diff --git a/android/build_test_app.sh b/android/build_test_app.sh
index 0934590150728..1f552fa44869a 100755
--- a/android/build_test_app.sh
+++ b/android/build_test_app.sh
@@ -2,83 +2,16 @@
 set -eux
 
 PYTORCH_DIR="$(cd $(dirname $0)/..; pwd -P)"
-
 PYTORCH_ANDROID_DIR=$PYTORCH_DIR/android
-WORK_DIR=$PYTORCH_DIR
 
 echo "PYTORCH_DIR:$PYTORCH_DIR"
-echo "WORK_DIR:$WORK_DIR"
-
-echo "ANDROID_HOME:$ANDROID_HOME"
-if [ ! -z "$ANDROID_HOME" ]; then
-  echo "ANDROID_HOME not set; please set it to Android sdk directory"
-fi
-
-if [ ! -d $ANDROID_HOME ]; then
-  echo "ANDROID_HOME not a directory; did you install it under $ANDROID_HOME?"
-  exit 1
-fi
-
-GRADLE_PATH=gradle
-GRADLE_NOT_FOUND_MSG="Unable to find gradle, please add it to PATH or set GRADLE_HOME"
-
-if [ ! -x "$(command -v gradle)" ]; then
-  if [ -z "$GRADLE_HOME" ]; then
-    echo GRADLE_NOT_FOUND_MSG
-    exit 1
-  fi
-  GRADLE_PATH=$GRADLE_HOME/bin/gradle
-  if [ ! -f "$GRADLE_PATH" ]; then
-    echo GRADLE_NOT_FOUND_MSG
-    exit 1
-  fi
-fi
-echo "GRADLE_PATH:$GRADLE_PATH"
-
-ABIS_LIST="armeabi-v7a,arm64-v8a,x86,x86_64"
-CUSTOM_ABIS_LIST=false
-if [ $# -gt 0 ]; then
-  ABIS_LIST=$1
-  CUSTOM_ABIS_LIST=true
-fi
-
-echo "ABIS_LIST:$ABIS_LIST"
 
-LIB_DIR=$PYTORCH_ANDROID_DIR/pytorch_android/src/main/jniLibs
-INCLUDE_DIR=$PYTORCH_ANDROID_DIR/pytorch_android/src/main/cpp/libtorch_include
-mkdir -p $LIB_DIR
-rm -f $LIB_DIR/*
-mkdir -p $INCLUDE_DIR
+source "$PYTORCH_ANDROID_DIR/common.sh"
 
-for abi in $(echo $ABIS_LIST | tr ',' '\n')
-do
-echo "abi:$abi"
-
-OUT_DIR=$WORK_DIR/build_android_$abi
-
-rm -rf $OUT_DIR
-mkdir -p $OUT_DIR
-
-pushd $PYTORCH_DIR
-python $PYTORCH_DIR/setup.py clean
-
-ANDROID_ABI=$abi VERBOSE=1 ANDROID_DEBUG_SYMBOLS=1 $PYTORCH_DIR/scripts/build_android.sh -DANDROID_CCACHE=$(which ccache)
-
-cp -R $PYTORCH_DIR/build_android/install/lib $OUT_DIR/
-cp -R $PYTORCH_DIR/build_android/install/include $OUT_DIR/
-
-echo "$abi build output lib,include copied to $OUT_DIR"
-
-LIB_LINK_PATH=$LIB_DIR/$abi
-INCLUDE_LINK_PATH=$INCLUDE_DIR/$abi
-
-rm -f $LIB_LINK_PATH
-rm -f $INCLUDE_LINK_PATH
-
-ln -s $OUT_DIR/lib $LIB_LINK_PATH
-ln -s $OUT_DIR/include $INCLUDE_LINK_PATH
-
-done
+check_android_sdk
+check_gradle
+parse_abis_list "$@"
+build_android
 
 # To set proxy for gradle add following lines to ./gradle/gradle.properties:
 # systemProp.http.proxyHost=...
@@ -95,5 +28,3 @@ fi
 find $PYTORCH_ANDROID_DIR -type f -name *apk
 
 find $PYTORCH_ANDROID_DIR -type f -name *apk | xargs echo "To install apk run: $ANDROID_HOME/platform-tools/adb install -r "
-
-popd
diff --git a/android/common.sh b/android/common.sh
new file mode 100644
index 0000000000000..98457524e9ad8
--- /dev/null
+++ b/android/common.sh
@@ -0,0 +1,81 @@
+#!/bin/bash
+set -eux
+
+##############################################################################
+# Common util functions for Android build scripts.
+##############################################################################
+
+if [ -z "$PYTORCH_DIR" ]; then
+  echo "PYTORCH_DIR not set!"
+  exit 1
+fi
+
+check_android_sdk() {
+  if [ -z "$ANDROID_HOME" ]; then
+    echo "ANDROID_HOME not set; please set it to Android sdk directory"
+    exit 1
+  fi
+
+  if [ ! -d "$ANDROID_HOME" ]; then
+    echo "ANDROID_HOME not a directory; did you install it under $ANDROID_HOME?"
+    exit 1
+  fi
+  echo "ANDROID_HOME:$ANDROID_HOME"
+}
+
+check_gradle() {
+  GRADLE_PATH=gradle
+  GRADLE_NOT_FOUND_MSG="Unable to find gradle, please add it to PATH or set GRADLE_HOME"
+
+  if [ ! -x "$(command -v gradle)" ]; then
+    if [ -z "$GRADLE_HOME" ]; then
+      echo "$GRADLE_NOT_FOUND_MSG"
+      exit 1
+    fi
+    GRADLE_PATH=$GRADLE_HOME/bin/gradle
+    if [ ! -f "$GRADLE_PATH" ]; then
+      echo "$GRADLE_NOT_FOUND_MSG"
+      exit 1
+    fi
+  fi
+  echo "GRADLE_PATH:$GRADLE_PATH"
+}
+
+parse_abis_list() {
+  ABIS_LIST="armeabi-v7a,arm64-v8a,x86,x86_64"
+  CUSTOM_ABIS_LIST=false
+  if [ $# -gt 0 ]; then
+    ABIS_LIST=$1
+    CUSTOM_ABIS_LIST=true
+  fi
+
+  echo "ABIS_LIST:$ABIS_LIST"
+  echo "CUSTOM_ABIS_LIST:$CUSTOM_ABIS_LIST"
+}
+
+build_android() {
+  PYTORCH_ANDROID_DIR="$PYTORCH_DIR/android"
+  BUILD_ROOT="${BUILD_ROOT:-$PYTORCH_DIR}"
+  echo "BUILD_ROOT:$BUILD_ROOT"
+
+  LIB_DIR="$PYTORCH_ANDROID_DIR/pytorch_android/src/main/jniLibs"
+  INCLUDE_DIR="$PYTORCH_ANDROID_DIR/pytorch_android/src/main/cpp/libtorch_include"
+
+  # These directories only contain symbolic links.
+  rm -rf "$LIB_DIR" && mkdir -p "$LIB_DIR"
+  rm -rf "$INCLUDE_DIR" && mkdir -p "$INCLUDE_DIR"
+
+  for abi in $(echo "$ABIS_LIST" | tr ',' '\n')
+  do
+    echo "abi:$abi"
+    ANDROID_BUILD_ROOT="$BUILD_ROOT/build_android_$abi"
+    ANDROID_ABI="$abi" \
+      BUILD_ROOT="$ANDROID_BUILD_ROOT" \
+      "$PYTORCH_DIR/scripts/build_android.sh" \
+      -DANDROID_CCACHE="$(which ccache)"
+
+    echo "$abi build output lib,include at $ANDROID_BUILD_ROOT/install"
+    ln -s "$ANDROID_BUILD_ROOT/install/lib" "$LIB_DIR/$abi"
+    ln -s "$ANDROID_BUILD_ROOT/install/include" "$INCLUDE_DIR/$abi"
+  done
+}
diff --git a/android/run_tests.sh b/android/run_tests.sh
index d6977644e3048..a96177f072b7a 100755
--- a/android/run_tests.sh
+++ b/android/run_tests.sh
@@ -4,42 +4,10 @@ set -eux
 PYTORCH_DIR="$(cd $(dirname $0)/..; pwd -P)"
 PYTORCH_ANDROID_DIR=$PYTORCH_DIR/android
 
-echo "ANDROID_HOME:$ANDROID_HOME"
-if [ ! -z "$ANDROID_HOME" ]; then
-  echo "ANDROID_HOME not set; please set it to Android sdk directory"
-fi
-
-if [ ! -d $ANDROID_HOME ]; then
-  echo "ANDROID_HOME not a directory; did you install it under $ANDROID_HOME?"
-  exit 1
-fi
-
-echo "ANDROID_NDK:$ANDROID_NDK"
-if [ ! -z "$ANDROID_NDK" ]; then
-  echo "ANDROID_NDK not set; please set it to Android sdk directory"
-fi
-
-if [ ! -d $ANDROID_NDK ]; then
-  echo "ANDROID_NDK not a directory; did you install it under $ANDROID_NDK?"
-  exit 1
-fi
-
-GRADLE_PATH=gradle
-GRADLE_NOT_FOUND_MSG="Unable to find gradle, please add it to PATH or set GRADLE_HOME"
-
-if [ ! -x "$(command -v gradle)" ]; then
-  if [ -z "$GRADLE_HOME" ]; then
-    echo GRADLE_NOT_FOUND_MSG 
-    exit 1
-  fi
-  GRADLE_PATH=$GRADLE_HOME/bin/gradle
-  if [ ! -f "$GRADLE_PATH" ]; then
-    echo GRADLE_NOT_FOUND_MSG 
-    exit 1
-  fi
-fi
-echo "GRADLE_PATH:$GRADLE_PATH"
+source "$PYTORCH_ANDROID_DIR/common.sh"
 
+check_android_sdk
+check_gradle
 
 # Run android instrumented tests on x86 emulator
 
@@ -70,7 +38,7 @@ cat <<- EOF
   $ANDROID_HOME/platform-tools/adb devices
 
   If everything is ok the output will be:
-  
+
   List of devices attached
   emulator-5554   device
 EOF
diff --git a/scripts/build_pytorch_android.sh b/scripts/build_pytorch_android.sh
index ae9a645bfd5f7..1f35a3d3d03c0 100755
--- a/scripts/build_pytorch_android.sh
+++ b/scripts/build_pytorch_android.sh
@@ -1,6 +1,17 @@
 #!/bin/bash
 set -eux
 
+##############################################################################
+# Master script to build PyTorch Android library with Java bindings.
+##############################################################################
+# Example usage:
+# - Build default AARs:
+#   scipts/build_pytorch_androis.sh
+#
+# - Build for specific ABI(s):
+#   scipts/build_pytorch_androis.sh armeabi-v7a
+#   scipts/build_pytorch_androis.sh arm64-v8a,x86,x86_64
+#
 # Script's workflow:
 # 1. Builds libtorch for android for specified android abisi (by default for all 4).
 # Custom list of android abis can be specified as a bash argument as comma separated list.
@@ -12,82 +23,16 @@ set -eux
 # gradle assembleRelease
 
 PYTORCH_DIR="$(cd $(dirname $0)/..; pwd -P)"
-
 PYTORCH_ANDROID_DIR=$PYTORCH_DIR/android
-WORK_DIR=$PYTORCH_DIR
 
 echo "PYTORCH_DIR:$PYTORCH_DIR"
-echo "WORK_DIR:$WORK_DIR"
-
-echo "ANDROID_HOME:$ANDROID_HOME"
-if [ -z "$ANDROID_HOME" ]; then
-  echo "ANDROID_HOME not set; please set it to Android sdk directory"
-fi
-
-if [ ! -d $ANDROID_HOME ]; then
-  echo "ANDROID_HOME not a directory; did you install it under $ANDROID_HOME?"
-  exit 1
-fi
-
-GRADLE_PATH=gradle
-GRADLE_NOT_FOUND_MSG="Unable to find gradle, please add it to PATH or set GRADLE_HOME"
-
-if [ ! -x "$(command -v gradle)" ]; then
-  if [ -z "$GRADLE_HOME" ]; then
-    echo GRADLE_NOT_FOUND_MSG
-    exit 1
-  fi
-  GRADLE_PATH=$GRADLE_HOME/bin/gradle
-  if [ ! -f "$GRADLE_PATH" ]; then
-    echo GRADLE_NOT_FOUND_MSG
-    exit 1
-  fi
-fi
-echo "GRADLE_PATH:$GRADLE_PATH"
-
-ABIS_LIST="armeabi-v7a,arm64-v8a,x86,x86_64"
-CUSTOM_ABIS_LIST=false
-if [ $# -gt 0 ]; then
-  ABIS_LIST=$1
-  CUSTOM_ABIS_LIST=true
-fi
-
-echo "ABIS_LIST:$ABIS_LIST"
-
-LIB_DIR=$PYTORCH_ANDROID_DIR/pytorch_android/src/main/jniLibs
-INCLUDE_DIR=$PYTORCH_ANDROID_DIR/pytorch_android/src/main/cpp/libtorch_include
-mkdir -p $LIB_DIR
-mkdir -p $INCLUDE_DIR
-
-for abi in $(echo $ABIS_LIST | tr ',' '\n')
-do
-echo "abi:$abi"
-
-OUT_DIR=$WORK_DIR/build_android_$abi
-
-rm -rf $OUT_DIR
-mkdir -p $OUT_DIR
-
-pushd $PYTORCH_DIR
-python $PYTORCH_DIR/setup.py clean
-
-ANDROID_ABI=$abi $PYTORCH_DIR/scripts/build_android.sh -DANDROID_CCACHE=$(which ccache)
-
-cp -R $PYTORCH_DIR/build_android/install/lib $OUT_DIR/
-cp -R $PYTORCH_DIR/build_android/install/include $OUT_DIR/
-
-echo "$abi build output lib,include copied to $OUT_DIR"
-
-LIB_LINK_PATH=$LIB_DIR/$abi
-INCLUDE_LINK_PATH=$INCLUDE_DIR/$abi
-
-rm -f $LIB_LINK_PATH
-rm -f $INCLUDE_LINK_PATH
 
-ln -s $OUT_DIR/lib $LIB_LINK_PATH
-ln -s $OUT_DIR/include $INCLUDE_LINK_PATH
+source "$PYTORCH_ANDROID_DIR/common.sh"
 
-done
+check_android_sdk
+check_gradle
+parse_abis_list "$@"
+build_android
 
 # To set proxy for gradle add following lines to ./gradle/gradle.properties:
 # systemProp.http.proxyHost=...
@@ -102,4 +47,3 @@ else
 fi
 
 find $PYTORCH_ANDROID_DIR -type f -name *aar | xargs ls -lah
-popd