Support Lib Preference framework

Change-Id: I4ada1206e0d7dab9cd39d19d195adef19feef49a
diff --git a/v7/preference/Android.mk b/v7/preference/Android.mk
new file mode 100644
index 0000000..b85dfce
--- /dev/null
+++ b/v7/preference/Android.mk
@@ -0,0 +1,48 @@
+# Copyright (C) 2015 The Android Open Source Project
+#
+# 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.
+
+LOCAL_PATH := $(call my-dir)
+
+# Build the resources using the current SDK version.
+# We do this here because the final static library must be compiled with an older
+# SDK version than the resources.  The resources library and the R class that it
+# contains will not be linked into the final static library.
+include $(CLEAR_VARS)
+LOCAL_MODULE := android-support-v7-preference-res
+LOCAL_SDK_VERSION := current
+LOCAL_SRC_FILES := $(call all-java-files-under, dummy)
+LOCAL_RESOURCE_DIR := \
+        frameworks/support/v7/appcompat/res \
+        $(LOCAL_PATH)/res
+LOCAL_AAPT_FLAGS := \
+	--auto-add-overlay
+LOCAL_JAR_EXCLUDE_FILES := none
+include $(BUILD_STATIC_JAVA_LIBRARY)
+
+# Here is the final static library that apps can link against.
+# The R class is automatically excluded from the generated library.
+# Applications that use this library must specify LOCAL_RESOURCE_DIR
+# in their makefiles to include the resources in their package.
+include $(CLEAR_VARS)
+LOCAL_MODULE := android-support-v7-preference
+LOCAL_SDK_VERSION := 7
+LOCAL_SRC_FILES := $(call all-java-files-under,src)
+# LOCAL_STATIC_JAVA_LIBRARIES :=
+LOCAL_JAVA_LIBRARIES := \
+        android-support-v4 \
+        android-support-v7-appcompat \
+        android-support-v7-recyclerview \
+        android-support-annotations \
+        android-support-v7-preference-res
+include $(BUILD_STATIC_JAVA_LIBRARY)