Fix language switch on old androids

app/src/main/java/com/hippo/content/ContextLocalWrapper.java

@@ -1,59 +0,0 @@
-/*
- * Copyright 2018 Hippo Seven
- *
- * Licensed 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.hippo.content;
-
-/*
- * Created by Hippo on 2018/3/27.
- */
-
-import android.content.Context;
-import android.content.ContextWrapper;
-import android.content.res.Configuration;
-import android.content.res.Resources;
-import android.os.Build;
-import android.os.LocaleList;
-
-import java.util.Locale;
-
-public class ContextLocalWrapper extends ContextWrapper {
-
-    public ContextLocalWrapper(Context base) {
-        super(base);
-    }
-
-    public static ContextLocalWrapper wrap(Context context, Locale newLocale) {
-        Resources res = context.getResources();
-        Configuration configuration = res.getConfiguration();
-
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
-            configuration.setLocale(newLocale);
-
-            LocaleList localeList = new LocaleList(newLocale);
-            LocaleList.setDefault(localeList);
-            configuration.setLocales(localeList);
-
-            context = context.createConfigurationContext(configuration);
-
-        } else {
-            configuration.setLocale(newLocale);
-            context = context.createConfigurationContext(configuration);
-
-        }
-
-        return new ContextLocalWrapper(context);
-    }
-}

app/src/main/java/com/hippo/ehviewer/ui/EhActivity.java

@@ -27,7 +27,6 @@ import androidx.annotation.Nullable;
 import androidx.annotation.StyleRes;
 import androidx.appcompat.app.AppCompatActivity;
 
-import com.hippo.content.ContextLocalWrapper;
 import com.hippo.ehviewer.EhApplication;
 import com.hippo.ehviewer.R;
 import com.hippo.ehviewer.Settings;
@@ -118,6 +117,26 @@ public abstract class EhActivity extends AppCompatActivity {
 
     @Override
     protected void attachBaseContext(Context newBase) {
+        super.attachBaseContext(newBase);
+        applyOverrideConfiguration(new Configuration());
+    }
+
+    @Override
+    public void applyOverrideConfiguration(Configuration newConfig) {
+        super.applyOverrideConfiguration(updateConfigurationIfSupported(newConfig));
+    }
+
+    private Configuration updateConfigurationIfSupported(Configuration config) {
+        // Configuration.getLocales is added after 24 and Configuration.locale is deprecated in 24
+        if (Build.VERSION.SDK_INT >= 24) {
+            if (!config.getLocales().isEmpty()) {
+                return config;
+            }
+        } else {
+            if (config.locale != null) {
+                return config;
+            }
+        }
         Locale locale = null;
         String language = Settings.getAppLanguage();
         if (language != null && !language.equals("system")) {
@@ -134,9 +153,9 @@ public abstract class EhActivity extends AppCompatActivity {
             Configuration configuration = res.getConfiguration();
             locale = Build.VERSION.SDK_INT >= Build.VERSION_CODES.N ? configuration.getLocales().get(0) : configuration.locale;
         }
-
-        newBase = ContextLocalWrapper.wrap(newBase, locale);
-
-        super.attachBaseContext(newBase);
+        if (locale != null) {
+            config.setLocale(locale);
+        }
+        return config;
     }
 }