diff --git a/tests/cts/hostside/Android.bp b/tests/cts/hostside/Android.bp
new file mode 100644
index 0000000..b6f5142
--- /dev/null
+++ b/tests/cts/hostside/Android.bp
@@ -0,0 +1,30 @@
+// Copyright (C) 2014 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+java_test_host {
+    name: "CtsHostsideNetworkTests",
+    defaults: ["cts_defaults"],
+    // Only compile source java files in this apk.
+    srcs: ["src/**/*.java"],
+    libs: [
+        "cts-tradefed",
+        "tradefed",
+    ],
+    // Tag this module as a cts test artifact
+    test_suites: [
+        "cts",
+        "vts",
+        "general-tests",
+    ],
+}
diff --git a/tests/cts/hostside/Android.mk b/tests/cts/hostside/Android.mk
deleted file mode 100644
index 7270580..0000000
--- a/tests/cts/hostside/Android.mk
+++ /dev/null
@@ -1,34 +0,0 @@
-# Copyright (C) 2014 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-
-# Only compile source java files in this apk.
-LOCAL_SRC_FILES := $(call all-java-files-under, src)
-
-LOCAL_MODULE := CtsHostsideNetworkTests
-
-LOCAL_JAVA_LIBRARIES := cts-tradefed tradefed
-
-LOCAL_CTS_TEST_PACKAGE := android.net.hostsidenetwork
-
-# Tag this module as a cts test artifact
-LOCAL_COMPATIBILITY_SUITE := cts vts general-tests
-
-include $(BUILD_CTS_HOST_JAVA_LIBRARY)
-
-# Build the test APKs using their own makefiles
-include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/tests/cts/hostside/aidl/Android.bp b/tests/cts/hostside/aidl/Android.bp
new file mode 100644
index 0000000..320a1fa
--- /dev/null
+++ b/tests/cts/hostside/aidl/Android.bp
@@ -0,0 +1,24 @@
+// Copyright (C) 2016 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+java_test_helper_library {
+    name: "CtsHostsideNetworkTestsAidl",
+    sdk_version: "current",
+    srcs: [
+        "com/android/cts/net/hostside/IMyService.aidl",
+        "com/android/cts/net/hostside/INetworkCallback.aidl",
+        "com/android/cts/net/hostside/INetworkStateObserver.aidl",
+        "com/android/cts/net/hostside/IRemoteSocketFactory.aidl",
+    ],
+}
diff --git a/tests/cts/hostside/aidl/Android.mk b/tests/cts/hostside/aidl/Android.mk
deleted file mode 100644
index 20dabc1..0000000
--- a/tests/cts/hostside/aidl/Android.mk
+++ /dev/null
@@ -1,26 +0,0 @@
-# Copyright (C) 2016 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE_TAGS := tests
-LOCAL_SDK_VERSION := current
-LOCAL_SRC_FILES := \
-        com/android/cts/net/hostside/IMyService.aidl \
-        com/android/cts/net/hostside/INetworkCallback.aidl \
-        com/android/cts/net/hostside/INetworkStateObserver.aidl \
-        com/android/cts/net/hostside/IRemoteSocketFactory.aidl
-LOCAL_MODULE := CtsHostsideNetworkTestsAidl
-include $(BUILD_STATIC_JAVA_LIBRARY)
diff --git a/tests/cts/hostside/app/Android.bp b/tests/cts/hostside/app/Android.bp
new file mode 100644
index 0000000..d66b71b
--- /dev/null
+++ b/tests/cts/hostside/app/Android.bp
@@ -0,0 +1,39 @@
+//
+// Copyright (C) 2014 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+android_test_helper_app {
+    name: "CtsHostsideNetworkTestsApp",
+    defaults: ["cts_support_defaults"],
+    //sdk_version: "current",
+    platform_apis: true,
+    static_libs: [
+        "compatibility-device-util-axt",
+        "ctstestrunner-axt",
+        "ub-uiautomator",
+        "CtsHostsideNetworkTestsAidl",
+    ],
+    libs: [
+        "android.test.runner.stubs",
+        "android.test.base.stubs",
+    ],
+    srcs: ["src/**/*.java"],
+    // Tag this module as a cts test artifact
+    test_suites: [
+        "cts",
+        "vts",
+        "general-tests",
+    ],
+}
diff --git a/tests/cts/hostside/app/Android.mk b/tests/cts/hostside/app/Android.mk
deleted file mode 100644
index 11f6bb1..0000000
--- a/tests/cts/hostside/app/Android.mk
+++ /dev/null
@@ -1,39 +0,0 @@
-#
-# Copyright (C) 2014 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-
-LOCAL_MODULE_TAGS := tests
-#LOCAL_SDK_VERSION := current
-LOCAL_PRIVATE_PLATFORM_APIS := true
-LOCAL_STATIC_JAVA_LIBRARIES := compatibility-device-util-axt ctstestrunner-axt ub-uiautomator \
-        CtsHostsideNetworkTestsAidl
-
-LOCAL_JAVA_LIBRARIES := android.test.runner.stubs android.test.base.stubs
-
-LOCAL_SRC_FILES := $(call all-java-files-under, src)
-
-LOCAL_PACKAGE_NAME := CtsHostsideNetworkTestsApp
-
-LOCAL_PROGUARD_ENABLED := disabled
-LOCAL_DEX_PREOPT := false
-
-# Tag this module as a cts test artifact
-LOCAL_COMPATIBILITY_SUITE := cts vts general-tests
-
-include $(BUILD_CTS_SUPPORT_PACKAGE)
diff --git a/tests/cts/hostside/app2/Android.bp b/tests/cts/hostside/app2/Android.bp
new file mode 100644
index 0000000..8a3c8e7
--- /dev/null
+++ b/tests/cts/hostside/app2/Android.bp
@@ -0,0 +1,30 @@
+//
+// Copyright (C) 2016 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+android_test_helper_app {
+    name: "CtsHostsideNetworkTestsApp2",
+    defaults: ["cts_support_defaults"],
+    sdk_version: "current",
+    static_libs: ["CtsHostsideNetworkTestsAidl"],
+    srcs: ["src/**/*.java"],
+    // Tag this module as a cts test artifact
+    test_suites: [
+        "cts",
+        "vts",
+        "general-tests",
+    ],
+    certificate: ":cts-net-app",
+}
diff --git a/tests/cts/hostside/app2/Android.mk b/tests/cts/hostside/app2/Android.mk
deleted file mode 100644
index 5c0bae1..0000000
--- a/tests/cts/hostside/app2/Android.mk
+++ /dev/null
@@ -1,37 +0,0 @@
-#
-# Copyright (C) 2016 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-
-LOCAL_MODULE_TAGS := tests
-LOCAL_SDK_VERSION := current
-LOCAL_STATIC_JAVA_LIBRARIES := CtsHostsideNetworkTestsAidl
-
-LOCAL_SRC_FILES := $(call all-java-files-under, src)
-
-LOCAL_PACKAGE_NAME := CtsHostsideNetworkTestsApp2
-
-LOCAL_PROGUARD_ENABLED := disabled
-LOCAL_DEX_PREOPT := false
-
-# Tag this module as a cts test artifact
-LOCAL_COMPATIBILITY_SUITE := cts vts general-tests
-
-LOCAL_CERTIFICATE := cts/hostsidetests/net/certs/cts-net-app
-
-include $(BUILD_CTS_SUPPORT_PACKAGE)
diff --git a/tests/cts/hostside/certs/Android.bp b/tests/cts/hostside/certs/Android.bp
new file mode 100644
index 0000000..ab4cf34
--- /dev/null
+++ b/tests/cts/hostside/certs/Android.bp
@@ -0,0 +1,4 @@
+android_app_certificate {
+    name: "cts-net-app",
+    certificate: "cts-net-app",
+}