Merge pull request 'Android app proof-of-concept' (#48) from dsc/wowlet:android into master

Reviewed-on: https://git.wownero.com/wowlet/wowlet/pulls/48
2024-08-15 01:03:14 +00:00 · 2021-04-23 08:20:50 +00:00 · 2021-04-23 08:20:50 +00:00 · 499ad4a3aa
commit 499ad4a3aa
parent c50a341527 8b5bdc4c6a
15 changed files with 783 additions and 85 deletions
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -11,11 +11,13 @@ set(VERSION "beta-2")

 option(FETCH_DEPS "Download dependencies if they are not found" ON)
 option(XMRIG "Include XMRig module" ON)
-option(OPENVR "Include OpenVR support" OFF)
-option(QML "Include QtQuick (QML)" OFF)
-option(TOR_BIN "Path to Tor binary to embed inside WOWlet" OFF)
+option(OPENVR "Include OpenVR support")
+option(QML "Include QtQuick (QML)")
+option(ANDROID "Android deployment")
+option(ANDROID_DEBUG "View the Android app on desktop")
+option(TOR_BIN "Path to Tor binary to embed inside WOWlet")
 option(STATIC "Link libraries statically, requires static Qt")
-option(USE_DEVICE_TREZOR "Trezor support compilation" OFF)
+option(USE_DEVICE_TREZOR "Trezor support compilation")
 option(DONATE_BEG "Prompt donation window every once in a while" ON)
 list(INSERT CMAKE_MODULE_PATH 0 "${CMAKE_SOURCE_DIR}/cmake")
 include(CheckCCompilerFlag)
@ -28,11 +30,11 @@ include(CheckSymbolExists)

 set(WOWNERO_HEAD "f611d5c9e32bc62f1735f6571b0bdb95cc020531")
 set(BUILD_GUI_DEPS ON)
-set(ARCH "x86-64")
-set(BUILD_64 ON)
+set(ARCH "x86-64" CACHE STRING "Target architecture")
+set(BUILD_64 ON CACHE BOOL "Build 64-bit binaries")
 set(INSTALL_VENDORED_LIBUNBOUND ${STATIC})
 set(USE_SINGLE_BUILDDIR ON)
-if(OPENVR)
+if(OPENVR OR ANDROID_DEBUG)
    set(QML ON)
 endif()

@ -41,10 +43,7 @@ set(_CMAKE_BUILD_TYPE "")
 string(TOUPPER "${CMAKE_BUILD_TYPE}" _CMAKE_BUILD_TYPE)
 if("${_CMAKE_BUILD_TYPE}" STREQUAL "DEBUG")
    set(DEBUG ON)
-
    set(CMAKE_VERBOSE_MAKEFILE ON)
-    message(STATUS "OPENVR: ${OPENVR}")
-    message(STATUS "QML: ${QML}")
 endif()

 check_include_file(sys/prctl.h HAVE_SYS_PRCTL_H)
@ -173,7 +172,7 @@ find_package(Boost 1.58 REQUIRED COMPONENTS
        program_options
        locale)

-if(UNIX AND NOT APPLE)
+if(UNIX AND NOT APPLE AND NOT ANDROID)
    if (NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
        # https://github.com/monero-project/monero-gui/issues/3142#issuecomment-705940446
        set(CMAKE_SKIP_RPATH ON)
@ -195,6 +194,17 @@ if("$ENV{DRONE}" STREQUAL "true")
    message(STATUS "We are inside a static compile with Drone CI")
 endif()

+if(UNIX)
+    if(NOT CMAKE_PREFIX_PATH AND DEFINED ENV{CMAKE_PREFIX_PATH})
+        message(STATUS "Using CMAKE_PREFIX_PATH environment variable: '$ENV{CMAKE_PREFIX_PATH}'")
+        set(CMAKE_PREFIX_PATH $ENV{CMAKE_PREFIX_PATH})
+    endif()
+    if(APPLE AND NOT CMAKE_PREFIX_PATH)
+        execute_process(COMMAND brew --prefix qt5 OUTPUT_VARIABLE QT5_DIR OUTPUT_STRIP_TRAILING_WHITESPACE)
+        list(APPEND CMAKE_PREFIX_PATH ${QT5_DIR})
+    endif()
+endif()
+
 # To build WOWlet with embedded (and static) Tor, pass CMake -DTOR_BIN=/path/to/tor
 if(TOR_BIN)
    if(APPLE)
@ -264,7 +274,7 @@ elseif(DRAGONFLY)
    set(EXTRA_LIBRARIES execinfo ${COMPAT})
 elseif(CMAKE_SYSTEM_NAME MATCHES "(SunOS|Solaris)")
    set(EXTRA_LIBRARIES socket nsl resolv)
-elseif(NOT MSVC AND NOT DEPENDS)
+elseif(NOT MSVC AND NOT DEPENDS AND NOT ANDROID)
    find_library(RT rt)
    set(EXTRA_LIBRARIES ${RT})
 endif()
@ -384,10 +394,6 @@ if(OPENVR)
    add_subdirectory("${CMAKE_CURRENT_SOURCE_DIR}/contrib/openvr")
 endif()

-if(APPLE)
-    add_subdirectory("${CMAKE_CURRENT_SOURCE_DIR}/contrib/KDMacTouchBar")
-endif()
-
 if(WITH_SCANNER)
    add_library(quirc STATIC
            contrib/quirc/lib/decode.c
--- a/Dockerfile.android
+++ b/Dockerfile.android
@ -0,0 +1,245 @@
+FROM debian:stretch
+
+ARG THREADS=1
+ARG ANDROID_NDK_REVISION=21d
+ARG ANDROID_NDK_HASH=bcf4023eb8cb6976a4c7cff0a8a8f145f162bf4d
+ARG ANDROID_SDK_REVISION=4333796
+ARG ANDROID_SDK_HASH=92ffee5a1d98d856634e8b71132e8a95d96c83a63fde1099be3d86df3106def9
+ARG QT_VERSION=5.15.2
+
+WORKDIR /opt/android
+ENV WORKDIR=/opt/android
+
+ENV ANDROID_NATIVE_API_LEVEL=28
+ENV ANDROID_API=android-${ANDROID_NATIVE_API_LEVEL}
+ENV ANDROID_CLANG=aarch64-linux-android${ANDROID_NATIVE_API_LEVEL}-clang
+ENV ANDROID_CLANGPP=aarch64-linux-android${ANDROID_NATIVE_API_LEVEL}-clang++
+ENV ANDROID_NDK_ROOT=${WORKDIR}/android-ndk-r${ANDROID_NDK_REVISION}
+ENV ANDROID_SDK_ROOT=${WORKDIR}/tools
+ENV JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
+ENV PATH=${JAVA_HOME}/bin:${PATH}
+ENV PREFIX=${WORKDIR}/prefix
+ENV TOOLCHAIN_DIR=${ANDROID_NDK_ROOT}/toolchains/llvm/prebuilt/linux-x86_64
+
+RUN apt-get update \
+    && apt-get install -y ant automake build-essential ca-certificates-java file gettext git libc6 libncurses5 \
+    libssl-dev libstdc++6 libtinfo5 libtool libz1 openjdk-8-jdk-headless openjdk-8-jre-headless pkg-config python3 \
+    unzip wget
+
+RUN wget -q https://dl.google.com/android/repository/sdk-tools-linux-${ANDROID_SDK_REVISION}.zip \
+    && unzip -q sdk-tools-linux-${ANDROID_SDK_REVISION}.zip \
+    && rm -f sdk-tools-linux-${ANDROID_SDK_REVISION}.zip
+
+RUN wget -q https://dl.google.com/android/repository/android-ndk-r${ANDROID_NDK_REVISION}-linux-x86_64.zip \
+    && unzip -q android-ndk-r${ANDROID_NDK_REVISION}-linux-x86_64.zip \
+    && rm -f android-ndk-r${ANDROID_NDK_REVISION}-linux-x86_64.zip
+
+RUN cd ${ANDROID_SDK_ROOT} && echo y | ./bin/sdkmanager "platform-tools" "platforms;${ANDROID_API}" "tools" > /dev/null
+RUN cp -r ${WORKDIR}/platforms ${WORKDIR}/platform-tools ${ANDROID_SDK_ROOT}
+
+ENV HOST_PATH=${PATH}
+ENV PATH=${TOOLCHAIN_DIR}/aarch64-linux-android/bin:${TOOLCHAIN_DIR}/bin:${PATH}
+
+ARG ZLIB_VERSION=1.2.11
+ARG ZLIB_HASH=c3e5e9fdd5004dcb542feda5ee4f0ff0744628baf8ed2dd5d66f8ca1197cb1a1
+RUN wget -q https://zlib.net/zlib-${ZLIB_VERSION}.tar.gz \
+    && tar -xzf zlib-${ZLIB_VERSION}.tar.gz \
+    && rm zlib-${ZLIB_VERSION}.tar.gz \
+    && cd zlib-${ZLIB_VERSION} \
+    && CC=${ANDROID_CLANG} CXX=${ANDROID_CLANGPP} ./configure --prefix=${PREFIX} --static \
+    && make -j${THREADS} \
+    && make -j${THREADS} install \
+    && rm -rf $(pwd)
+
+RUN git clone git://code.qt.io/qt/qt5.git -b ${QT_VERSION} --depth 1 \
+    && cd qt5 \
+    && perl init-repository --module-subset=default,-qtwebengine \
+    && PATH=${HOST_PATH} ./configure -v -developer-build -release \
+    -xplatform android-clang \
+    -android-ndk-platform ${ANDROID_API} \
+    -android-ndk ${ANDROID_NDK_ROOT} \
+    -android-sdk ${ANDROID_SDK_ROOT} \
+    -android-ndk-host linux-x86_64 \
+    -no-dbus \
+    -opengl es2 \
+    -no-use-gold-linker \
+    -no-sql-mysql \
+    -opensource -confirm-license \
+    -android-arch arm64-v8a \
+    -prefix ${PREFIX} \
+    -nomake tools -nomake tests -nomake examples \
+    -skip qtwebengine \
+    -skip qtserialport \
+    -skip qtconnectivity \
+    -skip qttranslations \
+    -skip qtpurchasing \
+    -skip qtgamepad -skip qtscript -skip qtdoc \
+    -no-warnings-are-errors \
+    && sed -i '213,215d' qtbase/src/3rdparty/pcre2/src/sljit/sljitConfigInternal.h \
+    && PATH=${HOST_PATH} make -j${THREADS} \
+    && PATH=${HOST_PATH} make -j${THREADS} install \
+    && cd qttools/src/linguist/lrelease \
+    && ../../../../qtbase/bin/qmake \
+    && PATH=${HOST_PATH} make -j${THREADS} install \
+    && cd ../../../.. \
+    && rm -rf $(pwd)
+
+ARG ICONV_VERSION=1.16
+ARG ICONV_HASH=e6a1b1b589654277ee790cce3734f07876ac4ccfaecbee8afa0b649cf529cc04
+RUN wget -q http://ftp.gnu.org/pub/gnu/libiconv/libiconv-${ICONV_VERSION}.tar.gz \
+    && echo "${ICONV_HASH}  libiconv-${ICONV_VERSION}.tar.gz" | sha256sum -c \
+    && tar -xzf libiconv-${ICONV_VERSION}.tar.gz \
+    && rm -f libiconv-${ICONV_VERSION}.tar.gz \
+    && cd libiconv-${ICONV_VERSION} \
+    && CC=${ANDROID_CLANG} CXX=${ANDROID_CLANGPP} ./configure --build=x86_64-linux-gnu --host=aarch64 --prefix=${PREFIX} --disable-rpath \
+    && make -j${THREADS} \
+    && make -j${THREADS} install
+
+ARG BOOST_VERSION=1_74_0
+ARG BOOST_VERSION_DOT=1.74.0
+ARG BOOST_HASH=83bfc1507731a0906e387fc28b7ef5417d591429e51e788417fe9ff025e116b1
+RUN wget -q https://dl.bintray.com/boostorg/release/${BOOST_VERSION_DOT}/source/boost_${BOOST_VERSION}.tar.bz2 \
+    && echo "${BOOST_HASH}  boost_${BOOST_VERSION}.tar.bz2" | sha256sum -c \
+    && tar -xf boost_${BOOST_VERSION}.tar.bz2 \
+    && rm -f boost_${BOOST_VERSION}.tar.bz2 \
+    && cd boost_${BOOST_VERSION} \
+    && PATH=${HOST_PATH} ./bootstrap.sh --prefix=${PREFIX} \
+    && PATH=${TOOLCHAIN_DIR}/bin:${HOST_PATH} ./b2 --build-type=minimal link=static runtime-link=static \
+    --with-chrono --with-date_time --with-filesystem --with-program_options --with-regex --with-serialization \
+    --with-system --with-thread --with-locale --build-dir=android --stagedir=android toolset=clang threading=multi \
+    threadapi=pthread target-os=android -sICONV_PATH=${PREFIX} \
+    cflags='--target=aarch64-linux-android' \
+    cxxflags='--target=aarch64-linux-android' \
+    linkflags='--target=aarch64-linux-android --sysroot=${ANDROID_NDK_ROOT}/platforms/${ANDROID_API}/arch-arm64 ${ANDROID_NDK_ROOT}/sources/cxx-stl/llvm-libc++/libs/arm64-v8a/libc++_shared.so -nostdlib++' \
+    install -j${THREADS} \
+    && rm -rf $(pwd)
+
+ARG OPENSSL_VERSION=1.1.1g
+ARG OPENSSL_HASH=ddb04774f1e32f0c49751e21b67216ac87852ceb056b75209af2443400636d46
+RUN wget -q https://www.openssl.org/source/openssl-${OPENSSL_VERSION}.tar.gz \
+    && tar -xzf openssl-${OPENSSL_VERSION}.tar.gz \
+    && rm openssl-${OPENSSL_VERSION}.tar.gz \
+    && cd openssl-${OPENSSL_VERSION} \
+    && ANDROID_NDK_HOME=${ANDROID_NDK_ROOT} ./Configure CC=${ANDROID_CLANG} CXX=${ANDROID_CLANGPP} \
+    android-arm64 no-asm no-shared --static \
+    --with-zlib-include=${PREFIX}/include --with-zlib-lib=${PREFIX}/lib \
+    --prefix=${PREFIX} --openssldir=${PREFIX} \
+    && sed -i 's/CNF_EX_LIBS=-ldl -pthread//g;s/BIN_CFLAGS=-pie $(CNF_CFLAGS) $(CFLAGS)//g' Makefile \
+    && ANDROID_NDK_HOME=${ANDROID_NDK_ROOT} make -j${THREADS} \
+    && make -j${THREADS} install \
+    && rm -rf $(pwd)
+
+ARG ZMQ_VERSION=v4.3.3
+ARG ZMQ_HASH=04f5bbedee58c538934374dc45182d8fc5926fa3
+RUN git clone https://github.com/zeromq/libzmq.git -b ${ZMQ_VERSION} --depth 1 \
+    && cd libzmq \
+    && git checkout ${ZMQ_HASH} \
+    && ./autogen.sh \
+    && CC=${ANDROID_CLANG} CXX=${ANDROID_CLANGPP} ./configure --prefix=${PREFIX} --host=aarch64-linux-android \
+    --enable-static --disable-shared \
+    && make -j${THREADS} \
+    && make -j${THREADS} install \
+    && rm -rf $(pwd)
+
+ARG SODIUM_VERSION=1.0.18
+ARG SODIUM_HASH=4f5e89fa84ce1d178a6765b8b46f2b6f91216677
+RUN set -ex \
+    && git clone https://github.com/jedisct1/libsodium.git -b ${SODIUM_VERSION} --depth 1 \
+    && cd libsodium \
+    && test `git rev-parse HEAD` = ${SODIUM_HASH} || exit 1 \
+    && ./autogen.sh \
+    && CC=${ANDROID_CLANG} CXX=${ANDROID_CLANGPP} ./configure --prefix=${PREFIX} --host=aarch64-linux-android --enable-static --disable-shared \
+    && make -j${THREADS} install \
+    && rm -rf $(pwd)
+
+RUN git clone -b libgpg-error-1.38 --depth 1 git://git.gnupg.org/libgpg-error.git \
+    && cd libgpg-error \
+    && git reset --hard 71d278824c5fe61865f7927a2ed1aa3115f9e439 \
+    && ./autogen.sh \
+    && CC=${ANDROID_CLANG} CXX=${ANDROID_CLANGPP} ./configure --host=aarch64-linux-android --prefix=${PREFIX} --disable-rpath --disable-shared --enable-static --disable-doc --disable-tests \
+    && PATH=${TOOLCHAIN_DIR}/bin:${HOST_PATH} make -j${THREADS} \
+    && make -j${THREADS} install \
+    && rm -rf $(pwd)
+
+RUN git clone -b libgcrypt-1.8.5 --depth 1 git://git.gnupg.org/libgcrypt.git \
+    && cd libgcrypt \
+    && git reset --hard 56606331bc2a80536db9fc11ad53695126007298 \
+    && ./autogen.sh \
+    && CC=${ANDROID_CLANG} CXX=${ANDROID_CLANGPP} ./configure --host=aarch64-linux-android --prefix=${PREFIX} --with-gpg-error-prefix=${PREFIX} --disable-shared --enable-static --disable-doc --disable-tests \
+    && PATH=${TOOLCHAIN_DIR}/bin:${HOST_PATH} make -j${THREADS} \
+    && make -j${THREADS} install \
+    && rm -rf $(pwd)
+
+RUN cd tools \
+    && wget -q http://dl-ssl.google.com/android/repository/tools_r25.2.5-linux.zip \
+    && unzip -q tools_r25.2.5-linux.zip \
+    && rm -f tools_r25.2.5-linux.zip \
+    && echo y | ${ANDROID_SDK_ROOT}/tools/android update sdk --no-ui --all --filter build-tools-28.0.3
+
+RUN git clone -b v3.19.7 --depth 1 https://github.com/Kitware/CMake \
+    && cd CMake \
+    && git reset --hard 22612dd53a46c7f9b4c3f4b7dbe5c78f9afd9581 \
+    && PATH=${HOST_PATH} ./bootstrap \
+    && PATH=${HOST_PATH} make -j${THREADS} \
+    && PATH=${HOST_PATH} make -j${THREADS} install \
+    && rm -rf $(pwd)
+
+RUN git clone -b v1.6.35 --depth 1 https://github.com/glennrp/libpng.git && \
+    cd libpng && \
+    git reset --hard c17d164b4467f099b4484dfd4a279da0bc1dbd4a \
+    && CC=${ANDROID_CLANG} CXX=${ANDROID_CLANGPP} ./configure --with-zlib-prefix="${PREFIX}" --host=aarch64-linux-android --prefix=${PREFIX} --disable-shared --enable-static \
+    && PATH=${TOOLCHAIN_DIR}/bin:${HOST_PATH} make -j${THREADS} \
+    && make -j${THREADS} install \
+    && rm -rf $(pwd)
+
+# @TODO: don't hardcode ANDROID_PLATFORM
+RUN git clone -b v4.0.2 --depth 1 https://github.com/fukuchi/libqrencode.git && \
+    cd libqrencode && \
+    git reset --hard 59ee597f913fcfda7a010a6e106fbee2595f68e4 && \
+    CC=${ANDROID_CLANG} CXX=${ANDROID_CLANGPP} cmake \
+    -DCMAKE_TOOLCHAIN_FILE="${ANDROID_NDK_ROOT}/build/cmake/android.toolchain.cmake" \
+    -DANDROID_PLATFORM="28" \
+    -DBUILD_SHARED_LIBS=OFF \
+    -DARCH="armv8-a" \
+    -DANDROID_ABI="arm64-v8a" \
+    -DANDROID_TOOLCHAIN=clang \
+    -DCMAKE_PREFIX_PATH="${PREFIX}" \
+    -DPNG_PNG_INCLUDE_DIR="${PREFIX}/include/libpng16/" \
+    -DPNG_LIBRARY="${PREFIX}/lib/libqtlibpng_arm64-v8a.a" \
+    -DICONV_LIBRARY=/opt/android/prefix/lib/libiconv.a \
+    -DICONV_INCLUDE_DIR=/opt/android/prefix/include/ \
+    -DCMAKE_INSTALL_PREFIX="${PREFIX}" && \
+    make -j$THREADS && \
+    make -j$THREADS install && \
+    rm -rf $(pwd)
+
+RUN ls -al && uname -a
+
+# @TODO: switch to Release
+CMD set -ex \
+    && cd /wowlet \
+    && mkdir -p build/Android/release \
+    && cd build/Android/release \
+    && E=1 cmake \
+    -DCMAKE_TOOLCHAIN_FILE="${ANDROID_NDK_ROOT}/build/cmake/android.toolchain.cmake" \
+    -DCMAKE_PREFIX_PATH="${PREFIX}" \
+    -DCMAKE_FIND_ROOT_PATH="${PREFIX}" \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DARCH="armv8-a" \
+    -DANDROID_NATIVE_API_LEVEL=${ANDROID_NATIVE_API_LEVEL} \
+    -DANDROID_ABI="arm64-v8a" \
+    -DANDROID_TOOLCHAIN=clang \
+    -DBoost_USE_STATIC_RUNTIME=ON \
+    -DLRELEASE_PATH="${PREFIX}/bin" \
+    -DQT_ANDROID_APPLICATION_BINARY="wowlet" \
+    -DWITH_SCANNER=ON \
+    -DUSE_DEVICE_TREZOR=OFF \
+    -DUSE_SINGLE_BUILDDIR=ON \
+    -DMANUAL_SUBMODULES=1 \
+    -DUSE_SINGLE_BUILDDIR=ON \
+    -DQML=ON \
+    -DANDROID=ON \
+    ../../.. \
+    && PATH=${HOST_PATH} make generate_translations_header \
+    && make -j${THREADS} -C src \
+    && make -j${THREADS} apk
--- a/docs/HACKING.md
+++ b/docs/HACKING.md
@ -28,7 +28,7 @@ by running this command: `pandoc wowlet.1.md -s -t man -o wowlet.1 && gzip wowle
 apt install -y git cmake libqrencode-dev build-essential cmake libboost-all-dev \
 miniupnpc libunbound-dev graphviz doxygen libunwind8-dev pkg-config libssl-dev \
 libzmq3-dev libsodium-dev libhidapi-dev libnorm-dev libusb-1.0-0-dev libpgm-dev \
-libprotobuf-dev protobuf-compiler libgcrypt20-dev
+libprotobuf-dev protobuf-compiler libgcrypt20-dev libpng-dev
 ```

 ## Mac OS
@ -107,6 +107,4 @@ To skip the wizards and open a wallet directly use `--wallet-file`:
 ./wowlet --use-local-tor --wallet-file /home/user/Wownero/wallets/bla.keys
 ```

-It is recommended that you use `--stagenet` for development. Testnet is also possible, 
-but you'll have to provide Wownero a testnet node of your own.
 
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@ -57,6 +57,15 @@ if(OPENVR)
    list(APPEND SOURCE_FILES ${SOURCE_FILES_QML})
 endif()

+if(ANDROID OR ANDROID_DEBUG)
+    qt5_add_resources(RESOURCES mobile/qml.qrc)
+    file(GLOB SOURCE_FILES_QML
+            "mobile/*.h"
+            "mobile/*.cpp"
+            )
+    list(APPEND SOURCE_FILES ${SOURCE_FILES_QML})
+endif()
+
 set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -Wno-deprecated-declarations")  # @TODO: removeme

 add_subdirectory(libwalletqt)
@ -98,11 +107,16 @@ if(APPLE)
    list(APPEND RESOURCES ${ICON})
 endif()

-add_executable(wowlet ${EXECUTABLE_FLAG} main.cpp
+if(NOT ANDROID)
+    add_executable(wowlet ${EXECUTABLE_FLAG} main.cpp
            ${SOURCE_FILES}
            ${RESOURCES}
            ${ASSETS_TOR}
-)
+            )
+else()
+    add_library(wowlet SHARED ${SOURCE_FILES} ${RESOURCES})
+    set_target_properties(wowlet PROPERTIES COMPILE_DEFINITIONS "ANDROID")
+endif()

 # mac os bundle
 set_target_properties(wowlet PROPERTIES
@ -162,6 +176,14 @@ if(XMRIG)
    target_compile_definitions(wowlet PRIVATE HAS_XMRIG=1)
 endif()

+if(ANDROID)
+    target_compile_definitions(wowlet PRIVATE HAS_ANDROID=1)
+endif()
+
+if(ANDROID_DEBUG)
+    target_compile_definitions(wowlet PRIVATE HAS_ANDROID_DEBUG=1)
+endif()
+
 if(OPENVR)
    target_compile_definitions(wowlet PRIVATE HAS_OPENVR=1)
    target_compile_definitions(wowlet PUBLIC VR_API_PUBLIC)
@ -220,6 +242,13 @@ else()
    target_link_libraries(wowlet PUBLIC monero-seed::monero-seed)
 endif()

+if(ANDROID)
+    # yolo some hardcoded paths
+    target_include_directories(wowlet PUBLIC
+            /opt/android/prefix/include/QtAndroidExtras/
+            )
+endif()
+
 # Link Wownero core libraries
 target_link_libraries(wowlet PUBLIC
        wallet_merged
@ -261,6 +290,33 @@ else()
            Qt5::WebSockets)
 endif()

+if(ANDROID)
+    # yolo some hardcoded paths
+    target_link_libraries(wowlet PUBLIC
+            /opt/android/prefix/lib/libQt5QuickTemplates2_arm64-v8a.so
+            /opt/android/prefix/lib/libQt5Quick_arm64-v8a.so
+            /opt/android/prefix/lib/libQt5QmlModels_arm64-v8a.so
+            /opt/android/prefix/lib/libQt5Qml_arm64-v8a.so
+            /opt/android/prefix/lib/libQt5Svg_arm64-v8a.so
+            /opt/android/prefix/lib/libQt5Widgets_arm64-v8a.so
+            /opt/android/prefix/lib/libQt5Gui_arm64-v8a.so
+            /opt/android/prefix/lib/libQt5Xml_arm64-v8a.so
+            /opt/android/prefix/lib/libQt5XmlPatterns_arm64-v8a.so
+            /opt/android/prefix/lib/libQt5Network_arm64-v8a.so
+            /opt/android/prefix/lib/libQt5Core_arm64-v8a.so
+            /opt/android/prefix/lib/libQt5VirtualKeyboard_arm64-v8a.so
+            /opt/android/prefix/lib/libQt5AndroidExtras_arm64-v8a.so
+            /opt/android/prefix/plugins/bearer/libplugins_bearer_qandroidbearer_arm64-v8a.so
+            GLESv2
+            log
+            z
+            jnigraphics
+            android
+            EGL
+            c++_shared
+            )
+endif()
+
 # Link random other stuff
 target_link_libraries(wowlet PUBLIC
        ${ICU_LIBRARIES}
@ -294,7 +350,7 @@ if(OPENVR)
 endif()

 if(APPLE)
-    target_link_libraries(wowlet
+    target_link_libraries(wowlet PUBLIC
            KDMacTouchBar
            )
    target_include_directories(wowlet
@ -329,3 +385,19 @@ endif()
 install(TARGETS wowlet
        DESTINATION ${CMAKE_INSTALL_PREFIX}
        )
+
+
+message(STATUS "=============================================")
+message(STATUS "VERSION_MAJOR: ${VERSION_MAJOR}")
+message(STATUS "VERSION_MINOR: ${VERSION_MINOR}")
+message(STATUS "VERSION_REVISION: ${VERSION_REVISION}")
+message(STATUS "STATIC: ${STATIC}")
+message(STATUS "Include QtQuick (QML): ${QML}")
+message(STATUS "VERSION: ${VERSION}")
+message(STATUS "Include the XMRIG tab: ${XMRIG}")
+message(STATUS "Include Valve's OpenVR library: ${OPENVR}")
+message(STATUS "This build is for Android: ${ANDROID}")
+message(STATUS "This build is for testing the Android app on desktop: ${ANDROID_DEBUG}")
+message(STATUS "TOR_BIN: ${TOR_BIN}")
+message(STATUS "DONATE_BEG: ${DONATE_BEG}")
+message(STATUS "=============================================")
--- a/src/appcontext.cpp
+++ b/src/appcontext.cpp
@ -30,77 +30,69 @@ AppContext::AppContext(QCommandLineParser *cmdargs) {
    this->cmdargs = cmdargs;
    AppContext::isQML = false;

+    // OS & env
 #if defined(Q_OS_MAC)
+    this->isMac = true;
    this->isTorSocks = qgetenv("DYLD_INSERT_LIBRARIES").indexOf("libtorsocks") >= 0;
+#elif __ANDROID__
+    this->isAndroid = true;
 #elif defined(Q_OS_LINUX)
+    this->isLinux = true;
    this->isTorSocks = qgetenv("LD_PRELOAD").indexOf("libtorsocks") >= 0;
-#elif defined(Q_OS_WIN)
-    this->isTorSocks = false;
-#endif
-
    this->isTails = TailsOS::detect();
    this->isWhonix = WhonixOS::detect();
+#elif defined(Q_OS_WIN)
+    this->isWindows = true;
+    this->isTorSocks = false;
+#endif
+    this->androidDebug = cmdargs->isSet("android-debug");

-    //Paths
+    // Paths
+    this->pathGenericData = QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation);
    this->configRoot = QDir::homePath();
-    if (isTails) { // #if defined(PORTABLE)
-        QString portablePath = []{
-            QString appImagePath = qgetenv("APPIMAGE");
-            if (appImagePath.isEmpty()) {
-                qDebug() << "Not an appimage, using currentPath()";
-                return QDir::currentPath() + "/.wowlet";
-            }
-
-            QFileInfo appImageDir(appImagePath);
-            return appImageDir.absoluteDir().path() + "/.wowlet";
-        }();
-
-
-        if (QDir().mkpath(portablePath)) {
-            this->configRoot = portablePath;
-        } else {
-            qCritical() << "Unable to create portable directory: " << portablePath;
-        }
-    }
-
    this->accountName = Utils::getUnixAccountName();
    this->homeDir = QDir::homePath();

+    this->configDirectory = QString("%1/.config/wowlet/").arg(this->configRoot);
+    this->configDirectoryVR = QString("%1%2").arg(this->configDirectory, "vr");
+
+    if (isTails) this->setupPathsTails();
+
    QString walletDir = config()->get(Config::walletDirectory).toString();
-    if (walletDir.isEmpty()) {
-#if defined(Q_OS_LINUX) or defined(Q_OS_MAC)
-        this->defaultWalletDir = QString("%1/Wownero/wallets").arg(this->configRoot);
-        this->defaultWalletDirRoot = QString("%1/Wownero").arg(this->configRoot);
-#elif defined(Q_OS_WIN)
-        this->defaultWalletDir = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation) + "/Wownero";
-        this->defaultWalletDirRoot = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation);
-#endif
+    if(walletDir.isEmpty()) {
+        if (isAndroid && !androidDebug) setupPathsAndroid();
+        else if (isWindows) setupPathsWindows();
+        else if (isLinux || isMac) setupPathsUnix();
    } else {
        this->defaultWalletDir = walletDir;
        this->defaultWalletDirRoot = walletDir;
    }

+#ifdef __ANDROID__
+    // can haz disk I/O?
+    QVector<QString> perms = {
+        "android.permission.WRITE_EXTERNAL_STORAGE",
+        "android.permission.READ_EXTERNAL_STORAGE"
+    };
+    Utils::androidAskPermissions(perms);
+#endif
+
    // Create wallet dirs
+    qDebug() << "creating " << defaultWalletDir;
    if (!QDir().mkpath(defaultWalletDir))
        qCritical() << "Unable to create dir: " << defaultWalletDir;

-    this->configDirectory = QString("%1/.config/wowlet/").arg(this->configRoot);
-#if defined(Q_OS_UNIX)
-    if(!this->configDirectory.endsWith('/'))
-        this->configDirectory = QString("%1/").arg(this->configDirectory);
-#endif
-    this->configDirectoryVR = QString("%1%2").arg(this->configDirectory, "vr");
-
    // Create some directories
    createConfigDirectory(this->configDirectory);
-
-//    if(this->cmdargs->isSet("stagenet"))
-//        this->networkType = NetworkType::STAGENET;
-//    else if(this->cmdargs->isSet("testnet"))
-//        this->networkType = NetworkType::TESTNET;
-//    else
    this->networkType = NetworkType::MAINNET;

+    qDebug() << "configRoot: " << this->configRoot;
+    qDebug() << "homeDir: " << this->homeDir;
+    qDebug() << "customWalletDir: " << walletDir;
+    qDebug() << "defaultWalletDir: " << this->defaultWalletDir;
+    qDebug() << "defaultWalletDirRoot: " << this->defaultWalletDirRoot;
+    qDebug() << "configDirectory: " << this->configDirectory;
+
 //    auto nodeSourceUInt = config()->get(Config::nodeSource).toUInt();
 //    AppContext::nodeSource = static_cast<NodeSource>(nodeSourceUInt);
    this->nodes = new Nodes(this, this->networkClearnet);
@ -558,12 +550,14 @@ void AppContext::createConfigDirectory(const QString &dir) {
        }
    }

+#ifdef HAS_OPENVR
    auto config_dir_vr = QString("%1%2").arg(dir, "vr");
    if(!Utils::dirExists(config_dir_vr)) {
        qDebug() << QString("Creating directory: %1").arg(config_dir_vr);
        if (!QDir().mkpath(config_dir_vr))
            throw std::runtime_error("Could not create directory " + config_dir_vr.toStdString());
    }
+#endif
 }

 void AppContext::createWalletWithoutSpecifyingSeed(const QString &name, const QString &password) {
@ -949,3 +943,38 @@ void AppContext::refreshModels() {
    this->currentWallet->coins()->refresh(this->currentWallet->currentSubaddressAccount());
    // Todo: set timer for refreshes
 }
+
+void AppContext::setupPathsUnix() {
+    this->defaultWalletDir = QString("%1/Wownero/wallets").arg(this->configRoot);
+    this->defaultWalletDirRoot = QString("%1/Wownero").arg(this->configRoot);
+}
+
+void AppContext::setupPathsWindows() {
+    this->defaultWalletDir = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation) + "/Wownero";
+    this->defaultWalletDirRoot = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation);
+}
+
+void AppContext::setupPathsAndroid() {
+    this->defaultWalletDir = QString("%1/Wownero/wallets").arg(this->pathGenericData);
+    this->defaultWalletDirRoot = QString("%1/Wownero").arg(this->pathGenericData);
+}
+
+void AppContext::setupPathsTails() {
+    QString portablePath = []{
+        QString appImagePath = qgetenv("APPIMAGE");
+        if (appImagePath.isEmpty()) {
+            qDebug() << "Not an appimage, using currentPath()";
+            return QDir::currentPath() + "/.wowlet";
+        }
+
+        QFileInfo appImageDir(appImagePath);
+        return appImageDir.absoluteDir().path() + "/.wowlet";
+    }();
+
+    if (QDir().mkpath(portablePath)) {
+        this->configRoot = portablePath;
+    } else {
+        qCritical() << "Unable to create portable directory: " << portablePath;
+    }
+}
+
--- a/src/appcontext.h
+++ b/src/appcontext.h
@ -39,7 +39,12 @@ public:
    ~AppContext() override;
    bool isTails = false;
    bool isWhonix = false;
+    bool isAndroid = false;
+    bool isLinux = false;
+    bool isMac = false;
+    bool isWindows = false;
    bool isDebug = false;
+    bool androidDebug = false;

    // Donation config
    const QString donationAddress = "Wo3MWeKwtA918DU4c69hVSNgejdWFCRCuWjShRY66mJkU2Hv58eygJWDJS1MNa2Ge5M1WjUkGHuLqHkweDxwZZU42d16v94mP";
@ -50,6 +55,7 @@ public:

    QString coinName = "wownero";
    bool isTorSocks = false;
+    QString pathGenericData;
    QString homeDir;
    QString accountName;
    QString configRoot;
@ -215,6 +221,11 @@ private:
    WalletKeysFilesModel *m_walletKeysFilesModel;
    const int m_donationBoundary = 15;
    QTimer m_storeTimer;
+
+    void setupPathsUnix();
+    void setupPathsWindows();
+    void setupPathsAndroid();
+    void setupPathsTails();
 };

 #endif //WOWLET_APPCONTEXT_H
--- a/src/libwalletqt/Wallet.cpp
+++ b/src/libwalletqt/Wallet.cpp
@ -1,6 +1,8 @@
 // SPDX-License-Identifier: BSD-3-Clause
 // Copyright (c) 2014-2021, The Monero Project.

+#include <thread>
+
 #include "Wallet.h"

 #include "TransactionHistory.h"
--- a/src/main.cpp
+++ b/src/main.cpp
@ -14,6 +14,12 @@
 #include "vr/main.h"
 #endif

+#ifdef HAS_ANDROID_DEBUG
+#include "mobile/main.h"
+#elif HAS_ANDROID
+#include "mobile/main.h"
+#endif
+
 #if defined(Q_OS_WIN)
 #include <windows.h>
 #endif
@ -44,6 +50,10 @@ if (AttachConsole(ATTACH_PARENT_PROCESS)) {
        argv_ << QString::fromStdString(argv[i]);
    }

+    QCoreApplication::setApplicationName("wowlet");
+    QCoreApplication::setOrganizationDomain("wownero.org");
+    QCoreApplication::setOrganizationName("wownero.org");
+
    QCommandLineParser parser;
    parser.setApplicationDescription("wowlet");
    parser.addHelpOption();
@ -91,9 +101,12 @@ if (AttachConsole(ATTACH_PARENT_PROCESS)) {
    QCommandLineOption openVROption(QStringList() << "openvr", "Start Wowlet OpenVR");
    parser.addOption(openVROption);

-    QCommandLineOption openVRDebugOption(QStringList() << "openvr-debug", "Start the Wowlet VR interface without initializing OpenVR - for debugging purposes.");
+    QCommandLineOption openVRDebugOption(QStringList() << "openvr-debug", "Start the Wowlet VR interface without initializing OpenVR - for debugging purposes. Requires -DOPENVR=ON CMake definition.");
    parser.addOption(openVRDebugOption);

+    QCommandLineOption androidDebugOption(QStringList() << "android-debug", "Start the Android interface without actually running on Android - for debugging purposes. Requires -DANDROID_DEBUG=ON CMake definition.");
+    parser.addOption(androidDebugOption);
+
    auto parsed = parser.parse(argv_);
    if(!parsed) {
        qCritical() << parser.errorText();
@ -111,13 +124,29 @@ if (AttachConsole(ATTACH_PARENT_PROCESS)) {
    bool backgroundAddressEnabled = parser.isSet(backgroundOption);
    bool openVREnabled = parser.isSet(openVROption);
    bool cliMode = exportContacts || exportTxHistory || backgroundAddressEnabled;
-
+    bool androidDebug = parser.isSet(androidDebugOption);
+    bool android = false;
+#ifdef __ANDROID__
+    android = true;
+#endif
    qRegisterMetaType<QVector<QString>>();

 #ifdef HAS_QML
    qputenv("QML_DISABLE_DISK_CACHE", "1");
 #endif

+    if(android || androidDebug) {
+#ifndef HAS_QML
+        qCritical() << "Wowlet compiled without QML support. Try -DQML=ON";
+        return 1;
+#endif
+        QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+        QGuiApplication mobile_app(argc, argv);
+        auto *ctx = new AppContext(&parser);
+        auto *mobile = new mobile::Mobile(ctx, &parser, &mobile_app);
+        return mobile_app.exec();
+    }
+
    if(openVREnabled) {
 #ifdef HAS_OPENVR
        QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
@ -138,9 +167,6 @@ if (AttachConsole(ATTACH_PARENT_PROCESS)) {
    if(cliMode) {
        auto *ctx = new AppContext(&parser);
        QCoreApplication cli_app(argc, argv);
-        QCoreApplication::setApplicationName("wowlet");
-        QCoreApplication::setOrganizationDomain("wownero.org");
-        QCoreApplication::setOrganizationName("wownero.org");

        ctx->applicationPath = QString(argv[0]);
        ctx->isDebug = debugMode;
@ -191,10 +217,6 @@ if (AttachConsole(ATTACH_PARENT_PROCESS)) {

    QApplication app(argc, argv);

-    QApplication::setApplicationName("wowlet");
-    QApplication::setOrganizationDomain("wownero.org");
-    QApplication::setOrganizationName("wownero.org");
-
    parser.process(app); // Parse again for --help and --version

    if(!quiet) {
@ -204,8 +226,10 @@ if (AttachConsole(ATTACH_PARENT_PROCESS)) {
        if (stagenet) info["Mode"] = "Stagenet";
        else if (testnet) info["Mode"] = "Testnet";
        else info["Mode"] = "Mainnet";
+#ifndef QT_NO_SSL
        info["SSL"] = QSslSocket::sslLibraryVersionString();
        info["SSL build"] = QSslSocket::sslLibraryBuildVersionString();
+#endif
        for (const auto &k: info.keys())
            qWarning().nospace().noquote() << QString("%1: %2").arg(k).arg(info[k]);
    }
--- a/src/mobile/README.md
+++ b/src/mobile/README.md
@ -0,0 +1,45 @@
+# Wowlet Mobile (Android)
+
+This directory contains an unfinished QML application that will show:
+
+![https://i.imgur.com/yhCsSgj.jpg](https://i.imgur.com/yhCsSgj.jpg)
+
+## Building
+
+Credits go to Monero GUI team for providing the initial work on Qt5+Android.
+
+Build a Docker image:
+
+```bash
+docker build --tag wowlet:android --build-arg THREADS=14 --file Dockerfile.android .
+```
+
+Building Wowlet for arm64-v8a:
+
+```Bash
+docker run --rm -it -v $PWD:/wowlet -w /wowlet -e THREADS=6 wowlet:android
+```
+
+Installing the resulting `.apk` on your device:
+
+```bash
+adb install build/Android/release/android-build//build/outputs/apk/debug/android-build-debug.apk
+```
+
+Viewing debug logs:
+
+```bash
+adb logcat | grep --line-buffered "D wowlet"
+```
+
+# Development
+
+To show this on desktop, you will need the following CMake definitions:
+
+`-DANDROID_DEBUG=ON -DWITH_SCANNER=ON`
+
+Start wowlet with the `--android-debug` flag:
+
+```bash
+./wowlet --android-debug
+```
--- a/src/mobile/main.cpp
+++ b/src/mobile/main.cpp
@ -0,0 +1,102 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright (c) 2020-2021, The Monero Project.
+
+#include <iostream>
+#include <QResource>
+#include <QApplication>
+#include <QCoreApplication>
+#include <QQmlComponent>
+#include <QObject>
+#include <QtCore>
+#include <QtGui>
+#include <QQmlApplicationEngine>
+#include <QtQml>
+#include <QFileInfo>
+#include <QQuickView>
+#include <QQuickItem>
+
+#include "libwalletqt/TransactionInfo.h"
+#include "libwalletqt/TransactionHistory.h"
+#include "model/TransactionHistoryModel.h"
+#include "model/TransactionHistoryProxyModel.h"
+#include "libwalletqt/WalletManager.h"
+
+#include "utils/keysfiles.h"
+#include "mobile/main.h"
+
+namespace mobile {
+
+    Mobile::Mobile(AppContext *ctx, QCommandLineParser *parser, QObject *parent) :
+            QObject(parent), ctx(ctx), m_parser(parser) {
+        AppContext::isQML = true;
+        m_pClipboard = QGuiApplication::clipboard();
+        desktopMode = true;
+
+        // turn on auto tx commits
+        ctx->autoCommitTx = true;
+
+        // QR code scanning from screenshots
+        m_qrScreenshotPreviewPath = ctx->configDirectoryVR + "/screenshot_preview";
+        m_qrScreenshotImagePath = ctx->configDirectoryVR + "/screenshot";
+        m_qrScreenshotTimer.setSingleShot(true);
+
+        qDebug() << "QMLSCENE_DEVICE: " << qgetenv("QMLSCENE_DEVICE");
+
+        m_engine.rootContext()->setContextProperty("homePath", QDir::homePath());
+        m_engine.rootContext()->setContextProperty("applicationDirectory", QApplication::applicationDirPath());
+        m_engine.rootContext()->setContextProperty("idealThreadCount", QThread::idealThreadCount());
+        m_engine.rootContext()->setContextProperty("qtRuntimeVersion", qVersion());
+        m_engine.rootContext()->setContextProperty("ctx", ctx);
+
+        m_engine.rootContext()->setContextProperty("Mobile", this);
+        qRegisterMetaType<NetworkType::Type>();
+        qmlRegisterType<NetworkType>("wowlet.NetworkType", 1, 0, "NetworkType");
+
+        qmlRegisterUncreatableType<WalletKeysFiles>("wowlet.WalletKeysFiles", 1, 0, "WalletKeysFiles", "WalletKeysFiles can't be instantiated directly");
+        qmlRegisterUncreatableType<Wallet>("wowlet.Wallet", 1, 0, "Wallet", "Wallet can't be instantiated directly");
+        qmlRegisterType<WalletManager>("wowlet.WalletManager", 1, 0, "WalletManager");
+
+        qmlRegisterUncreatableType<TransactionHistoryProxyModel>("wowlet.TransactionHistoryProxyModel", 1, 0, "TransactionHistoryProxyModel", "TransactionHistoryProxyModel can't be instantiated directly");
+        qmlRegisterUncreatableType<TransactionHistoryModel>("wowlet.TransactionHistoryModel", 1, 0, "TransactionHistoryModel", "TransactionHistoryModel can't be instantiated directly");
+        qmlRegisterUncreatableType<TransactionInfo>("wowlet.TransactionInfo", 1, 0, "TransactionInfo", "TransactionHistory can't be instantiated directly");
+        qmlRegisterUncreatableType<TransactionHistory>("wowlet.TransactionHistory", 1, 0, "TransactionHistory", "TransactionHistory can't be instantiated directly");
+
+        qRegisterMetaType<PendingTransaction::Priority>();
+        qRegisterMetaType<TransactionInfo::Direction>();
+        qRegisterMetaType<TransactionHistoryModel::TransactionInfoRole>();
+
+        auto widgetUrl = QUrl(QStringLiteral("qrc:///main"));
+        m_engine.load(widgetUrl);
+        if (m_engine.rootObjects().isEmpty())
+        {
+            qCritical() << "Error: no root objects";
+            return;
+        }
+        QObject *rootObject = m_engine.rootObjects().first();
+        if (!rootObject)
+        {
+            qCritical() << "Error: no root objects";
+            return;
+        }
+
+
+        int wege = 1;
+    }
+
+    void Mobile::takeQRScreenshot() {
+
+    }
+
+    void Mobile::onCheckQRScreenshot() {
+
+    }
+
+    QString Mobile::checkQRScreenshotResults(std::vector<std::string> results) {
+
+    }
+
+    Mobile::~Mobile() {
+        // bla
+        int wegeg = 1;
+    }
+}
--- a/src/mobile/main.h
+++ b/src/mobile/main.h
@ -0,0 +1,92 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright (c) 2020-2021, The Monero Project.
+
+#ifndef WOWLET_MAIN_H
+#define WOWLET_MAIN_H
+
+#include <QtCore>
+#include <QQmlError>
+#include <QQmlApplicationEngine>
+#include <QtQml>
+#include <QGuiApplication>
+#include <QClipboard>
+#include <QTimer>
+#include <globals.h>
+
+#include "appcontext.h"
+#include "utils/config.h"
+#include "QR-Code-scanner/Decoder.h"
+
+namespace mobile {
+
+    class Mobile : public QObject {
+        Q_OBJECT
+    public:
+        explicit Mobile(AppContext *ctx, QCommandLineParser *cmdargs, QObject *parent = nullptr);
+        ~Mobile() override;
+
+        QList<QQmlError> errors;
+
+        Q_INVOKABLE double cdiv(double amount) { return amount / globals::cdiv; }
+        Q_INVOKABLE double add(double x, double y) const { return Utils::roundUp(x + y, 4); }  // round ceil 4 decimals
+        Q_INVOKABLE double sub(double x, double y) const { return Utils::roundUp(x - y, 4); }  // round ceil 4 decimals
+
+        Q_INVOKABLE void onCreateTransaction(const QString &address, const QString &amount_str, const QString description, bool all) {
+            auto amount = WalletManager::amountFromString(amount_str);
+            ctx->onCreateTransaction(address, amount, description, false);
+        }
+
+        Q_INVOKABLE void setClipboard(const QString &text) {
+            m_pClipboard->setText(text, QClipboard::Clipboard);
+            m_pClipboard->setText(text, QClipboard::Selection);
+        }
+
+        Q_INVOKABLE QString preferredFiat() {
+            return config()->get(Config::preferredFiatCurrency).toString();
+        }
+
+        Q_INVOKABLE QString fiatToWow(double amount) {
+            auto preferredFiatCurrency = config()->get(Config::preferredFiatCurrency).toString();
+            if (amount <= 0) return QString("0.00");
+
+            double conversionAmount = AppContext::prices->convert(preferredFiatCurrency, "WOW", amount);
+            return QString("%1").arg(QString::number(conversionAmount, 'f', 2));
+        }
+
+        Q_INVOKABLE QString wowToFiat(double amount) {
+            auto preferredFiatCurrency = config()->get(Config::preferredFiatCurrency).toString();
+            if (amount <= 0) return QString("0.00");
+
+            double conversionAmount = AppContext::prices->convert("WOW", preferredFiatCurrency, amount);
+            if(conversionAmount <= 0) return QString("0.00");
+            return QString("~%1").arg(QString::number(conversionAmount, 'f', 2));
+        }
+
+        Q_INVOKABLE void takeQRScreenshot();
+
+        signals:
+            void qrScreenshotFailed(QString error);
+        void qrScreenshotSuccess(QString address);
+
+    private slots:
+        void onCheckQRScreenshot();
+
+    private:
+        AppContext *ctx;
+        QQmlApplicationEngine m_engine;
+
+        bool desktopMode = false;
+        QString m_qrScreenshotPreviewPath;
+        QString m_qrScreenshotImagePath;
+
+        QCommandLineParser *m_parser;
+        QClipboard *m_pClipboard;
+        QTimer m_qrScreenshotTimer;
+        QrDecoder m_qrDecoder;
+
+        static QString checkQRScreenshotResults(std::vector<std::string> results);
+    };
+
+}
+
+#endif //WOWLET_MAIN_H
--- a/src/mobile/main.qml
+++ b/src/mobile/main.qml
@ -0,0 +1,35 @@
+import QtQuick 2.7
+import QtQuick.Controls 2.0
+import QtQuick.Layouts 1.2
+import QtGraphicalEffects 1.0
+import QtQuick.Window 2.0
+import QtQuick.Controls.Styles 1.4
+import QtQuick.Dialogs 1.2
+import QtGraphicalEffects 1.0
+
+import "."
+
+import wowlet.Wallet 1.0
+import wowlet.WalletManager 1.0
+
+ApplicationWindow {
+    visible: true
+    id: appWindow
+    width: 1080
+    height: 2400
+    color: "#2C3539"
+
+    MouseArea {
+        anchors.fill: parent
+        onClicked: {
+            Qt.quit();
+        }
+    }
+
+    Text {
+        text: "Wowlet"
+        color: "white"
+        anchors.centerIn: parent
+        font.pointSize: 62
+    }
+}
--- a/src/mobile/qml.qrc
+++ b/src/mobile/qml.qrc
@ -0,0 +1,5 @@
+<!DOCTYPE RCC><RCC version="1.0">
+    <qresource prefix="/">
+        <file alias="main">main.qml</file>
+    </qresource>
+</RCC>
--- a/src/utils/utils.cpp
+++ b/src/utils/utils.cpp
@ -256,11 +256,14 @@ QStandardItem *Utils::qStandardItem(const QString& text, QFont &font) {
 }

 QString Utils::getUnixAccountName() {
+#ifdef __ANDROID__
+    return "";
+#endif
    QString accountName = qgetenv("USER"); // mac/linux
    if (accountName.isEmpty())
        accountName = qgetenv("USERNAME"); // Windows
    if (accountName.isEmpty())
-        throw std::runtime_error("Could derive system account name from env vars: USER or USERNAME");
+        throw std::runtime_error("Could not derive system account name from env vars: USER or USERNAME");
    return accountName;
 }

@ -455,3 +458,26 @@ QTextCharFormat Utils::addressTextFormat(const SubaddressIndex &index) {
    }
    return QTextCharFormat();
 }
+
+#ifdef __ANDROID__
+bool Utils::androidAskPermissions(const QVector<QString> &permissions) {
+    bool rtn = true;
+    if(QtAndroid::androidSdkVersion() >= 23) {
+        for(const QString &permission : permissions) {
+            auto result = QtAndroid::checkPermission(permission);
+            if(result != QtAndroid::PermissionResult::Granted) {
+                auto resultHash = QtAndroid::requestPermissionsSync(QStringList({permission}));
+                if(resultHash[permission] != QtAndroid::PermissionResult::Granted) {
+                    qDebug() << "Fail to get permission" << permission;
+                    rtn = false;
+                } else {
+                    qDebug() << "Permission" << permission << "granted!";
+                }
+            } else {
+                qDebug() << "Permission" << permission << "already granted!";
+            }
+        }
+    }
+    return rtn;
+}
+#endif
--- a/src/utils/utils.h
+++ b/src/utils/utils.h
@ -8,6 +8,9 @@
 #include <QStandardItemModel>
 #include <QApplication>
 #include <QTextCharFormat>
+#ifdef __ANDROID__
+#include <QtAndroid>
+#endif

 #include <monero_seed/monero_seed.hpp>

@ -80,10 +83,13 @@ public:
    static QTextCharFormat addressTextFormat(const SubaddressIndex &index);

    template<typename QEnum>
-    static QString QtEnumToString (const QEnum value)
-    {
+    static QString QtEnumToString (const QEnum value) {
        return QString::fromStdString(std::string(QMetaEnum::fromType<QEnum>().valueToKey(value)));
    }
+
+#ifdef __ANDROID__
+    static bool androidAskPermissions(const QVector<QString> &permissions);
+#endif
 };

 class AppContext;  // forward declaration