android support! thanks to TachiWeb devs.

AndroidCompat/src/main/java/xyz/nulldev/androidcompat/res/BuildConfigCompat.java

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+package xyz.nulldev.androidcompat.res;
+
+import xyz.nulldev.androidcompat.info.ApplicationInfoImpl;
+import xyz.nulldev.androidcompat.util.KodeinGlobalHelper;
+
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+
+/**
+ * BuildConfig compat class.
+ */
+public class BuildConfigCompat {
+    private static ApplicationInfoImpl applicationInfo = KodeinGlobalHelper.instance(ApplicationInfoImpl.class);
+
+    public static final boolean DEBUG = applicationInfo.getDebug();
+
+    //We assume application ID = package name
+    public static final String APPLICATION_ID = applicationInfo.packageName;
+
+    //TODO Build time is hardcoded currently
+    public static final String BUILD_TIME;
+    static {
+        Calendar cal = Calendar.getInstance();
+        cal.set(2000, Calendar.JANUARY, 1);
+        BUILD_TIME = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm'Z'").format(cal.getTime());
+    }
+}

AndroidCompat/src/main/java/xyz/nulldev/androidcompat/res/DrawableResource.kt

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+package xyz.nulldev.androidcompat.res
+
+class DrawableResource(val location: String) : Resource {
+    override fun getType() = DrawableResource::class.java
+
+    override fun getValue() = javaClass.getResourceAsStream(location)
+}

AndroidCompat/src/main/java/xyz/nulldev/androidcompat/res/RCompat.java

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+/*
+ * Copyright 2016 Andy Bao
+ *
+ * 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 xyz.nulldev.androidcompat.res;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Custom implementation of R.java.
+ */
+public class RCompat {
+    //Resources stored in memory
+    private static Map<Integer, Resource> resources = new HashMap<>();
+    //The last used resource ID, used to generate new resource IDs
+    private static int lastRes = 0;
+
+    /**
+     * Add a new String resource.
+     * @param s The value of the String resource.
+     * @return The added String resource.
+     */
+    public static int sres(String s) {
+        return res(new StringResource(s));
+    }
+
+    public static int dres(String s) {
+        return res(new DrawableResource(s));
+    }
+
+    /**
+     * Add a resource.
+     * @param res The resource to add.
+     * @return The ID of the added resource.
+     */
+    public static int res(Resource res) {
+        int nextRes = lastRes++;
+        resources.put(nextRes, res);
+        return nextRes;
+    }
+
+    /**
+     * Get a string resource
+     * @param id The id of the resource
+     * @return The string resource
+     */
+    public static String getString(int id) {
+        return cast(resources.get(id), StringResource.class).getValue();
+    }
+
+    /**
+     * Convenience method for casting resources.
+     * @param resource The resource to cast
+     * @param output The class of the output resource type
+     * @param <T> The type of the output resource
+     * @return The casted resource
+     */
+    private static <T extends Resource> T cast(Resource resource, Class<T> output) {
+        if(resource.getType().equals(output)) {
+            return (T) resource;
+        } else {
+            throw new IllegalArgumentException("This resource is not of type: " + output.getSimpleName() + "!");
+        }
+    }
+}

AndroidCompat/src/main/java/xyz/nulldev/androidcompat/res/Resource.kt

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+/*
+ * Copyright 2016 Andy Bao
+ *
+ * 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 xyz.nulldev.androidcompat.res
+
+/**
+ * A static Android resource.
+ */
+
+interface Resource {
+    fun getType(): Class<out Resource>
+
+    fun getValue(): Any?
+}

AndroidCompat/src/main/java/xyz/nulldev/androidcompat/res/StringResource.kt

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+/*
+ * Copyright 2016 Andy Bao
+ *
+ * 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 xyz.nulldev.androidcompat.res
+
+/**
+ * String resource.
+ */
+class StringResource(val string: String) : Resource {
+    override fun getValue() = string
+
+    override fun getType() = StringResource::class.java
+}