migrate android build to gradle

move preparation tasks (creating assets/processing files) from the
makefile into the gradle script

This allows much easier integration into android-studio (just open
android/source with android studio after running make to compile the
native library)

Change-Id: I9a9d6832797c24a7e195a1c7954cd6d20f5a8496

24 files changed, 599 insertions, 657 deletions

diff --git a/android/.gitignore b/android/.gitignore
index 0f7e91bcc642..048756239172 100644
--- a/android/.gitignore
+++ b/android/.gitignore
@@ -1,8 +1,14 @@
-assets
-bin
-gen
-libs
-obj
-local.properties
-native-code.cxx
-AppCompat-v7
+/source/.gradle/
+/source/.idea/
+/source/assets/
+/source/assets_fullUI/
+/source/assets_strippedUI/
+/source/build/
+/source/captures/
+/source/jniLibs/
+/source/jniLibs_debug/
+/source/liboSettings.gradle
+/source/local.properties
+/source/native-code.cxx
+/source/obj/
+/source/source.iml
diff --git a/android/Bootstrap/.gitignore b/android/Bootstrap/.gitignore
deleted file mode 100644
index ad825c08edc3..000000000000
--- a/android/Bootstrap/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-no-resource-compress.xml
diff --git a/android/Bootstrap/AndroidManifest.xml b/android/Bootstrap/AndroidManifest.xml
deleted file mode 100644
index b602c871dc58..000000000000
--- a/android/Bootstrap/AndroidManifest.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-      package="org.libreoffice.kit"
-      android:versionCode="1"
-      android:versionName="1.0">
-    <application>
-        <activity android:name="org.libreoffice.kit.LibreOfficeKit" />
-    </application>
-</manifest>
diff --git a/android/Bootstrap/Makefile.shared b/android/Bootstrap/Makefile.shared
index 01fc8ec2357e..bfac36e958c7 100644
--- a/android/Bootstrap/Makefile.shared
+++ b/android/Bootstrap/Makefile.shared
@@ -13,71 +13,16 @@
 # (and iOS), etc. We don't really win anything by having so many layers of
 # configurability on platforms like Android and iOS where apps based on LO
 # code are very much self-contained pre-packaged thingies.
-APP_DATA_PATH=/data/data/$(APP_PACKAGE)
 
-SODEST=libs/$(ANDROID_APP_ABI)
+SODEST=jniLibs/$(ANDROID_APP_ABI)
 OBJLOCAL=obj/local/$(ANDROID_APP_ABI)
 
-APPCOMPATDIR=$(BOOTSTRAPDIR)/../AppCompat-v7
-
-define COPYSO
-       $(error COPYSO should not be used now with DISABLE_DYNLOADING)
-endef
-
-define COPYJAR
-mkdir -p libs && cp $(1) libs
-endef
-
 #
 # Helpful rules ...
 #
 
-#
-# The Android SDK recommends you copy/paste some big -package-resources
-# rule in order to not pack certain kinds of resources. Unfortunately this
-# rule interacts with the rest of the ant code in horrible ways such that
-# upgrading your SDK auto-breaks everything.
-#
-# Horrors below:
-#
-$(BOOTSTRAPDIR)/no-resource-compress.xml : $(ANDROID_SDK_HOME)/tools/ant/build.xml $(BOOTSTRAPDIR)/no-resource-compress-*.xml
-	( \
-	android_sdk_ver=`grep 'Pkg.Revision' $(ANDROID_SDK_HOME)/tools/source.properties | sed 's/^.*=//' | sed 's/\..*//'` ; \
-	sed 's/@ANDROID_PACKAGE_NAME@/$(ANDROID_PACKAGE_NAME)/' < $(BOOTSTRAPDIR)/no-resource-compress-$$android_sdk_ver.xml > $@ ; \
-	if ! test -f $(BOOTSTRAPDIR)/no-resource-compress.xml; then \
-	   echo "Unknown Android SDK version: $$android_sdk_ver"; \
-	   exit 1; \
-	fi \
-	)
-
-android_version_setup : $(BOOTSTRAPDIR)/no-resource-compress.xml
-
-prepare-appcompat:
-	mkdir $(APPCOMPATDIR) 2>/dev/null; true
-	cp -rf $(ANDROID_SDK_HOME)/extras/android/support/v7/appcompat/* $(APPCOMPATDIR)
-	$(ANDROID_SDK_HOME)/tools/android update lib-project --target android-23 --path $(APPCOMPATDIR)
-
-properties:
+local.properties:
 	echo sdk.dir=$(ANDROID_SDK_HOME) >local.properties
-	echo sdk.dir=$(ANDROID_SDK_HOME) >../Bootstrap/local.properties
-	echo "# File needed by ndk-gdb" >jni/Application.mk
-	echo "APP_ABI := $(ANDROID_APP_ABI)" > jni/Application.mk
-	echo "APP_PLATFORM := android-21" >> jni/Application.mk
-
-install:
-	unset JAVA_HOME && $(ANT) debug install
-	@echo
-	@echo 'Run it with "make run"'
-	@echo
-
-uninstall:
-	$(ANDROID_SDK_HOME)/platform-tools/adb uninstall $(APP_PACKAGE)
-
-clean: android_version_setup properties
-	$(ANT) $(if $(verbose),,-quiet) -keep-going clean
-	rm -rf assets libs $(SODEST) $(OBJLOCAL) $(BOOTSTRAPDIR)/no-resource-compress.xml
-	rm -f native-code.cxx
-	rm -rf $(APPCOMPATDIR)
 
 #
 # Build / link the single .so for this app
@@ -107,8 +52,6 @@ $(SODEST)/liblo-native-code.so : $(OBJLOCAL)/liblo-native-code.so
 	$(STRIP) -o $(SODEST)/liblo-native-code.so $(OBJLOCAL)/liblo-native-code.so
 	#to keep some symbols, eg.: $(STRIP) -o $(SODEST)/liblo-native-code.so $(OBJLOCAL)/liblo-native-code.so -w -K 'Java*'
 
-# shrinkme $(STRIP) -o $(SODEST)/liblo-native-code.so $(OBJLOCAL)/liblo-native-code.so
-
 link-so: $(SODEST)/liblo-native-code.so
 
 # If you reinstall an app several times *on the emulator*, even if you
@@ -119,109 +62,30 @@ link-so: $(SODEST)/liblo-native-code.so
 stop-start-cycle:
 	$(ANDROID_SDK_HOME)/platform-tools/adb shell stop && $(ANDROID_SDK_HOME)/platform-tools/adb shell start && sleep 10
 
-copy-stuff:
-# Then "assets". Let the directory structure under assets mimic
-# that under solver for now.
-#
-# Please note that I have no idea what all of this is really necessary and for
-# much of this stuff being copied, no idea whether it makes any sense at all.
-# Much of this is copy-pasted from android/qa/sc/Makefile (where a couple of
-# unit tests for sc are built, and those do seem to mostly work) and
-# android/qa/desktop/Makefile (mmeeks's desktop demo, also works to some
-# extent).
-#
-	mkdir -p assets/lib assets/program/services assets/gz.unpack/program
-	gzip -9 <$(INSTDIR)/$(LIBO_ETC_FOLDER)/types/offapi.rdb >assets/gz.unpack/program/offapi.rdb
-	gzip -9 <$(INSTDIR)/$(LIBO_ETC_FOLDER)/types/oovbaapi.rdb >assets/gz.unpack/program/oovbaapi.rdb
-	gzip -9 <$(INSTDIR)/$(LIBO_URE_MISC_FOLDER)/types.rdb >assets/gz.unpack/program/udkapi.rdb
-# For some reason the vnd.sun.star.expand:$LO_LIB_DIR doesn't seem to work, it expands to empty!?
-	for F in program/services/services program/services; do \
-		sed -e 's!uri="vnd.sun.star.expand:$$LO_LIB_DIR/!uri="file://$$APP_DATA_DIR/lib/!g' <$(INSTDIR)/$$F.rdb >assets/$$F.rdb; \
-	done
-	cp $(if $(exampleDocument),$(exampleDocument),$(SRC_ROOT)/android/default-document/example.odt) assets/example.odt
-	cp $(SRC_ROOT)/readlicense_oo/license/LICENSE assets/license.txt
-	cp $(SRC_ROOT)/readlicense_oo/license/NOTICE assets/notice.txt
-#
-	rm -Rf assets/share # pre-clean it
-	mkdir -p assets/share/config
-	cp -R $(INSTDIR)/share/registry assets/share
-# Filter data is needed by e.g. the drawingML preset shape import.
-	cp -R $(INSTDIR)/share/filter assets/share
-# Make sure the soffice.cfg directory is always created, it's not possible to hit any keys without it.
-	if ! test z$(DISABLE_UI) = zTRUE; then \
-		echo "Copying UI files into the apk"; \
-		cp -R $(INSTDIR)/share/config/soffice.cfg assets/share/config; \
-	else \
-		echo "Skipping UI files"; \
-		mkdir -p assets/share/config/soffice.cfg; \
-		echo > assets/share/config/soffice.cfg/empty; \
-		for F in main.xcd res/registry_en-US.xcd; do \
-			$(SRC_ROOT)/android/mobile-config.py assets/share/registry/$$F assets/share/registry/$$F.new && mv assets/share/registry/$$F.new assets/share/registry/$$F; \
-		done; \
-	fi
-
-	mkdir -p assets/unpack/program
-	echo '[Bootstrap]' > assets/unpack/program/sofficerc
-	echo 'Logo=1' >> assets/unpack/program/sofficerc
-	echo 'NativeProgress=1' >> assets/unpack/program/sofficerc
-	echo 'URE_BOOTSTRAP=file:///assets/program/fundamentalrc' >> assets/unpack/program/sofficerc
-	echo 'HOME=$$APP_DATA_DIR/cache' >> assets/unpack/program/sofficerc
-	echo 'OSL_SOCKET_PATH=$$APP_DATA_DIR/cache' >> assets/unpack/program/sofficerc
-#
-# Set up fundamentalrc
-	echo '[Bootstrap]' > assets/program/fundamentalrc
-	echo 'LO_LIB_DIR=file://$$APP_DATA_DIR/lib/' >> assets/program/fundamentalrc
-	echo 'BRAND_BASE_DIR=file:///assets' >> assets/program/fundamentalrc
-	echo 'CONFIGURATION_LAYERS=xcsxcu:$${BRAND_BASE_DIR}/share/registry res:$${BRAND_BASE_DIR}/share/registry' >> assets/program/fundamentalrc
-	echo 'URE_BIN_DIR=file:///assets/ure/bin/dir/nothing-here/we-can/exec-anyway' >> assets/program/fundamentalrc
-#
-# Set up unorc
-	echo '[Bootstrap]' > assets/program/unorc
-	echo 'URE_INTERNAL_LIB_DIR=file://$$APP_DATA_DIR/lib/' >> assets/program/unorc
-	echo 'UNO_TYPES=file://$$APP_DATA_DIR/program/udkapi.rdb file://$$APP_DATA_DIR/program/offapi.rdb file://$$APP_DATA_DIR/program/oovbaapi.rdb' >> assets/program/unorc
-	echo 'UNO_SERVICES=file:///assets/program/services.rdb file:///assets/program/services/services.rdb' >> assets/program/unorc
-#
-# Set up bootstraprc
-	echo '[Bootstrap]' > assets/program/bootstraprc
-	echo 'InstallMode=<installmode>' >> assets/program/bootstraprc
-	echo 'ProductKey=LibreOffice $(LIBO_VERSION_MAJOR).$(LIBO_VERSION_MINOR)' >> assets/program/bootstraprc
-	echo 'UserInstallation=file://$$APP_DATA_DIR' >> assets/program/bootstraprc
-#
-# Set up versionrc
-	echo '[Version]' > assets/program/versionrc
-	echo 'AllLanguages=en-US' >> assets/program/versionrc
-	echo 'BuildVersion=' >> assets/program/versionrc
-	echo 'buildid=$(shell cd $(SRCDIR) && git log -1 --format=%H)' >> assets/program/versionrc
-	echo 'ReferenceOOoMajorMinor=4.1' >> assets/program/versionrc
-	sed -e 's|@ANDROID_DEBUGGABLE@|$(if $(ENABLE_DEBUG),android:debuggable="true",)|' \
-	    -e 's|@ANDROID_INSTALL_LOCATION@|$(if $(ENABLE_DEBUG),internalOnly,preferExternal)|' \
-	    -e 's|@ANDROID_VERSION_NAME@|$(LIBO_VERSION_MAJOR).$(LIBO_VERSION_MINOR).$(LIBO_VERSION_MICRO).$(LIBO_VERSION_PATCH)$(LIBO_VERSION_SUFFIX)$(LIBO_VERSION_SUFFIX_SUFFIX)/$(shell cd $(SRCDIR) && git log -1 --format=%h)/$(OOO_VENDOR)|' \
-	    -e 's|@ANDROID_VERSION_NUMBER@|$(if $(versionCode),$(versionCode),1)|' \
-	    < AndroidManifest.xml.in > AndroidManifest.xml
-#
-# .res files
-	mkdir -p assets/program/resource
-	cp $(INSTDIR)/$(LIBO_SHARE_RESOURCE_FOLDER)/*en-US.res assets/program/resource
-#
-# Assets that are unpacked at run-time into the app's data directory. These
-# are files read by non-LO code, fontconfig and freetype for now, that doesn't
-# understand "/assets" paths.
-	mkdir -p assets/unpack/etc/fonts
-	cp fonts.conf assets/unpack/etc/fonts
-# $UserInstallation/user/fonts is added to the fontconfig path in
-# vcl/generic/fontmanager/helper.cxx: psp::getFontPath(). UserInstallation is
-# set to the app's data dir above.
-	mkdir -p assets/gz.unpack/user/fonts
-	for F in $(INSTDIR)/share/fonts/truetype/Liberation*.ttf \
-	         $(INSTDIR)/share/fonts/truetype/Caladea-*.ttf \
-	         $(INSTDIR)/share/fonts/truetype/Carlito-*.ttf \
-	         $(INSTDIR)/share/fonts/truetype/Gen*.ttf \
-		 $(INSTDIR)/share/fonts/truetype/opens___.ttf; do \
-		gzip -9 <$$F >assets/gz.unpack/user/fonts/`basename $$F`; \
-	done
-#
-# Then gdbserver and gdb.setup so that we can debug with ndk-gdb.
-#
-	mkdir -p $(SODEST)
-	cp $(ANDROID_NDK_GDBSERVER) $(SODEST)
-	echo set solib-search-path ./obj/local/$(ANDROID_APP_ABI) >$(SODEST)/gdb.setup
+# build-host specific stuff (build paths and the like) to keep build.gradle static
+liboSettings.gradle: $(BUILDDIR)/config_build.mk $(BUILDDIR)/config_host.mk
+	@echo "creating $@"
+	( \
+		echo "// created by Makefile.shared - your changes will be overridden" \
+		&& echo "ext {" \
+		&& echo "    liboSrcRoot         = '$(SRC_ROOT)'" \
+		&& echo "    liboWorkdir         = '$(WORKDIR)'" \
+		&& echo "    liboInstdir         = '$(INSTDIR)'" \
+		&& echo "    liboEtcFolder       = '$(LIBO_ETC_FOLDER)'" \
+		&& echo "    liboUreMiscFolder   = '$(LIBO_URE_MISC_FOLDER)'" \
+		&& echo "    liboSharedResFolder = '$(LIBO_SHARE_RESOURCE_FOLDER)'" \
+		&& echo "    liboUREJavaFolder   = '$(LIBO_URE_SHARE_JAVA_FOLDER)'" \
+		&& echo "    liboShareJavaFolder = '$(LIBO_SHARE_JAVA_FOLDER)'" \
+		&& echo "    liboExampleDocument = '$(if $(exampleDocument),$(exampleDocument),$(SRC_ROOT)/android/default-document/example.odt)'" \
+		&& echo "    liboVersionMajor    = '$(LIBO_VERSION_MAJOR)'" \
+		&& echo "    liboVersionMinor    = '$(LIBO_VERSION_MINOR)'" \
+		&& echo "    liboGitFullCommit   = '$(shell cd $(SRCDIR) && git log -1 --format=%H)'" \
+		&& echo "    liboNdkGdbserver    = '$(ANDROID_NDK_GDBSERVER)'" \
+		&& echo "    liboAndroidAppAbi   = '$(ANDROID_APP_ABI)'" \
+		&& echo "}" \
+		&& echo "android.defaultConfig {" \
+		&& echo "    applicationId '$(ANDROID_PACKAGE_NAME)'" \
+		&& echo "    versionCode project.hasProperty('cmdVersionCode') ? cmdVersionCode.toInteger() : $(if $(versionCode),$(versionCode),1)" \
+		&& echo "    versionName '$(LIBO_VERSION_MAJOR).$(LIBO_VERSION_MINOR).$(LIBO_VERSION_MICRO).$(LIBO_VERSION_PATCH)$(LIBO_VERSION_SUFFIX)$(LIBO_VERSION_SUFFIX_SUFFIX)/$(shell cd $(SRCDIR) && git log -1 --format=%h)/$(OOO_VENDOR)'" \
+		&& echo "}" \
+	) > $@
diff --git a/android/Bootstrap/ant.properties b/android/Bootstrap/ant.properties
deleted file mode 100644
index ee52d86d94a4..000000000000
--- a/android/Bootstrap/ant.properties
+++ /dev/null
@@ -1,17 +0,0 @@
-# This file is used to override default values used by the Ant build system.
-#
-# This file must be checked in Version Control Systems, as it is
-# integral to the build system of your project.
-
-# This file is only used by the Ant script.
-
-# You can use this to override default values such as
-#  'source.dir' for the location of your java source folder and
-#  'out.dir' for the location of your output folder.
-
-# You can also use it define how the release builds are signed by declaring
-# the following properties:
-#  'key.store' for the location of your keystore and
-#  'key.alias' for the name of the key to use.
-# The password will be asked during the build when you use the 'release' target.
-
diff --git a/android/Bootstrap/build.xml b/android/Bootstrap/build.xml
deleted file mode 100644
index a186d8d62060..000000000000
--- a/android/Bootstrap/build.xml
+++ /dev/null
@@ -1,85 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project name="LibreOfficeBootstrap" default="help">
-
-    <!-- The local.properties file is created and updated by the 'android' tool.
-         It contains the path to the SDK. It should *NOT* be checked into
-         Version Control Systems. -->
-    <loadproperties srcFile="local.properties" />
-
-    <!-- The ant.properties file can be created by you. It is only edited by the
-         'android' tool to add properties to it.
-         This is the place to change some Ant specific build properties.
-         Here are some properties you may want to change/update:
-
-         source.dir
-             The name of the source directory. Default is 'src'.
-         out.dir
-             The name of the output directory. Default is 'bin'.
-
-         For other overridable properties, look at the beginning of the rules
-         files in the SDK, at tools/ant/build.xml
-
-         Properties related to the SDK location or the project target should
-         be updated using the 'android' tool with the 'update' action.
-
-         This file is an integral part of the build system for your
-         application and should be checked into Version Control Systems.
-
-         -->
-    <property file="ant.properties" />
-
-    <!-- The project.properties file is created and updated by the 'android'
-         tool, as well as ADT.
-
-         This contains project specific properties such as project target, and library
-         dependencies. Lower level build properties are stored in ant.properties
-         (or in .classpath for Eclipse projects).
-
-         This file is an integral part of the build system for your
-         application and should be checked into Version Control Systems. -->
-    <loadproperties srcFile="project.properties" />
-
-    <!-- quick check on sdk.dir -->
-    <fail
-            message="sdk.dir is missing. Make sure to generate local.properties using 'android update project'"
-            unless="sdk.dir"
-    />
-
-
-<!-- extension targets. Uncomment the ones where you want to do custom work
-     in between standard targets -->
-<!--
-    <target name="-pre-build">
-    </target>
-    <target name="-pre-compile">
-    </target>
-
-    /* This is typically used for code obfuscation.
-       Compiled code location: ${out.classes.absolute.dir}
-       If this is not done in place, override ${out.dex.input.absolute.dir} */
-    <target name="-post-compile">
-    </target>
--->
-
-    <!-- Import the actual build file.
-
-         To customize existing targets, there are two options:
-         - Customize only one target:
-             - copy/paste the target into this file, *before* the
-               <import> task.
-             - customize it to your needs.
-         - Customize the whole content of build.xml
-             - copy/paste the content of the rules files (minus the top node)
-               into this file, replacing the <import> task.
-             - customize to your needs.
-
-         ***********************
-         ****** IMPORTANT ******
-         ***********************
-         In all cases you must update the value of version-tag below to read 'custom' instead of an integer,
-         in order to avoid having your file be overridden by tools such as "android update project"
-    -->
-    <!-- version-tag: 1 -->
-    <import file="${sdk.dir}/tools/ant/build.xml" />
-
-</project>
diff --git a/android/Bootstrap/no-resource-compress-20.xml b/android/Bootstrap/no-resource-compress-20.xml
deleted file mode 100644
index dd0fee0fcbe0..000000000000
--- a/android/Bootstrap/no-resource-compress-20.xml
+++ /dev/null
@@ -1,45 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project name="clobber_android_rules" default="debug">
-
-    <import file="${sdk.dir}/tools/ant/build.xml" />
-
-<!--
-    This is copy/pasted from ${sdk.dir}/tools/ant/build.xml
-    and tweaked - it needs to match the same SDK version as
-    your build
--->
-
-<!--
-    This file is auto-generated by Bootstrap/Makefile.shared from
-    a versioned .xml file - please edit me there
--->
-
-    <target name="-package-resources" depends="-crunch">
-        <!-- only package resources if *not* a library project -->
-        <do-only-if-not-library elseText="Library project: do not package resources..." >
-            <aapt executable="${aapt}"
-                    command="package"
-                    manifestpackage="@ANDROID_PACKAGE_NAME@"
-                    versioncode="${version.code}"
-                    versionname="${version.name}"
-                    debug="${build.is.packaging.debug}"
-                    manifest="${out.manifest.abs.file}"
-                    assets="${asset.absolute.dir}"
-                    androidjar="${project.target.android.jar}"
-                    apkfolder="${out.absolute.dir}"
-                    nocrunch="${build.packaging.nocrunch}"
-                    resourcefilename="${resource.package.file.name}"
-                    resourcefilter="${aapt.resource.filter}"
-                    libraryResFolderPathRefid="project.library.res.folder.path"
-                    libraryPackagesRefid="project.library.packages"
-                    previousBuildType="${build.last.target}"
-                    buildType="${build.target}"
-                    ignoreAssets="${aapt.ignore.assets}">
-                <res path="${out.res.absolute.dir}" />
-                <res path="${resource.absolute.dir}" />
-                <nocompress/> <!-- forces no compression on any files in assets or res/raw -->
-                <!-- <nocompress extension="xml" /> forces no compression on specific file extensions in assets and res/raw -->
-            </aapt>
-        </do-only-if-not-library>
-    </target>
-</project>
diff --git a/android/Bootstrap/no-resource-compress-21.xml b/android/Bootstrap/no-resource-compress-21.xml
deleted file mode 100644
index c06f8391747c..000000000000
--- a/android/Bootstrap/no-resource-compress-21.xml
+++ /dev/null
@@ -1,46 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project name="clobber_android_rules" default="debug">
-
-    <import file="${sdk.dir}/tools/ant/build.xml" />
-
-<!--
-    This is copy/pasted from ${sdk.dir}/tools/ant/build.xml
-    and tweaked - it needs to match the same SDK version as
-    your build
--->
-
-<!--
-    This file is auto-generated by Bootstrap/Makefile.shared from
-    a versioned .xml file - please edit me there
--->
-
-    <target name="-package-resources" depends="-crunch">
-        <!-- only package resources if *not* a library project -->
-        <do-only-if-not-library elseText="Library project: do not package resources..." >
-            <aapt executable="${aapt}"
-                    command="package"
-                    manifestpackage="@ANDROID_PACKAGE_NAME@"
-                    versioncode="${version.code}"
-                    versionname="${version.name}"
-                    debug="${build.is.packaging.debug}"
-                    manifest="${out.manifest.abs.file}"
-                    assets="${asset.absolute.dir}"
-                    androidjar="${project.target.android.jar}"
-                    apkfolder="${out.absolute.dir}"
-                    nocrunch="${build.packaging.nocrunch}"
-                    resourcefilename="${resource.package.file.name}"
-                    resourcefilter="${aapt.resource.filter}"
-                    libraryResFolderPathRefid="project.library.res.folder.path"
-                    libraryPackagesRefid="project.library.packages"
-                    libraryRFileRefid="project.library.bin.r.file.path"
-                    previousBuildType="${build.last.target}"
-                    buildType="${build.target}"
-                    ignoreAssets="${aapt.ignore.assets}">
-                <res path="${out.res.absolute.dir}" />
-                <res path="${resource.absolute.dir}" />
-                <nocompress/> <!-- forces no compression on any files in assets or res/raw -->
-                <!-- <nocompress extension="xml" /> forces no compression on specific file extensions in assets and res/raw -->
-            </aapt>
-        </do-only-if-not-library>
-    </target>
-</project>
diff --git a/android/Bootstrap/no-resource-compress-22.xml b/android/Bootstrap/no-resource-compress-22.xml
deleted file mode 100644
index c06f8391747c..000000000000
--- a/android/Bootstrap/no-resource-compress-22.xml
+++ /dev/null
@@ -1,46 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project name="clobber_android_rules" default="debug">
-
-    <import file="${sdk.dir}/tools/ant/build.xml" />
-
-<!--
-    This is copy/pasted from ${sdk.dir}/tools/ant/build.xml
-    and tweaked - it needs to match the same SDK version as
-    your build
--->
-
-<!--
-    This file is auto-generated by Bootstrap/Makefile.shared from
-    a versioned .xml file - please edit me there
--->
-
-    <target name="-package-resources" depends="-crunch">
-        <!-- only package resources if *not* a library project -->
-        <do-only-if-not-library elseText="Library project: do not package resources..." >
-            <aapt executable="${aapt}"
-                    command="package"
-                    manifestpackage="@ANDROID_PACKAGE_NAME@"
-                    versioncode="${version.code}"
-                    versionname="${version.name}"
-                    debug="${build.is.packaging.debug}"
-                    manifest="${out.manifest.abs.file}"
-                    assets="${asset.absolute.dir}"
-                    androidjar="${project.target.android.jar}"
-                    apkfolder="${out.absolute.dir}"
-                    nocrunch="${build.packaging.nocrunch}"
-                    resourcefilename="${resource.package.file.name}"
-                    resourcefilter="${aapt.resource.filter}"
-                    libraryResFolderPathRefid="project.library.res.folder.path"
-                    libraryPackagesRefid="project.library.packages"
-                    libraryRFileRefid="project.library.bin.r.file.path"
-                    previousBuildType="${build.last.target}"
-                    buildType="${build.target}"
-                    ignoreAssets="${aapt.ignore.assets}">
-                <res path="${out.res.absolute.dir}" />
-                <res path="${resource.absolute.dir}" />
-                <nocompress/> <!-- forces no compression on any files in assets or res/raw -->
-                <!-- <nocompress extension="xml" /> forces no compression on specific file extensions in assets and res/raw -->
-            </aapt>
-        </do-only-if-not-library>
-    </target>
-</project>
diff --git a/android/Bootstrap/no-resource-compress-23.xml b/android/Bootstrap/no-resource-compress-23.xml
deleted file mode 100644
index c06f8391747c..000000000000
--- a/android/Bootstrap/no-resource-compress-23.xml
+++ /dev/null
@@ -1,46 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project name="clobber_android_rules" default="debug">
-
-    <import file="${sdk.dir}/tools/ant/build.xml" />
-
-<!--
-    This is copy/pasted from ${sdk.dir}/tools/ant/build.xml
-    and tweaked - it needs to match the same SDK version as
-    your build
--->
-
-<!--
-    This file is auto-generated by Bootstrap/Makefile.shared from
-    a versioned .xml file - please edit me there
--->
-
-    <target name="-package-resources" depends="-crunch">
-        <!-- only package resources if *not* a library project -->
-        <do-only-if-not-library elseText="Library project: do not package resources..." >
-            <aapt executable="${aapt}"
-                    command="package"
-                    manifestpackage="@ANDROID_PACKAGE_NAME@"
-                    versioncode="${version.code}"
-                    versionname="${version.name}"
-                    debug="${build.is.packaging.debug}"
-                    manifest="${out.manifest.abs.file}"
-                    assets="${asset.absolute.dir}"
-                    androidjar="${project.target.android.jar}"
-                    apkfolder="${out.absolute.dir}"
-                    nocrunch="${build.packaging.nocrunch}"
-                    resourcefilename="${resource.package.file.name}"
-                    resourcefilter="${aapt.resource.filter}"
-                    libraryResFolderPathRefid="project.library.res.folder.path"
-                    libraryPackagesRefid="project.library.packages"
-                    libraryRFileRefid="project.library.bin.r.file.path"
-                    previousBuildType="${build.last.target}"
-                    buildType="${build.target}"
-                    ignoreAssets="${aapt.ignore.assets}">
-                <res path="${out.res.absolute.dir}" />
-                <res path="${resource.absolute.dir}" />
-                <nocompress/> <!-- forces no compression on any files in assets or res/raw -->
-                <!-- <nocompress extension="xml" /> forces no compression on specific file extensions in assets and res/raw -->
-            </aapt>
-        </do-only-if-not-library>
-    </target>
-</project>
diff --git a/android/Bootstrap/no-resource-compress-24.xml b/android/Bootstrap/no-resource-compress-24.xml
deleted file mode 100644
index c06f8391747c..000000000000
--- a/android/Bootstrap/no-resource-compress-24.xml
+++ /dev/null
@@ -1,46 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project name="clobber_android_rules" default="debug">
-
-    <import file="${sdk.dir}/tools/ant/build.xml" />
-
-<!--
-    This is copy/pasted from ${sdk.dir}/tools/ant/build.xml
-    and tweaked - it needs to match the same SDK version as
-    your build
--->
-
-<!--
-    This file is auto-generated by Bootstrap/Makefile.shared from
-    a versioned .xml file - please edit me there
--->
-
-    <target name="-package-resources" depends="-crunch">
-        <!-- only package resources if *not* a library project -->
-        <do-only-if-not-library elseText="Library project: do not package resources..." >
-            <aapt executable="${aapt}"
-                    command="package"
-                    manifestpackage="@ANDROID_PACKAGE_NAME@"
-                    versioncode="${version.code}"
-                    versionname="${version.name}"
-                    debug="${build.is.packaging.debug}"
-                    manifest="${out.manifest.abs.file}"
-                    assets="${asset.absolute.dir}"
-                    androidjar="${project.target.android.jar}"
-                    apkfolder="${out.absolute.dir}"
-                    nocrunch="${build.packaging.nocrunch}"
-                    resourcefilename="${resource.package.file.name}"
-                    resourcefilter="${aapt.resource.filter}"
-                    libraryResFolderPathRefid="project.library.res.folder.path"
-                    libraryPackagesRefid="project.library.packages"
-                    libraryRFileRefid="project.library.bin.r.file.path"
-                    previousBuildType="${build.last.target}"
-                    buildType="${build.target}"
-                    ignoreAssets="${aapt.ignore.assets}">
-                <res path="${out.res.absolute.dir}" />
-                <res path="${resource.absolute.dir}" />
-                <nocompress/> <!-- forces no compression on any files in assets or res/raw -->
-                <!-- <nocompress extension="xml" /> forces no compression on specific file extensions in assets and res/raw -->
-            </aapt>
-        </do-only-if-not-library>
-    </target>
-</project>
diff --git a/android/Bootstrap/project.properties b/android/Bootstrap/project.properties
deleted file mode 100644
index cb55769c3b1f..000000000000
--- a/android/Bootstrap/project.properties
+++ /dev/null
@@ -1,12 +0,0 @@
-# This file is automatically generated by Android Tools.
-# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
-#
-# This file must be checked in Version Control Systems.
-#
-# To customize properties used by the Ant build system use,
-# "ant.properties", and override values to adapt the script to your
-# project structure.
-
-android.library=true
-# Project target.
-target=android-23
diff --git a/android/CustomTarget_lo_android.mk b/android/CustomTarget_lo_android.mk
index 37f3012e6275..05d6d4353d9f 100644
--- a/android/CustomTarget_lo_android.mk
+++ b/android/CustomTarget_lo_android.mk
@@ -20,7 +20,7 @@ $(loandroid3_DIR)/done : $(call gb_Postprocess_get_target,AllModulesButInstsetNa
 # still looks for the .apk, and we want fresh daily builds to be uploaded.
 # Us "foo" instead of the old INPATH
 	mkdir -p $(BUILDDIR)/instsetoo_native/foo/bin; \
-	cp $(SRCDIR)/android/source/bin/*-debug.apk $(BUILDDIR)/instsetoo_native/foo/bin
+	cp $(SRCDIR)/android/source/build/outputs/apk/*-debug.apk $(BUILDDIR)/instsetoo_native/foo/bin
 
 $(call gb_CustomTarget_get_clean_target,android/loandroid3) :
 	$(call gb_Output_announce,$(subst $(WORKDIR)/Clean/,,$@),$(false),MAK,2)
diff --git a/android/Makefile b/android/Makefile
index 3d7763a4de08..5d877d417d12 100644
--- a/android/Makefile
+++ b/android/Makefile
@@ -23,8 +23,8 @@ release-apk: build
 	rm -f $(SIGNED_APK)
 
 	# the actual signing
-	jarsigner --verbose -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore ~/.keystore $(BUILDDIR)/android/source/bin/LibreOfficeViewer-release-unsigned.apk $(key)
-	$(ANDROID_SDK_HOME)/build-tools/*/zipalign -v 4 $(BUILDDIR)/android/source/bin/LibreOfficeViewer-release-unsigned.apk $(SIGNED_APK)
+	jarsigner --verbose -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore ~/.keystore $(BUILDDIR)/android/source/build/outputs/apk/LibreOfficeViewer-strippedUI-release-unsigned.apk $(key)
+	$(ANDROID_SDK_HOME)/build-tools/*/zipalign -v 4 $(BUILDDIR)/android/source/build/outputs/apk/LibreOfficeViewer-strippedUI-release-unsigned.apk $(SIGNED_APK)
 
 	@echo
 	@echo "Resulting signed apk: $(SIGNED_APK)"
diff --git a/android/source/AndroidManifest.xml.in b/android/source/AndroidManifest.xml
index b45918297322..f15e66f083a7 100644
--- a/android/source/AndroidManifest.xml.in
+++ b/android/source/AndroidManifest.xml
@@ -1,9 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="org.libreoffice"
-    android:installLocation="@ANDROID_INSTALL_LOCATION@"
-    android:versionCode="@ANDROID_VERSION_NUMBER@"
-    android:versionName="@ANDROID_VERSION_NAME@">
+    android:installLocation="${installLocation}">
 
     <!-- App requires OpenGL ES 2.0 -->
     <uses-feature android:glEsVersion="0x00020000" android:required="true" />
@@ -12,7 +10,6 @@
     <uses-permission android:name="android.permission.INTERNET" />
 
     <application
-        @ANDROID_DEBUGGABLE@
         android:allowBackup="true"
         android:icon="@drawable/main"
         android:label="@string/app_name"
diff --git a/android/source/Makefile b/android/source/Makefile
index 5c51db8ed5db..6f2f96803f37 100644
--- a/android/source/Makefile
+++ b/android/source/Makefile
@@ -5,11 +5,7 @@ endif
 
 # The default target just builds.
 
-all: build-ant
-
-# The package of this app
-# The setting from configure (ANDROID_PACKAGE_NAME) is applied in later stages.
-APP_PACKAGE=org.libreoffice
+all: build-gradle
 
 DISABLE_UI=TRUE
 BOOTSTRAPDIR=../Bootstrap
@@ -18,27 +14,25 @@ include $(BOOTSTRAPDIR)/Makefile.shared
 native-code.cxx: $(SRCDIR)/solenv/bin/native-code.py
 	$< -j -g core -g writer -g calc -g draw -g edit > $@
 
-build-ant: android_version_setup copy-stuff prepare-appcompat link-so properties
-#
-# Copy jar files we need
-#
-	for F in java_uno \
-		 juh \
-		 jurt \
-		 ridl \
-		 unoloader; do \
-	    $(call COPYJAR,$(INSTDIR)/$(LIBO_URE_SHARE_JAVA_FOLDER)/$${F}.jar); \
-	done
-	for F in unoil; do \
-	    $(call COPYJAR,$(INSTDIR)/$(LIBO_SHARE_JAVA_FOLDER)/$${F}.jar); \
-	done
-	#ownCloud lib dependency
-	$(call COPYJAR,$(WORKDIR)/UnpackedTarball/owncloud_android_lib/bin/owncloud-android-library.jar)
-#
-	unset JAVA_HOME && $(ANT) $(if $(verbose),,-quiet) $(if $(ENABLE_RELEASE_BUILD),release,debug)
+install:
+	./gradlew $(if $(verbose),--info) $(if $(versionCode),-PcmdVersionCode=$(versionCode)) install$(if $(DISABLE_UI),StrippedUI,FullUI)Debug
+	@echo
+	@echo 'Run it with "make run"'
+	@echo
+
+uninstall:
+	$(ANDROID_SDK_HOME)/platform-tools/adb uninstall $(ANDROID_PACKAGE_NAME)
+
+clean:
+	rm -rf assets assets_fullUI assets_strippedUI jniLibs jniLibs_debug $(OBJLOCAL)
+	rm -f native-code.cxx
+	rm -f liboSettings.gradle
+
+build-gradle: liboSettings.gradle local.properties link-so
+	./gradlew $(if $(verbose),--info) $(if $(versionCode),-PcmdVersionCode=$(versionCode)) assemble$(if $(DISABLE_UI),StrippedUI,FullUI)$(if $(ENABLE_RELEASE_BUILD),Release,Debug)
 
 run:
-	adb shell am start -n $(APP_PACKAGE)/.ui.LibreOfficeUIActivity
+	$(ANDROID_SDK_HOME)/platform-tools/adb shell am start -n $(ANDROID_PACKAGE_NAME)/.ui.LibreOfficeUIActivity
 
 debugrun:
 	$(SYSBASE)/../../../ndk-gdb --start
diff --git a/android/source/build.gradle b/android/source/build.gradle
new file mode 100644
index 000000000000..8e2355c24642
--- /dev/null
+++ b/android/source/build.gradle
@@ -0,0 +1,273 @@
+project.ext.set("archivesBaseName", "LibreOfficeViewer")
+//build-time dependencies - android plugin for gradle
+buildscript {
+    repositories {
+        jcenter()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:1.3.1'
+    }
+}
+
+apply plugin: 'com.android.application'
+// buildhost settings - paths and the like
+apply from: 'liboSettings.gradle'
+
+// compile-time dependencies
+dependencies {
+    compile fileTree(dir: "${liboInstdir}/${liboUREJavaFolder}", include: [
+            "java_uno.jar",
+            "juh.jar",
+            "jurt.jar",
+            "ridl.jar",
+            "unoloader.jar"
+    ])
+    compile files("${liboInstdir}/${liboShareJavaFolder}/unoil.jar")
+    compile files("${liboWorkdir}/UnpackedTarball/owncloud_android_lib/bin/owncloud-android-library.jar")
+    compile 'com.android.support:support-v4:23.0.1'
+    compile 'com.android.support:appcompat-v7:23.0.1'
+}
+
+android {
+    compileSdkVersion 23
+    buildToolsVersion "23.0.1"
+    compileOptions {
+        // silence some java-language features hints
+        sourceCompatibility 6
+    }
+    // uses non-conventional source layout, so need to reconfigure accordingly
+    // ToDo move to conventional layout, so stuff can be stripped down.
+    sourceSets {
+        main.manifest.srcFile 'AndroidManifest.xml'
+        main.assets.srcDirs = ['assets']
+        main.res.srcDirs = ['res']
+        main.java.srcDirs = ['../Bootstrap/src', 'src/java']
+        main.jniLibs.srcDirs = ['jniLibs']
+        main.jni.srcDirs = [] // don't attempt to build native-lib via gradle
+        // gdbserver stuff from separate dir
+        debug.jniLibs.srcDirs "jniLibs_debug"
+        // the configuration data that might be stripped or not
+        fullUI.assets.srcDirs 'assets_fullUI'
+        strippedUI.assets.srcDirs 'assets_strippedUI'
+    }
+    // defaults for Manifest
+    defaultConfig {
+        minSdkVersion 14
+        targetSdkVersion 23
+        manifestPlaceholders = [installLocation: "preferExternal"]
+    }
+    buildTypes {
+        debug {
+            // make android studio happy...
+            jniDebuggable true
+            // would work just fine with external, but setting emulator up is a little more work
+            manifestPlaceholders = [installLocation: "internalOnly"]
+        }
+    }
+    productFlavors {
+        strippedUI
+        fullUI
+    }
+}
+
+/* remark inherited from makefile:
+Then "assets". Let the directory structure under assets mimic
+that under solver for now.
+
+Please note that I have no idea what all of this is really necessary and for
+much of this stuff being copied, no idea whether it makes any sense at all.
+Much of this is copy-pasted from android/qa/sc/Makefile (where a couple of
+unit tests for sc are built, and those do seem to mostly work) and
+android/qa/desktop/Makefile (mmeeks's desktop demo, also works to some
+extent)
+ */
+
+// Assets that are unpacked at run-time into the app's data directory. These
+// are files read by non-LO code, fontconfig and freetype for now, that doesn't
+// understand "/assets" paths.
+task copyUnpackAssets(type: Copy) {
+    description "copies assets that need to be extracted on the device"
+    into 'assets/unpack'
+    into('program') {
+        from("${liboInstdir}/${liboEtcFolder}/types") {
+            includes = [
+                    "offapi.rdb",
+                    "oovbaapi.rdb"
+            ]
+        }
+        from("${liboInstdir}/${liboUreMiscFolder}") {
+            includes = ["types.rdb"]
+            rename 'types.rdb', 'udkapi.rdb'
+        }
+    }
+    into('user/fonts') {
+        from "${liboInstdir}/share/fonts/truetype"
+        // Note: restrict list of fonts due to size considerations - no technical reason anymore
+        // ToDo: fonts would be good candidate for using Expansion Files instead
+        includes = [
+                "Liberation*.ttf",
+                "Caladea-*.ttf",
+                "Carlito-*.ttf",
+                "Gen*.ttf",
+                "opens___.ttf"
+        ]
+    }
+    into('etc/fonts') {
+        from "./"
+        includes = ['fonts.conf']
+        filter {
+            String line ->
+                line.replaceAll(
+                        '@@APPLICATION_ID@@', new String("${android.defaultConfig.applicationId}")
+                )
+        }
+    }
+}
+
+task copyAssets(type: Copy) {
+    description "copies assets that can be accessed within the installed apk"
+    into 'assets'
+    from("${liboSrcRoot}/readlicense_oo/license/") {
+        includes = ["LICENSE", "NOTICE"]
+        rename "LICENSE", "license.txt"
+        rename "NOTICE", "notice.txt"
+    }
+    from("${liboExampleDocument}") {
+        rename ".*", "example.odt"
+    }
+    into('program') {
+        from "${liboInstdir}/program"
+        includes = ['services.rdb', 'services/services.rdb']
+
+        into('resource') {
+            from "${liboInstdir}/${liboSharedResFolder}"
+            includes = ['*en-US.res']
+        }
+    }
+    into('share') {
+        from "${liboInstdir}/share"
+        // Filter data is needed by e.g. the drawingML preset shape import.
+        includes = ['registry/**', 'filter/**']
+        // those two get processed by mobile-config.py
+        excludes = ['registry/main.xcd', 'registry/res/registry_en-US.xcd']
+    }
+}
+
+task createFullConfig(type: Copy) {
+    // grab dir to clear whole hierarchy on clean target
+    outputs.dir "assets_fullUI"
+    into 'assets_fullUI/share/config/soffice.cfg'
+    from "${liboInstdir}/share/config/soffice.cfg"
+}
+
+task createStrippedConfig {
+    def preserveDir = file("assets_strippedUI/share/share/config/soffice.cfg/empty")
+    outputs.dir "assets_strippedUI"
+    outputs.dir "assets_strippedUI/share/registry/res"
+    outputs.file preserveDir
+
+    doLast {
+        file('assets_strippedUI/share/registry/res').mkdirs()
+        file("assets_strippedUI/share/share/config/soffice.cfg").mkdirs()
+        // just empty file
+        preserveDir.text = ""
+    }
+}
+
+
+task createStrippedConfigMain(type: Exec) {
+    dependsOn 'createStrippedConfig'
+    inputs.files "${liboInstdir}/share/registry/main.xcd", "${liboSrcRoot}/android/mobile-config.py"
+    outputs.file "assets_strippedUI/share/registry/main.xcd"
+    executable "${liboSrcRoot}/android/mobile-config.py"
+    args = ["${liboInstdir}/share/registry/main.xcd", "assets_strippedUI/share/registry/main.xcd"]
+}
+
+task createStrippedConfigRegistry(type: Exec) {
+    dependsOn 'createStrippedConfig'
+    inputs.files "${liboInstdir}/share/registry/res/registry_en-US.xcd", "${liboSrcRoot}/android/mobile-config.py"
+    outputs.file "assets_strippedUI/share/registry/res/registry_en-US.xcd"
+    executable "${liboSrcRoot}/android/mobile-config.py"
+    args = ["${liboInstdir}/share/registry/res/registry_en-US.xcd", "assets_strippedUI/share/registry/res/registry_en-US.xcd"]
+    doFirst {
+        file('assets_strippedUI/share/registry/res').mkdirs()
+    }
+}
+
+task copyNdkDebugServer(type: Copy) {
+    description "copies gdbserver into and creates gdb.setup in the debug-type only native directory"
+    inputs.file "liboSettings.gradle"
+    def gdbsetup = file("jniLibs_debug/${liboAndroidAppAbi}/gdb.setup")
+    outputs.file gdbsetup
+    outputs.dir 'jniLibs_debug' // own the directory, so it is removed on this task's clean
+    into "jniLibs_debug/${liboAndroidAppAbi}"
+    from "${liboNdkGdbserver}"
+    doLast {
+        gdbsetup.text = "set solib-search-path ./obj/local/${liboAndroidAppAbi}"
+    }
+}
+
+task createRCfiles {
+    inputs.file "liboSettings.gradle"
+    dependsOn copyUnpackAssets, copyAssets
+    def sofficerc     = file('assets/unpack/program/sofficerc')
+    def fundamentalrc = file('assets/program/fundamentalrc')
+    def bootstraprc   = file('assets/program/bootstraprc')
+    def unorc         = file('assets/program/unorc')
+    def versionrc     = file('assets/program/versionrc')
+
+    outputs.files sofficerc, fundamentalrc, unorc, bootstraprc, versionrc
+
+    doLast {
+        sofficerc.text = '''\
+            [Bootstrap]
+            Logo=1
+            NativeProgress=1
+            URE_BOOTSTRAP=file:///assets/program/fundamentalrc
+            HOME=$APP_DATA_DIR/cache
+            OSL_SOCKET_PATH=$APP_DATA_DIR/cache
+            '''.stripIndent()
+
+        fundamentalrc.text =  '''\
+            [Bootstrap]
+            LO_LIB_DIR=file://$APP_DATA_DIR/lib/
+            BRAND_BASE_DIR=file:///assets
+            CONFIGURATION_LAYERS=xcsxcu:${BRAND_BASE_DIR}/share/registry res:${BRAND_BASE_DIR}/share/registry
+            URE_BIN_DIR=file:///assets/ure/bin/dir/nothing-here/we-can/exec-anyway
+            '''.stripIndent()
+
+        bootstraprc.text =  '''\
+            [Bootstrap]
+            InstallMode=<installmode>
+            ProductKey=LibreOffice '''+ "${liboVersionMajor}.${liboVersionMinor}" + '''
+            UserInstallation=file://$APP_DATA_DIR
+            '''.stripIndent()
+
+        unorc.text = '''\
+            [Bootstrap]
+            URE_INTERNAL_LIB_DIR=file://$APP_DATA_DIR/lib/
+            UNO_TYPES=file://$APP_DATA_DIR/program/udkapi.rdb file://$APP_DATA_DIR/program/offapi.rdb file://$APP_DATA_DIR/program/oovbaapi.rdb
+            UNO_SERVICES=file:///assets/program/services.rdb file:///assets/program/services/services.rdb
+            '''.stripIndent()
+
+        versionrc.text = '''\
+            [Version]
+            AllLanguages=en-US
+            BuildVersion=
+            buildid=''' + "${liboGitFullCommit}" + '''
+            ReferenceOOoMajorMinor=4.1
+            '''.stripIndent()
+    }
+}
+
+// creating the UI stuff is cheap, don't bother only applying it for the flavor..
+preBuild.dependsOn 'createRCfiles',
+        'createStrippedConfigMain',
+        'createStrippedConfigRegistry',
+        'createFullConfig',
+        'copyNdkDebugServer'
+
+clean.dependsOn 'cleanCopyAssets',
+        'cleanCreateStrippedConfig',
+        'cleanCreateFullConfig',
+        'cleanCopyNdkDebugServer'
diff --git a/android/source/build.xml b/android/source/build.xml
deleted file mode 100644
index 52d06eede74c..000000000000
--- a/android/source/build.xml
+++ /dev/null
@@ -1,84 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project name="LibreOfficeViewer" default="help">
-
-    <!-- The local.properties file is created and updated by the 'android' tool.
-         It contains the path to the SDK. It should *NOT* be checked into
-         Version Control Systems. -->
-    <loadproperties srcFile="local.properties" />
-
-    <!-- The ant.properties file can be created by you. It is only edited by the
-         'android' tool to add properties to it.
-         This is the place to change some Ant specific build properties.
-         Here are some properties you may want to change/update:
-
-         source.dir
-             The name of the source directory. Default is 'src'.
-         out.dir
-             The name of the output directory. Default is 'bin'.
-
-         For other overridable properties, look at the beginning of the rules
-         files in the SDK, at tools/ant/build.xml
-
-         Properties related to the SDK location or the project target should
-         be updated using the 'android' tool with the 'update' action.
-
-         This file is an integral part of the build system for your
-         application and should be checked into Version Control Systems.
-
-         -->
-    <property file="ant.properties" />
-
-    <!-- The project.properties file is created and updated by the 'android'
-         tool, as well as ADT.
-
-         This contains project specific properties such as project target, and library
-         dependencies. Lower level build properties are stored in ant.properties
-         (or in .classpath for Eclipse projects).
-
-         This file is an integral part of the build system for your
-         application and should be checked into Version Control Systems. -->
-    <loadproperties srcFile="project.properties" />
-
-    <!-- quick check on sdk.dir -->
-    <fail
-            message="sdk.dir is missing. Make sure to generate local.properties using 'android update project'"
-            unless="sdk.dir"
-    />
-
-
-<!-- extension targets. Uncomment the ones where you want to do custom work
-     in between standard targets -->
-<!--
-    <target name="-pre-build">
-    </target>
-    <target name="-pre-compile">
-    </target>
-
-    /* This is typically used for code obfuscation.
-       Compiled code location: ${out.classes.absolute.dir}
-       If this is not done in place, override ${out.dex.input.absolute.dir} */
-    <target name="-post-compile">
-    </target>
--->
-
-    <!-- Import the actual build file.
-
-         To customize existing targets, there are two options:
-         - Customize only one target:
-             - copy/paste the target into this file, *before* the
-               <import> task.
-             - customize it to your needs.
-         - Customize the whole content of build.xml
-             - copy/paste the content of the rules files (minus the top node)
-               into this file, replacing the <import> task.
-             - customize to your needs.
-
-         ***********************
-         ****** IMPORTANT ******
-         ***********************
-         In all cases you must update the value of version-tag below to read 'custom' instead of an integer,
-         in order to avoid having your file be overridden by tools such as "android update project"
-    -->
-    <!-- version-tag: 1 -->
-    <import file="${android.library.reference.1}/no-resource-compress.xml" />
-</project>
diff --git a/android/source/fonts.conf b/android/source/fonts.conf
index 263648a0aa87..972270d27939 100644
--- a/android/source/fonts.conf
+++ b/android/source/fonts.conf
@@ -74,7 +74,7 @@
 	     later to patch in proper code in fontonfig on Android to
 	     find out a good place.
 	-->
-	<cachedir>/data/data/org.libreoffice/fontconfig</cachedir>
+	<cachedir>/data/data/@@APPLICATION_ID@@/fontconfig</cachedir>
 
 	<config>
 <!--
diff --git a/android/source/gradle/wrapper/gradle-wrapper.jar b/android/source/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 000000000000..8c0fb64a8698
--- /dev/null
+++ b/android/source/gradle/wrapper/gradle-wrapper.jar
diff --git a/android/source/gradle/wrapper/gradle-wrapper.properties b/android/source/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 000000000000..8961816bf2d5
--- /dev/null
+++ b/android/source/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Tue Oct 06 15:23:16 CEST 2015
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.4-all.zip
diff --git a/android/source/gradlew b/android/source/gradlew
new file mode 100755
index 000000000000..91a7e269e19d
--- /dev/null
+++ b/android/source/gradlew
@@ -0,0 +1,164 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+esac
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched.
+if $cygwin ; then
+    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+fi
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >&-
+APP_HOME="`pwd -P`"
+cd "$SAVED" >&-
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
diff --git a/android/source/gradlew.bat b/android/source/gradlew.bat
new file mode 100755
index 000000000000..aec99730b4e8
--- /dev/null
+++ b/android/source/gradlew.bat
@@ -0,0 +1,90 @@
+@if "%DEBUG%" == "" @echo off

+@rem ##########################################################################

+@rem

+@rem  Gradle startup script for Windows

+@rem

+@rem ##########################################################################

+

+@rem Set local scope for the variables with windows NT shell

+if "%OS%"=="Windows_NT" setlocal

+

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

+set DIRNAME=%~dp0

+if "%DIRNAME%" == "" set DIRNAME=.

+set APP_BASE_NAME=%~n0

+set APP_HOME=%DIRNAME%

+

+@rem Find java.exe

+if defined JAVA_HOME goto findJavaFromJavaHome

+

+set JAVA_EXE=java.exe

+%JAVA_EXE% -version >NUL 2>&1

+if "%ERRORLEVEL%" == "0" goto init

+

+echo.

+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.

+echo.

+echo Please set the JAVA_HOME variable in your environment to match the

+echo location of your Java installation.

+

+goto fail

+

+:findJavaFromJavaHome

+set JAVA_HOME=%JAVA_HOME:"=%

+set JAVA_EXE=%JAVA_HOME%/bin/java.exe

+

+if exist "%JAVA_EXE%" goto init

+

+echo.

+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%

+echo.

+echo Please set the JAVA_HOME variable in your environment to match the

+echo location of your Java installation.

+

+goto fail

+

+:init

+@rem Get command-line arguments, handling Windowz variants

+

+if not "%OS%" == "Windows_NT" goto win9xME_args

+if "%@eval[2+2]" == "4" goto 4NT_args

+

+:win9xME_args

+@rem Slurp the command line arguments.

+set CMD_LINE_ARGS=

+set _SKIP=2

+

+:win9xME_args_slurp

+if "x%~1" == "x" goto execute

+

+set CMD_LINE_ARGS=%*

+goto execute

+

+:4NT_args

+@rem Get arguments from the 4NT Shell from JP Software

+set CMD_LINE_ARGS=%$

+

+:execute

+@rem Setup the command line

+

+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar

+

+@rem Execute Gradle

+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%

+

+:end

+@rem End local scope for the variables with windows NT shell

+if "%ERRORLEVEL%"=="0" goto mainEnd

+

+:fail

+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of

+rem the _cmd.exe /c_ return code!

+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1

+exit /b 1

+

+:mainEnd

+if "%OS%"=="Windows_NT" endlocal

+

+:omega

diff --git a/android/source/project.properties b/android/source/project.properties
deleted file mode 100644
index 62a52d4b5252..000000000000
--- a/android/source/project.properties
+++ /dev/null
@@ -1,15 +0,0 @@
-# This file is automatically generated by Android Tools.
-# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
-#
-# This file must be checked in Version Control Systems.
-#
-# To customize properties used by the Ant build system use,
-# "ant.properties", and override values to adapt the script to your
-# project structure.
-
-# Project target.
-target=android-23
-
-# Use the Bootstrap class
-android.library.reference.1=../Bootstrap
-android.library.reference.2=../AppCompat-v7