直接使用Configuration.setLayoutDirection，而不是每个Activity创建时通过View.setLayoutDirection设置布局方向

Author: Mr-JingShi

app/src/main/java/com/hjq/language/demo/MainActivity.java

@@ -7,6 +7,8 @@
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
+import android.text.TextUtils;
+import android.view.View;
 import android.webkit.WebChromeClient;
 import android.webkit.WebResourceRequest;
 import android.webkit.WebView;
@@ -199,9 +201,12 @@ public boolean shouldOverrideUrlLoading(WebView view, String url) {
         public void onPageStarted(WebView view, String url, Bitmap favicon) {
             super.onPageStarted(view, url, favicon);
 
-            if (LocaleContract.shouldRTL(MultiLanguages.getAppLanguage(view.getContext()))) {
-                // 水平滚动条滚动到最右边
-                view.scrollTo(view.getWidth(), 0);
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+                Locale locale = MultiLanguages.getAppLanguage(view.getContext());
+                if (View.LAYOUT_DIRECTION_RTL == TextUtils.getLayoutDirectionFromLocale(locale)) {
+                    // 水平滚动条滚动到最右边
+                    view.scrollTo(view.getWidth(), 0);
+                }
             }
         }
     }

library/src/main/java/com/hjq/language/ActivityLanguages.java

@@ -2,11 +2,7 @@
 
 import android.app.Activity;
 import android.app.Application;
-import android.os.Build;
 import android.os.Bundle;
-import android.view.View;
-
-import java.util.Locale;
 
 /**
  *    author : Android 轮子哥
@@ -34,13 +30,6 @@ public void onActivityPreCreated(Activity activity, Bundle savedInstanceState) {
     @Override
     public void onActivityCreated(Activity activity, Bundle savedInstanceState) {
         refreshActivityAndApplicationLanguage(activity);
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
-            Locale locale = MultiLanguages.getAppLanguage(activity);
-            if (LocaleContract.shouldRTL(locale)) {
-                View rootView = activity.findViewById(android.R.id.content);
-                rootView.setLayoutDirection(View.LAYOUT_DIRECTION_RTL);
-            }
-        }
     }
 
     @Override

library/src/main/java/com/hjq/language/LanguagesUtils.java

@@ -43,8 +43,10 @@ static void setLocale(Configuration config, Locale locale) {
             if (config.getLocales().get(0) != locale) {
                 config.locale = locale;
             }
+            config.setLayoutDirection(locale);
         } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
             config.setLocale(locale);
+            config.setLayoutDirection(locale);
         } else {
             config.locale = locale;
         }

library/src/main/java/com/hjq/language/LocaleContract.java

@@ -704,9 +704,4 @@ public static Locale getUzbekLocale() {
       }
       return sUzbekLocale;
    }
-
-   public static boolean shouldRTL(Locale locale) {
-      return LocaleContract.getArabicLocale().equals(locale)
-              || LocaleContract.getHebrewLocale().equals(locale);
-   }
 }

library/src/main/java/com/hjq/language/MultiLanguages.java

@@ -2,7 +2,9 @@
 
 import android.app.Application;
 import android.content.Context;
+import android.content.res.Configuration;
 import android.content.res.Resources;
+import android.os.Build;
 import android.os.Looper;
 import android.os.MessageQueue;
 import android.text.TextUtils;
@@ -96,7 +98,10 @@ public static void updateAppLanguage(Context context, Resources resources) {
             return;
         }
         Locale locale = getAppLanguage(context);
-        if (!locale.equals(LanguagesUtils.getLocale(resources.getConfiguration()))) {
+        Configuration config = resources.getConfiguration();
+        if (!locale.equals(LanguagesUtils.getLocale(config))
+            || (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1
+                && TextUtils.getLayoutDirectionFromLocale(locale) != config.getLayoutDirection())) {
             LanguagesUtils.updateLanguages(resources, locale);
         }
         if (!locale.equals(LanguagesUtils.getDefaultLocale())) {