src/xwalk/runtime/android/core/src/org/xwalk/core/XWalkInternalResources.java

   1 // Copyright (c) 2014 Intel Corporation. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 package org.xwalk.core;
   6
   7 import android.content.Context;
   8 import android.util.Log;
   9
  10 import java.lang.reflect.Field;
  11
  12 public class XWalkInternalResources {
  13     private static final String TAG = "XWalkInternalResources";
  14
  15     private static boolean loaded = false;
  16     private final static String INTERNAL_RESOURCE_CLASSES[] = {
  17         "org.chromium.content.R",
  18         "org.chromium.ui.R"
  19     };
  20     private final static String GENERATED_RESOURCE_CLASS = "org.xwalk.core.R";
  21
  22     // Doing org.chromium.content.R.<class>.<name> = org.xwalk.core.R.<class>.<name>
  23     // Use reflection to iterate over the target class is to avoid hardcode.
  24     private static void doResetIds(Context context) {
  25         ClassLoader classLoader = context.getClassLoader();
  26         for (String resourceClass : INTERNAL_RESOURCE_CLASSES) {
  27             try {
  28                 Class<?> internalResource = classLoader.loadClass(resourceClass);
  29                 Class<?>[] innerClazzs = internalResource.getClasses();
  30                 for (Class<?> innerClazz : innerClazzs) {
  31                     Class<?> generatedInnerClazz;
  32                     String generatedInnerClassName = innerClazz.getName().replace(
  33                             resourceClass, GENERATED_RESOURCE_CLASS);
  34                     try {
  35                         generatedInnerClazz = classLoader.loadClass(generatedInnerClassName);
  36                     } catch (ClassNotFoundException e) {
  37                         Log.w(TAG, generatedInnerClassName + "is not found.");
  38                         continue;
  39                     }
  40                     Field[] fields = innerClazz.getFields();
  41                     for (Field field : fields) {
  42                         // It's final means we are probably not used as library project.
  43                         if (!field.isAccessible()) continue;
  44                         try {
  45                             int value = generatedInnerClazz.getField(field.getName()).getInt(null);
  46                             field.setInt(null, value);
  47                         } catch (IllegalAccessException e) {
  48                             Log.w(TAG, generatedInnerClazz.getName() + "." +
  49                                     field.getName() + " is not accessable.");
  50                         } catch (IllegalArgumentException e) {
  51                             Log.w(TAG, generatedInnerClazz.getName() + "." +
  52                                     field.getName() + " is not int.");
  53                         } catch (NoSuchFieldException e) {
  54                             Log.w(TAG, generatedInnerClazz.getName() + "." +
  55                                     field.getName() + " is not found.");
  56                         }
  57                     }
  58                 }
  59             } catch (ClassNotFoundException e) {
  60                 Log.w(TAG, resourceClass + "is not found.");
  61             }
  62         }
  63     }
  64
  65     static void resetIds(Context context) {
  66         if (!loaded) {
  67             doResetIds(context);
  68             loaded = true;
  69         }
  70     }
  71 }