build, test, doc: Temporarily remove Android-related stuff

Previously, our Android builds were geared towards generating APKs, which relied on Qt. However, after migrating to C++20, compiling for Android became unfeasible due to Qt 5.15's compatibility limitations with NDK only up to r25, which includes an outdated embedded libc++. All removed stuff will be reinstated after migrating the build system to CMake and upgrading Qt to version 6.x."
2025-03-05 14:06:27 -05:00 · 2024-05-03 10:28:01 +01:00 · 2024-05-03 10:28:01 +01:00 · 5deb0b024e
commit 5deb0b024e
parent 00ac1b963d
27 changed files with 4 additions and 329 deletions
--- a/build-aux/m4/bitcoin_qt.m4
+++ b/build-aux/m4/bitcoin_qt.m4
@ -70,8 +70,6 @@ AC_DEFUN([BITCOIN_QT_INIT],[
                 [qt_lib_suffix= ]); bitcoin_qt_want_version=qt5],
        [qt_lib_suffix= ])

-  AS_CASE([$host], [*android*], [qt_lib_suffix=_$ANDROID_ARCH])
-
  AC_ARG_WITH([qt-incdir],[AS_HELP_STRING([--with-qt-incdir=INC_DIR],[specify qt include path (overridden by pkgconfig)])], [qt_include_path=$withval], [])
  AC_ARG_WITH([qt-libdir],[AS_HELP_STRING([--with-qt-libdir=LIB_DIR],[specify qt lib path (overridden by pkgconfig)])], [qt_lib_path=$withval], [])
  AC_ARG_WITH([qt-plugindir],[AS_HELP_STRING([--with-qt-plugindir=PLUGIN_DIR],[specify qt plugin path (overridden by pkgconfig)])], [qt_plugin_path=$withval], [])
@ -80,19 +78,10 @@ AC_DEFUN([BITCOIN_QT_INIT],[

  AC_ARG_WITH([qtdbus],
    [AS_HELP_STRING([--with-qtdbus],
-    [enable DBus support (default is yes if qt is enabled and QtDBus is found, except on Android)])],
+    [enable DBus support (default is yes if qt is enabled and QtDBus is found)])],
    [use_dbus=$withval],
    [use_dbus=auto])

-  dnl Android doesn't support D-Bus and certainly doesn't use it for notifications
-  case $host in
-    *android*)
-      if test "$use_dbus" != "yes"; then
-        use_dbus=no
-      fi
-    ;;
-  esac
-
  AC_SUBST(QT_TRANSLATION_DIR,$qt_translation_path)
 ])

@ -132,16 +121,11 @@ AC_DEFUN([BITCOIN_QT_CONFIGURE],[
      if test -d "$qt_plugin_path/accessible"; then
        QT_LIBS="$QT_LIBS -L$qt_plugin_path/accessible"
      fi
-      if test -d "$qt_plugin_path/platforms/android"; then
-        QT_LIBS="$QT_LIBS -L$qt_plugin_path/platforms/android -lqtfreetype -lEGL"
-      fi
    fi

    AC_DEFINE([QT_STATICPLUGIN], [1], [Define this symbol if qt plugins are static])
-    if test "$TARGET_OS" != "android"; then
-      _BITCOIN_QT_CHECK_STATIC_PLUGIN([QMinimalIntegrationPlugin], [-lqminimal])
-      AC_DEFINE([QT_QPA_PLATFORM_MINIMAL], [1], [Define this symbol if the minimal qt platform exists])
-    fi
+    _BITCOIN_QT_CHECK_STATIC_PLUGIN([QMinimalIntegrationPlugin], [-lqminimal])
+    AC_DEFINE([QT_QPA_PLATFORM_MINIMAL], [1], [Define this symbol if the minimal qt platform exists])
    if test "$TARGET_OS" = "windows"; then
      dnl Linking against wtsapi32 is required. See #17749 and
      dnl https://bugreports.qt.io/browse/QTBUG-27097.
@ -160,9 +144,6 @@ AC_DEFUN([BITCOIN_QT_CONFIGURE],[
      _BITCOIN_QT_CHECK_STATIC_PLUGIN([QCocoaIntegrationPlugin], [-lqcocoa])
      _BITCOIN_QT_CHECK_STATIC_PLUGIN([QMacStylePlugin], [-lqmacstyle])
      AC_DEFINE([QT_QPA_PLATFORM_COCOA], [1], [Define this symbol if the qt platform is cocoa])
-    elif test "$TARGET_OS" = "android"; then
-      QT_LIBS="-Wl,--export-dynamic,--undefined=JNI_OnLoad -lplugins_platforms_qtforandroid${qt_lib_suffix} -ljnigraphics -landroid -lqtfreetype${qt_lib_suffix} $QT_LIBS"
-      AC_DEFINE([QT_QPA_PLATFORM_ANDROID], [1], [Define this symbol if the qt platform is android])
    fi
  fi
  CPPFLAGS=$TEMP_CPPFLAGS
@ -357,9 +338,6 @@ AC_DEFUN([_BITCOIN_QT_CHECK_STATIC_LIBS], [
    PKG_CHECK_MODULES([QT_SERVICE], [${qt_lib_prefix}ServiceSupport${qt_lib_suffix}], [QT_LIBS="$QT_SERVICE_LIBS $QT_LIBS"])
  elif test "$TARGET_OS" = "windows"; then
    PKG_CHECK_MODULES([QT_WINDOWSUIAUTOMATION], [${qt_lib_prefix}WindowsUIAutomationSupport${qt_lib_suffix}], [QT_LIBS="$QT_WINDOWSUIAUTOMATION_LIBS $QT_LIBS"])
-  elif test "$TARGET_OS" = "android"; then
-    PKG_CHECK_MODULES([QT_EGL], [${qt_lib_prefix}EglSupport${qt_lib_suffix}], [QT_LIBS="$QT_EGL_LIBS $QT_LIBS"])
-    PKG_CHECK_MODULES([QT_SERVICE], [${qt_lib_prefix}ServiceSupport${qt_lib_suffix}], [QT_LIBS="$QT_SERVICE_LIBS $QT_LIBS"])
  fi
 ])

--- a/ci/test/00_setup_env_android.sh
+++ b/ci/test/00_setup_env_android.sh
@ -1,25 +0,0 @@
-#!/usr/bin/env bash
-#
-# Copyright (c) 2019-present The Bitcoin Core developers
-# Distributed under the MIT software license, see the accompanying
-# file COPYING or http://www.opensource.org/licenses/mit-license.php.
-
-export LC_ALL=C.UTF-8
-
-export HOST=aarch64-linux-android
-export PACKAGES="unzip openjdk-8-jdk gradle"
-export CONTAINER_NAME=ci_android
-export CI_IMAGE_NAME_TAG="docker.io/amd64/ubuntu:22.04"
-
-export RUN_UNIT_TESTS=false
-export RUN_FUNCTIONAL_TESTS=false
-
-export ANDROID_API_LEVEL=28
-export ANDROID_BUILD_TOOLS_VERSION=28.0.3
-export ANDROID_NDK_VERSION=23.2.8568313
-export ANDROID_TOOLS_URL=https://dl.google.com/android/repository/commandlinetools-linux-8512546_latest.zip
-export ANDROID_HOME="${DEPENDS_DIR}/SDKs/android"
-export ANDROID_NDK_HOME="${ANDROID_HOME}/ndk/${ANDROID_NDK_VERSION}"
-export DEP_OPTS="ANDROID_SDK=${ANDROID_HOME} ANDROID_NDK=${ANDROID_NDK_HOME} ANDROID_API_LEVEL=${ANDROID_API_LEVEL} ANDROID_TOOLCHAIN_BIN=${ANDROID_NDK_HOME}/toolchains/llvm/prebuilt/linux-x86_64/bin/"
-
-export BITCOIN_CONFIG="--disable-tests --enable-gui-tests --disable-bench --disable-fuzz-binary --without-utils --without-libs --without-daemon"
--- a/ci/test/01_base_install.sh
+++ b/ci/test/01_base_install.sh
@ -86,14 +86,4 @@ if [ -n "$XCODE_VERSION" ] && [ ! -d "${DEPENDS_DIR}/SDKs/${OSX_SDK_BASENAME}" ]
  tar -C "${DEPENDS_DIR}/SDKs" -xf "$OSX_SDK_PATH"
 fi

-if [ -n "$ANDROID_HOME" ] && [ ! -d "$ANDROID_HOME" ]; then
-  ANDROID_TOOLS_PATH=${DEPENDS_DIR}/sdk-sources/android-tools.zip
-  if [ ! -f "$ANDROID_TOOLS_PATH" ]; then
-    ${CI_RETRY_EXE} curl --location --fail "${ANDROID_TOOLS_URL}" -o "$ANDROID_TOOLS_PATH"
-  fi
-  mkdir -p "$ANDROID_HOME"
-  unzip -o "$ANDROID_TOOLS_PATH" -d "$ANDROID_HOME"
-  yes | "${ANDROID_HOME}"/cmdline-tools/bin/sdkmanager --sdk_root="${ANDROID_HOME}" --install "build-tools;${ANDROID_BUILD_TOOLS_VERSION}" "platform-tools" "platforms;android-31" "platforms;android-${ANDROID_API_LEVEL}" "ndk;${ANDROID_NDK_VERSION}"
-fi
-
 git config --global ${CFG_DONE} "true"
--- a/ci/test/02_run_container.sh
+++ b/ci/test/02_run_container.sh
@ -26,7 +26,6 @@ if [ -z "$DANGER_RUN_CI_ON_HOST" ]; then
  docker volume create "${CONTAINER_NAME}_ccache" || true
  docker volume create "${CONTAINER_NAME}_depends" || true
  docker volume create "${CONTAINER_NAME}_depends_sources" || true
-  docker volume create "${CONTAINER_NAME}_depends_SDKs_android" || true
  docker volume create "${CONTAINER_NAME}_previous_releases" || true

  if [ -n "${RESTART_CI_DOCKER_BEFORE_RUN}" ] ; then
@ -52,7 +51,6 @@ if [ -z "$DANGER_RUN_CI_ON_HOST" ]; then
                  --mount "type=volume,src=${CONTAINER_NAME}_ccache,dst=$CCACHE_DIR" \
                  --mount "type=volume,src=${CONTAINER_NAME}_depends,dst=$DEPENDS_DIR/built" \
                  --mount "type=volume,src=${CONTAINER_NAME}_depends_sources,dst=$DEPENDS_DIR/sources" \
-                  --mount "type=volume,src=${CONTAINER_NAME}_depends_SDKs_android,dst=$DEPENDS_DIR/SDKs/android" \
                  --mount "type=volume,src=${CONTAINER_NAME}_previous_releases,dst=$PREVIOUS_RELEASES_DIR" \
                  --env-file /tmp/env-$USER-$CONTAINER_NAME \
                  --name "$CONTAINER_NAME" \
--- a/ci/test/03_test_script.sh
+++ b/ci/test/03_test_script.sh
@ -110,15 +110,6 @@ fi
 ccache --zero-stats
 PRINT_CCACHE_STATISTICS="ccache --version | head -n 1 && ccache --show-stats"

-if [ -n "$ANDROID_TOOLS_URL" ]; then
-  make distclean || true
-  ./autogen.sh
-  bash -c "./configure $BITCOIN_CONFIG_ALL $BITCOIN_CONFIG" || ( (cat config.log) && false)
-  make "${MAKEJOBS}" && cd src/qt && ANDROID_HOME=${ANDROID_HOME} ANDROID_NDK_HOME=${ANDROID_NDK_HOME} make apk
-  bash -c "${PRINT_CCACHE_STATISTICS}"
-  exit 0
-fi
-
 BITCOIN_CONFIG_ALL="${BITCOIN_CONFIG_ALL} --enable-external-signer --prefix=$BASE_OUTDIR"

 if [ -n "$CONFIG_SHELL" ]; then
--- a/configure.ac
+++ b/configure.ac
@ -778,22 +778,6 @@ case $host in
     dnl "'NSUserNotificationCenter' is deprecated: first deprecated in macOS 11.0".
     OBJCXXFLAGS="$CXXFLAGS -Wno-deprecated-declarations"
     ;;
-   *android*)
-     dnl make sure android stays above linux for hosts like *linux-android*
-     TARGET_OS=android
-     case $host in
-       *x86_64*)
-          ANDROID_ARCH=x86_64
-          ;;
-        *aarch64*)
-          ANDROID_ARCH=arm64-v8a
-          ;;
-        *armv7a*)
-          ANDROID_ARCH=armeabi-v7a
-          ;;
-        *) AC_MSG_ERROR([Could not determine Android arch, or it is unsupported]) ;;
-      esac
-     ;;
   *linux*)
     TARGET_OS=linux
     ;;
@ -1789,7 +1773,6 @@ AC_SUBST(HAVE_O_CLOEXEC)
 AC_SUBST(HAVE_BUILTIN_PREFETCH)
 AC_SUBST(HAVE_MM_PREFETCH)
 AC_SUBST(HAVE_STRONG_GETAUXVAL)
-AC_SUBST(ANDROID_ARCH)
 AC_SUBST(HAVE_EVHTTP_CONNECTION_GET_PEER_CONST_CHAR)
 AC_CONFIG_FILES([Makefile src/Makefile doc/man/Makefile share/setup.nsi share/qt/Info.plist test/config.ini])
 AC_CONFIG_FILES([contrib/devtools/split-debug.sh],[chmod +x contrib/devtools/split-debug.sh])
--- a/depends/Makefile
+++ b/depends/Makefile
@ -101,10 +101,6 @@ host_os+=$(findstring netbsd,$(full_host_os))
 host_os+=$(findstring openbsd,$(full_host_os))
 host_os+=$(findstring mingw32,$(full_host_os))

-ifeq (android,$(findstring android,$(full_host_os)))
-host_os:=android
-endif
-
 host_os:=$(strip $(host_os))
 ifeq ($(host_os),)
 host_os=$(full_host_os)
--- a/depends/README.md
+++ b/depends/README.md
@ -38,11 +38,8 @@ Common `host-platform-triplet`s for cross compilation are:
 - `riscv32-linux-gnu` for Linux RISC-V 32 bit
 - `riscv64-linux-gnu` for Linux RISC-V 64 bit
 - `s390x-linux-gnu` for Linux S390X
- `armv7a-linux-android` for Android ARM 32 bit
- `aarch64-linux-android` for Android ARM 64 bit
- `x86_64-linux-android` for Android x86 64 bit

-The paths are automatically configured and no other options are needed unless targeting [Android](../doc/build-android.md).
+The paths are automatically configured and no other options are needed.

 ### Install the required dependencies: Ubuntu & Debian

--- a/depends/hosts/android.mk
+++ b/depends/hosts/android.mk
@ -1,15 +0,0 @@
-ifeq ($(HOST),armv7a-linux-android)
-android_CXX=$(ANDROID_TOOLCHAIN_BIN)/$(HOST)eabi$(ANDROID_API_LEVEL)-clang++
-android_CC=$(ANDROID_TOOLCHAIN_BIN)/$(HOST)eabi$(ANDROID_API_LEVEL)-clang
-else
-android_CXX=$(ANDROID_TOOLCHAIN_BIN)/$(HOST)$(ANDROID_API_LEVEL)-clang++
-android_CC=$(ANDROID_TOOLCHAIN_BIN)/$(HOST)$(ANDROID_API_LEVEL)-clang
-endif
-
-android_CFLAGS=-std=$(C_STANDARD)
-android_CXXFLAGS=-std=$(CXX_STANDARD)
-
-android_AR=$(ANDROID_TOOLCHAIN_BIN)/llvm-ar
-android_RANLIB=$(ANDROID_TOOLCHAIN_BIN)/llvm-ranlib
-
-android_cmake_system=Android
--- a/depends/packages/packages.mk
+++ b/depends/packages/packages.mk
@ -5,12 +5,10 @@ boost_packages = boost
 libevent_packages = libevent

 qrencode_linux_packages = qrencode
-qrencode_android_packages = qrencode
 qrencode_darwin_packages = qrencode
 qrencode_mingw32_packages = qrencode

 qt_linux_packages:=qt expat libxcb xcb_proto libXau xproto freetype fontconfig libxkbcommon libxcb_util libxcb_util_render libxcb_util_keysyms libxcb_util_image libxcb_util_wm
-qt_android_packages=qt
 qt_darwin_packages=qt
 qt_mingw32_packages=qt

--- a/depends/packages/qt.mk
+++ b/depends/packages/qt.mk
@ -12,7 +12,6 @@ $(package)_patches += qttools_src.pro
 $(package)_patches += mac-qmake.conf
 $(package)_patches += fix_qt_pkgconfig.patch
 $(package)_patches += no-xlib.patch
-$(package)_patches += fix_android_jni_static.patch
 $(package)_patches += dont_hardcode_pwd.patch
 $(package)_patches += qtbase-moc-ignore-gcc-macro.patch
 $(package)_patches += rcc_hardcode_timestamp.patch
@ -185,24 +184,6 @@ $(package)_config_opts_mingw32 += -pch
 ifneq ($(LTO),)
 $(package)_config_opts_mingw32 += -ltcg
 endif
-
-$(package)_config_opts_android = -xplatform android-clang
-$(package)_config_opts_android += -android-sdk $(ANDROID_SDK)
-$(package)_config_opts_android += -android-ndk $(ANDROID_NDK)
-$(package)_config_opts_android += -android-ndk-platform android-$(ANDROID_API_LEVEL)
-$(package)_config_opts_android += -egl
-$(package)_config_opts_android += -no-dbus
-$(package)_config_opts_android += -opengl es2
-$(package)_config_opts_android += -qt-freetype
-$(package)_config_opts_android += -no-fontconfig
-$(package)_config_opts_android += -L $(host_prefix)/lib
-$(package)_config_opts_android += -I $(host_prefix)/include
-$(package)_config_opts_android += -pch
-$(package)_config_opts_android += -no-feature-vulkan
-
-$(package)_config_opts_aarch64_android += -android-arch arm64-v8a
-$(package)_config_opts_armv7a_android += -android-arch armeabi-v7a
-$(package)_config_opts_x86_64_android += -android-arch x86_64
 endef

 define $(package)_fetch_cmds
@ -243,7 +224,6 @@ define $(package)_preprocess_cmds
  patch -p1 -i $($(package)_patch_dir)/fix-macos-linker.patch && \
  patch -p1 -i $($(package)_patch_dir)/dont_hardcode_pwd.patch && \
  patch -p1 -i $($(package)_patch_dir)/fix_qt_pkgconfig.patch && \
-  patch -p1 -i $($(package)_patch_dir)/fix_android_jni_static.patch && \
  patch -p1 -i $($(package)_patch_dir)/no-xlib.patch && \
  patch -p1 -i $($(package)_patch_dir)/qtbase-moc-ignore-gcc-macro.patch && \
  patch -p1 -i $($(package)_patch_dir)/memory_resource.patch && \
--- a/depends/patches/qt/fix_android_jni_static.patch
+++ b/depends/patches/qt/fix_android_jni_static.patch
@ -1,17 +0,0 @@
--- old/qtbase/src/plugins/platforms/android/androidjnimain.cpp
-+++ new/qtbase/src/plugins/platforms/android/androidjnimain.cpp
-@@ -979,6 +979,14 @@ Q_DECL_EXPORT jint JNICALL JNI_OnLoad(JavaVM *vm, void */*reserved*/)
-         __android_log_print(ANDROID_LOG_FATAL, "Qt", "registerNatives failed");
-         return -1;
-     }
-+
-+    const jint ret = QT_PREPEND_NAMESPACE(QtAndroidPrivate::initJNI(vm, env));
-+    if (ret != 0)
-+    {
-+        __android_log_print(ANDROID_LOG_FATAL, "Qt", "initJNI failed");
-+        return ret;
-+    }
-+
-     QWindowSystemInterfacePrivate::TabletEvent::setPlatformSynthesizesMouse(false);
- 
-     m_javaVM = vm;
--- a/doc/README.md
+++ b/doc/README.md
@ -45,7 +45,6 @@ The following are developer notes on how to build Bitcoin Core on your native pl
 - [FreeBSD Build Notes](build-freebsd.md)
 - [OpenBSD Build Notes](build-openbsd.md)
 - [NetBSD Build Notes](build-netbsd.md)
- [Android Build Notes](build-android.md)

 Development
 ---------------------
--- a/doc/build-android.md
+++ b/doc/build-android.md
@ -1,25 +0,0 @@
-ANDROID BUILD NOTES
-======================
-
-This guide describes how to build and package the `bitcoin-qt` GUI for Android on Linux and macOS.
-
-
-## Dependencies
-
-Before proceeding with an Android build one needs to get the [Android SDK](https://developer.android.com/studio) and use the "SDK Manager" tool to download the NDK and one or more "Platform packages" (these are Android versions and have a corresponding API level).
-
-The minimum supported Android NDK version is [r23](https://github.com/android/ndk/wiki/Changelog-r23).
-
-In order to build `ANDROID_API_LEVEL` (API level corresponding to the Android version targeted, e.g. Android 9.0 Pie is 28 and its "Platform package" needs to be available) and `ANDROID_TOOLCHAIN_BIN` (path to toolchain binaries depending on the platform the build is being performed on) need to be set.
-
-API levels from 24 to 29 have been tested to work.
-
-If the build includes Qt, environment variables `ANDROID_SDK` and `ANDROID_NDK` need to be set as well but can otherwise be omitted.
-This is an example command for a default build with no disabled dependencies:
-
-    ANDROID_SDK=/home/user/Android/Sdk ANDROID_NDK=/home/user/Android/Sdk/ndk-bundle make HOST=aarch64-linux-android ANDROID_API_LEVEL=28 ANDROID_TOOLCHAIN_BIN=/home/user/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin
-
-
-## Building and packaging
-
-After the depends are built configure with one of the resulting prefixes and run `make && make apk` in `src/qt`.
--- a/src/Makefile.qt.include
+++ b/src/Makefile.qt.include
@ -392,20 +392,6 @@ bitcoin_qt_clean: FORCE

 bitcoin_qt : qt/bitcoin-qt$(EXEEXT)

-APK_LIB_DIR = qt/android/libs/$(ANDROID_ARCH)
-QT_BASE_VERSION = $(lastword $(shell $(MOC) --version))
-QT_BASE_PATH = $(shell find ../depends/sources/ -maxdepth 1 -type f -regex ".*qtbase.*$(QT_BASE_VERSION)\.tar.xz")
-QT_BASE_TLD = $(shell tar tf $(QT_BASE_PATH) --exclude='*/*')
-
-bitcoin_qt_apk: FORCE
-	mkdir -p $(APK_LIB_DIR)
-	cp $(dir $(lastword $(CC)))../sysroot/usr/lib/$(host_alias)/libc++_shared.so $(APK_LIB_DIR)
-	tar xf $(QT_BASE_PATH) -C qt/android/src/ $(QT_BASE_TLD)src/android/jar/src --strip-components=5
-	tar xf $(QT_BASE_PATH) -C qt/android/src/ $(QT_BASE_TLD)src/android/java/src --strip-components=5
-	cp qt/bitcoin-qt $(APK_LIB_DIR)/libbitcoin-qt_$(ANDROID_ARCH).so
-	cd qt/android && gradle wrapper --gradle-version=6.6.1
-	cd qt/android && ./gradlew build
-
 ui_%.h: %.ui
 	@test -f $(UIC) || (echo "uic $(UIC) not found, but is required for generating ui headers"; exit 1)
 	@$(MKDIR_P) $(@D)
--- a/src/qt/android/.gitignore
+++ b/src/qt/android/.gitignore
@ -1,7 +0,0 @@
-/.gradle
-/build
-/gradle
-/gradlew*
-/libs
-/src/org/kde
-/src/org/qtproject
--- a/src/qt/android/AndroidManifest.xml
+++ b/src/qt/android/AndroidManifest.xml
@ -1,39 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<manifest package="org.bitcoincore.qt" xmlns:android="http://schemas.android.com/apk/res/android" android:versionName="1.0" android:versionCode="1" android:installLocation="auto">
-    <uses-sdk android:targetSdkVersion="24"/>
-
-    <uses-permission android:name="android.permission.INTERNET" />
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
-    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
-
-    <uses-feature android:glEsVersion="0x00020000" android:required="true" />
-
-    <supports-screens android:largeScreens="true" android:normalScreens="true" android:anyDensity="true" android:smallScreens="true"/>
-
-    <application android:hardwareAccelerated="true" android:name="org.qtproject.qt5.android.bindings.QtApplication" android:label="Bitcoin Core">
-        <activity android:configChanges="orientation|uiMode|screenLayout|screenSize|smallestScreenSize|layoutDirection|locale|fontScale|keyboard|keyboardHidden|navigation|mcc|mnc|density"
-                  android:name="org.bitcoincore.qt.BitcoinQtActivity"
-                  android:label="Bitcoin Core"
-                  android:icon="@drawable/bitcoin"
-                  android:screenOrientation="unspecified"
-                  android:launchMode="singleTop">
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN"/>
-                <category android:name="android.intent.category.LAUNCHER"/>
-            </intent-filter>
-
-            <meta-data android:name="android.app.arguments" android:value="-testnet"/>
-            <meta-data android:name="android.app.lib_name" android:value="bitcoin-qt"/>
-            <meta-data android:name="android.app.repository" android:value="default"/>
-            <meta-data android:name="android.app.bundle_local_qt_libs" android:value="1"/>
-            <meta-data android:name="android.app.use_local_qt_libs" android:value="1"/>
-            <meta-data android:name="android.app.libs_prefix" android:value="/data/local/tmp/qt/"/>
-            <meta-data android:name="android.app.system_libs_prefix" android:value="/system/lib/"/>
-            <meta-data android:name="android.app.background_running" android:value="true"/>
-            <meta-data android:name="android.app.auto_screen_scale_factor" android:value="true"/>
-            <meta-data android:name="android.app.extract_android_style" android:value="default"/>
-            <meta-data android:name="android.app.load_local_libs_resource_id" android:resource="@array/load_local_libs"/>
-        </activity>
-
-    </application>
-</manifest>
--- a/src/qt/android/build.gradle
+++ b/src/qt/android/build.gradle
@ -1,52 +0,0 @@
-buildscript {
-    repositories {
-        google()
-        jcenter()
-    }
-
-    dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.0'
-    }
-}
-
-repositories {
-    google()
-    jcenter()
-}
-
-apply plugin: 'com.android.application'
-
-dependencies {
-    implementation fileTree(dir: 'libs', include: ['*.jar'])
-}
-
-android {
-    compileSdkVersion androidCompileSdkVersion.toInteger()
-
-    buildToolsVersion androidBuildToolsVersion
-
-    sourceSets {
-        main {
-            manifest.srcFile 'AndroidManifest.xml'
-            java.srcDirs = [qt5AndroidDir + '/src', 'src', 'java']
-            aidl.srcDirs = [qt5AndroidDir + '/src', 'src', 'aidl']
-            res.srcDirs = [qt5AndroidDir + '/res', 'res']
-            resources.srcDirs = ['src']
-            renderscript.srcDirs = ['src']
-            assets.srcDirs = ['assets']
-            jniLibs.srcDirs = ['libs']
-       }
-    }
-
-    lintOptions {
-        abortOnError false
-    }
-
-    dexOptions {
-        javaMaxHeapSize '4g'
-    }
-
-    defaultConfig {
-        minSdkVersion 24
-    }
-}
--- a/src/qt/android/gradle.properties
+++ b/src/qt/android/gradle.properties
@ -1,4 +0,0 @@
-androidBuildToolsVersion=30.0.3
-androidCompileSdkVersion=30
-qt5AndroidDir=new File(".").absolutePath
-org.gradle.jvmargs=-Xmx4608M
--- a/src/qt/android/res/drawable-hdpi/bitcoin.png
+++ b/src/qt/android/res/drawable-hdpi/bitcoin.png
--- a/src/qt/android/res/drawable-ldpi/bitcoin.png
+++ b/src/qt/android/res/drawable-ldpi/bitcoin.png
--- a/src/qt/android/res/drawable-mdpi/bitcoin.png
+++ b/src/qt/android/res/drawable-mdpi/bitcoin.png
--- a/src/qt/android/res/drawable-xhdpi/bitcoin.png
+++ b/src/qt/android/res/drawable-xhdpi/bitcoin.png
--- a/src/qt/android/res/drawable-xxhdpi/bitcoin.png
+++ b/src/qt/android/res/drawable-xxhdpi/bitcoin.png
--- a/src/qt/android/res/drawable-xxxhdpi/bitcoin.png
+++ b/src/qt/android/res/drawable-xxxhdpi/bitcoin.png
--- a/src/qt/android/res/values/libs.xml
+++ b/src/qt/android/res/values/libs.xml
@ -1,14 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <array name="load_local_libs">
-        <item>
-            arm64-v8a;libbitcoin-qt_arm64-v8a.so
-        </item>
-        <item>
-            armeabi-v7a;libbitcoin-qt_armeabi-v7a.so
-        </item>
-        <item>
-            x86_64;libbitcoin-qt_x86_64.so
-        </item>
-    </array>
-</resources>
--- a/src/qt/android/src/org/bitcoincore/qt/BitcoinQtActivity.java
+++ b/src/qt/android/src/org/bitcoincore/qt/BitcoinQtActivity.java
@ -1,23 +0,0 @@
-package org.bitcoincore.qt;
-
-import android.os.Bundle;
-import android.system.ErrnoException;
-import android.system.Os;
-
-import org.qtproject.qt5.android.bindings.QtActivity;
-
-import java.io.File;
-
-public class BitcoinQtActivity extends QtActivity
-{
-    @Override
-    public void onCreate(Bundle savedInstanceState)
-    {
-        final File bitcoinDir = new File(getFilesDir().getAbsolutePath() + "/.bitcoin");
-        if (!bitcoinDir.exists()) {
-            bitcoinDir.mkdir();
-        }
-
-        super.onCreate(savedInstanceState);
-    }
-}