,7 +42,9 @@ public void requestPermissions() {
                 startActivityForResult(intent, APP_STORAGE_ACCESS_REQUEST_CODE);
             }
         }
-
+    }
+    public String getLanguage() {
+        return Locale.getDefault().toString();
     }
     /*Handle permission request results*/
     @Override