+ [android] new local module

android/sdk/src/main/java/com/taobao/weex/WXSDKEngine.java

@@ -89,6 +89,7 @@
 import com.taobao.weex.ui.component.list.WXCell;
 import com.taobao.weex.ui.component.list.WXListComponent;
 import com.taobao.weex.ui.component.list.template.WXRecyclerTemplateList;
+import com.taobao.weex.ui.module.WXLocalModule;
 import com.taobao.weex.ui.module.WXMetaModule;
 import com.taobao.weex.ui.module.WXModalUIModule;
 import com.taobao.weex.ui.module.WXTimerModule;
@@ -300,6 +301,7 @@ private static void register() {
       registerModule("picker", WXPickersModule.class);
       registerModule("meta", WXMetaModule.class,true);
       registerModule("webSocket", WebSocketModule.class);
+      registerModule("local", WXLocalModule.class);
 
 
       registerDomObject(simpleList, WXListDomObject.class);

android/sdk/src/main/java/com/taobao/weex/ui/module/WXLocalModule.java

@@ -0,0 +1,93 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package com.taobao.weex.ui.module;
+
+import android.content.Context;
+import android.content.res.Configuration;
+import android.content.res.Resources;
+import android.os.Build;
+import android.os.LocaleList;
+import android.text.TextUtils;
+
+import com.taobao.weex.WXEnvironment;
+import com.taobao.weex.annotation.JSMethod;
+import com.taobao.weex.bridge.JSCallback;
+import com.taobao.weex.common.WXModule;
+
+import java.util.Locale;
+
+/**
+ * Created by moxun on 2017/9/26.
+ *
+ * Ref: https://tools.ietf.org/html/bcp47
+ */
+
+public class WXLocalModule extends WXModule {
+
+  @JSMethod
+  public void getLanguage(JSCallback callback) {
+    callback.invoke(getLanguageTags());
+  }
+
+  @JSMethod
+  public void getLanguages(JSCallback callback) {
+    callback.invoke(getLanguageTags().split(","));
+  }
+
+  private String getLanguageTags() {
+    Context application = WXEnvironment.getApplication();
+    if (application != null) {
+      Resources res = application.getResources();
+      if (res != null) {
+        Configuration configuration = res.getConfiguration();
+        if (configuration != null) {
+          if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            LocaleList localeList = configuration.getLocales();
+            return localeList.toLanguageTags();
+          } else {
+            Locale local = configuration.locale;
+            if (local != null) {
+              return toLanguageTag(local);
+            }
+          }
+        }
+      }
+    }
+    return "";
+  }
+
+  private String toLanguageTag(Locale locale) {
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+      return locale.toLanguageTag();
+    } else {
+      StringBuilder sb = new StringBuilder();
+      String language = locale.getLanguage();
+      String script = locale.getScript();
+      String region = locale.getCountry();
+      sb.append(language);
+      if (!TextUtils.isEmpty(script)) {
+        sb.append("-").append(script);
+      }
+      if (!TextUtils.isEmpty(region)) {
+        sb.append("-").append(region);
+      }
+      return sb.toString();
+    }
+  }
+}