SupportLeanbackShowcase: add Android.mk

Workaround two problems:

Bug 28138876: gradle build resource id crash after the AAPT2 change
in support library.

Bug 28672886: N preview emulator is too slow, built with prebuilt
to install on 23 emulator.

Change-Id: I810ab659af030d49ee503f4b28ad4bf7a34c4097

samples/SupportLeanbackShowcase/app/src/main/Android.mk

@@ -0,0 +1,63 @@
+# Copyright (C) 2014 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)
+
+#LOCAL_JACK_FLAGS := -D jack.import.jar.debug-info=false
+
+# Build the samples.
+# We need to add some special AAPT flags to generate R classes
+# for resources that are included from the libraries.
+include $(CLEAR_VARS)
+LOCAL_PACKAGE_NAME := SupportLeanbackShowcase
+LOCAL_MODULE_TAGS := samples tests
+LOCAL_SDK_VERSION := current
+LOCAL_MIN_SDK_VERSION := 17
+LOCAL_SRC_FILES := $(call all-java-files-under, java)
+LOCAL_STATIC_JAVA_LIBRARIES := \
+        android-support-v4 \
+        android-support-v7-recyclerview \
+        android-support-v7-preference \
+        android-support-v7-appcompat \
+        android-support-v14-preference \
+        android-support-v17-preference-leanback \
+        android-support-v17-leanback \
+	gson-x \
+	picasso-x
+LOCAL_RESOURCE_DIR = \
+        $(LOCAL_PATH)/res \
+        frameworks/support/v17/preference-leanback/res \
+        frameworks/support/v7/preference/res \
+        frameworks/support/v7/appcompat/res \
+        frameworks/support/v14/preference/res \
+        frameworks/support/v17/leanback/res \
+        frameworks/support/v7/recyclerview/res
+LOCAL_AAPT_FLAGS := \
+        --auto-add-overlay \
+        --extra-packages android.support.v17.leanback \
+        --extra-packages android.support.v17.preference \
+        --extra-packages android.support.v7.preference \
+        --extra-packages android.support.v14.preference \
+        --extra-packages android.support.v7.appcompat \
+        --extra-packages android.support.v7.recyclerview
+include $(BUILD_PACKAGE)
+
+
+include $(CLEAR_VARS)
+
+LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES := \
+	gson-x:../../../libs/gson-1.7.2.jar \
+	picasso-x:../../../libs/picasso-2.5.2.jar \
+
+include $(BUILD_MULTI_PREBUILT)

samples/SupportLeanbackShowcase/app/src/main/AndroidManifest.xml

@@ -2,6 +2,7 @@
     package="android.support.v17.leanback.supportleanbackshowcase"
     xmlns:android="http://schemas.android.com/apk/res/android">
 
+    <uses-sdk android:minSdkVersion="17" android:targetSdkVersion="23" />
     <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.RECORD_AUDIO"/>