Add a workflow to build btbench

.github/ci-gradle.properties

@@ -0,0 +1,26 @@
+#
+# Copyright 2025 Google LLC
+#
+# 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.
+#
+
+org.gradle.configureondemand=true
+org.gradle.caching=true
+org.gradle.parallel=true
+
+# Declare we support AndroidX
+android.useAndroidX=true
+
+org.gradle.jvmargs=-Xmx4608m -XX:MaxMetaspaceSize=1536m -XX:+HeapDumpOnOutOfMemoryError
+
+kotlin.compiler.execution.strategy=in-process

.github/workflows/gradle-btbench.yml

@@ -0,0 +1,33 @@
+name: Gradle Android Build & test
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'extras/android/BtBench/**'
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 40
+
+    steps:
+      - name: Check out from Git
+        uses: actions/checkout@v3
+
+      - name: Set up JDK
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'zulu'
+          java-version: 17
+
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v3
+
+      - name: Build with Gradle
+        run: cd extras/android/BtBench && ./gradlew build

extras/android/BtBench/.gitignore

@@ -1,12 +1,7 @@
 *.iml
 .gradle
 /local.properties
-/.idea/caches
-/.idea/libraries
-/.idea/modules.xml
-/.idea/workspace.xml
-/.idea/navEditor.xml
-/.idea/assetWizardSettings.xml
+.idea/
 .DS_Store
 /build
 /captures

extras/android/BtBench/app/src/main/AndroidManifest.xml

@@ -5,6 +5,7 @@
     <!-- Request legacy Bluetooth permissions on older devices. -->
     <uses-permission android:name="android.permission.BLUETOOTH" android:maxSdkVersion="30" />
     <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" android:maxSdkVersion="30" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
 
     <uses-permission android:name="android.permission.BLUETOOTH_SCAN" android:usesPermissionFlags="neverForLocation"/>
     <uses-permission android:name="android.permission.BLUETOOTH_ADVERTISE" />

extras/android/BtBench/app/src/main/java/com/github/google/bumble/btbench/Advertiser.kt

@@ -6,13 +6,14 @@ import android.bluetooth.le.AdvertiseCallback
 import android.bluetooth.le.AdvertiseData
 import android.bluetooth.le.AdvertiseSettings
 import android.bluetooth.le.AdvertiseSettings.ADVERTISE_MODE_LOW_LATENCY
-import android.os.Build
+import androidx.annotation.RequiresApi
 import java.util.logging.Logger
 
 private val Log = Logger.getLogger("btbench.advertiser")
 
 class Advertiser(private val bluetoothAdapter: BluetoothAdapter) : AdvertiseCallback() {
     @SuppressLint("MissingPermission")
+    @RequiresApi(34)
     fun start() {
         val advertiseSettingsBuilder = AdvertiseSettings.Builder()
             .setAdvertiseMode(ADVERTISE_MODE_LOW_LATENCY)

extras/android/BtBench/app/src/main/java/com/github/google/bumble/btbench/GattServer.kt

@@ -26,6 +26,8 @@ import android.bluetooth.BluetoothGattService
 import android.bluetooth.BluetoothManager
 import android.bluetooth.BluetoothStatusCodes
 import android.content.Context
+import android.os.Build
+import androidx.annotation.RequiresApi
 import androidx.core.content.ContextCompat
 import java.io.IOException
 import java.util.concurrent.CountDownLatch
@@ -174,6 +176,7 @@ class GattServer(
         }
     }
 
+    @RequiresApi(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
     override fun run() {
         viewModel.running = true
 

extras/android/BtBench/app/src/main/java/com/github/google/bumble/btbench/L2capServer.kt

@@ -16,14 +16,9 @@ package com.github.google.bumble.btbench
 
 import android.annotation.SuppressLint
 import android.bluetooth.BluetoothAdapter
-import android.bluetooth.le.AdvertiseCallback
-import android.bluetooth.le.AdvertiseData
-import android.bluetooth.le.AdvertiseSettings
-import android.bluetooth.le.AdvertiseSettings.ADVERTISE_MODE_LOW_LATENCY
 import android.os.Build
-import java.io.IOException
+import androidx.annotation.RequiresApi
 import java.util.logging.Logger
-import kotlin.concurrent.thread
 
 private val Log = Logger.getLogger("btbench.l2cap-server")
 
@@ -34,6 +29,7 @@ class L2capServer(
 ) : Mode {
     private var socketServer: SocketServer? = null
 
+    @RequiresApi(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
     @SuppressLint("MissingPermission")
     override fun run() {
         // Advertise so that the peer can find us and connect.