[tinker] Bugfix:

    1. On Android 4.2 or newer, Resources in activity lost the configuration we update before it was
created.
    2. On Android N or newer, Resource patch lost its effects when rotate screen at any activity
with webview.

tinker-android/tinker-android-loader/src/main/java/com/tencent/tinker/loader/TinkerResourcePatcher.java

@@ -16,12 +16,16 @@
 
 package com.tencent.tinker.loader;
 
+import android.app.Instrumentation;
 import android.content.Context;
+import android.content.pm.ApplicationInfo;
 import android.content.res.AssetManager;
 import android.content.res.Resources;
+import android.os.Build;
 import android.util.ArrayMap;
 import android.util.Log;
 
+import com.tencent.tinker.loader.shareutil.ActivityResFixInstrumentation;
 import com.tencent.tinker.loader.shareutil.ShareConstants;
 import com.tencent.tinker.loader.shareutil.ShareReflectUtil;
 
@@ -50,6 +54,9 @@ class TinkerResourcePatcher {
     private static Field        packagesFiled            = null;
     private static Field        resourcePackagesFiled    = null;
 
+    private static Field        instrumentationField     = null;
+    private static Field        publicSourceDirField     = null;
+
     public static void isResourceCanPatch(Context context) throws Throwable {
         //   - Replace mResDir to point to the external resource file instead of the .apk. This is
         //     used as the asset path for new Resources objects.
@@ -165,6 +172,20 @@ public static void isResourceCanPatch(Context context) throws Throwable {
             resourcesImplFiled = Resources.class.getDeclaredField("mResourcesImpl");
             resourcesImplFiled.setAccessible(true);
         }
+
+        try {
+            instrumentationField = activityThread.getDeclaredField("mInstrumentation");
+            instrumentationField.setAccessible(true);
+        } catch (NoSuchFieldException e) {
+            throw new IllegalStateException("cannot find 'mInstrumentation' field");
+        }
+
+        try {
+            publicSourceDirField = ApplicationInfo.class.getDeclaredField("publicSourceDir");
+            publicSourceDirField.setAccessible(true);
+        } catch (NoSuchFieldException e) {
+            throw new IllegalStateException("cannot find 'mInstrumentation' field");
+        }
     }
 
     public static void monkeyPatchExistingResources(Context context, String externalResourceFile) throws Throwable {
@@ -219,6 +240,23 @@ public static void monkeyPatchExistingResources(Context context, String external
             }
         }
 
+        try {
+            final Instrumentation origInstrumentation = (Instrumentation) instrumentationField.get(currentActivityThread);
+            final Instrumentation activityResFixInstrumentation = new ActivityResFixInstrumentation(context, origInstrumentation);
+            instrumentationField.set(currentActivityThread, activityResFixInstrumentation);
+        } catch (NoSuchFieldException e) {
+            // Version below api 17 has no mResources field in ContextThemeWrapper,
+            // so just ignore this exception. Otherwise we should rethrow it.
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+                throw e;
+            }
+        }
+
+        // Handle issues caused by WebView on Android N.
+        // Issue: On Andorid N, if an activity contains a webview, when screen rotates
+        // our resource patch may lost effects.
+        publicSourceDirField.set(context.getApplicationInfo(), externalResourceFile);
+
         if (!checkResUpdate(context)) {
             throw new TinkerRuntimeException(ShareConstants.CHECK_RES_INSTALL_FAIL);
         }

tinker-android/tinker-android-loader/src/main/java/com/tencent/tinker/loader/shareutil/ActivityResFixInstrumentation.java

@@ -0,0 +1,70 @@
+/*
+ * Tencent is pleased to support the open source community by making Tinker available.
+ *
+ * Copyright (C) 2016 THL A29 Limited, a Tencent company. All rights reserved.
+ *
+ * Licensed under the BSD 3-Clause License (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ *
+ * https://opensource.org/licenses/BSD-3-Clause
+ *
+ * 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.tencent.tinker.loader.shareutil;
+
+import android.app.Activity;
+import android.app.Application;
+import android.app.Instrumentation;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ActivityInfo;
+import android.os.IBinder;
+import android.view.ContextThemeWrapper;
+
+import java.lang.reflect.Field;
+
+/**
+ * Created by tangyinsheng on 2017/1/6.
+ */
+
+public class ActivityResFixInstrumentation extends InstrumentationProxy {
+    private static Field mResourcesField = null;
+
+    private final Context mContext;
+
+    public ActivityResFixInstrumentation(Context context, Instrumentation base) throws NoSuchFieldException {
+        super(base);
+        this.mContext = context;
+        mResourcesField = ContextThemeWrapper.class.getDeclaredField("mResources");
+        mResourcesField.setAccessible(true);
+    }
+
+    @Override
+    public Activity newActivity(ClassLoader cl, String className, Intent intent) throws InstantiationException, IllegalAccessException, ClassNotFoundException {
+        final Activity result = super.newActivity(cl, className, intent);
+        replaceResources(result);
+        return result;
+    }
+
+    @Override
+    public Activity newActivity(Class<?> clazz, Context context, IBinder token, Application application, Intent intent, ActivityInfo info, CharSequence title, Activity parent, String id, Object lastNonConfigurationInstance) throws InstantiationException, IllegalAccessException {
+        final Activity result = super.newActivity(clazz, context, token, application, intent, info, title, parent, id, lastNonConfigurationInstance);
+        replaceResources(result);
+        return result;
+    }
+
+    private void replaceResources(ContextThemeWrapper component) {
+        if (component == null) {
+            return;
+        }
+        try {
+            mResourcesField.set(component, mContext.getApplicationContext().getResources());
+        } catch (IllegalAccessException e) {
+            new IllegalStateException("cannot access 'mResources' field of component " + component);
+        }
+    }
+}