Snap for 12313714 from 707f93585197c49d7fadb5933aabd0d521cf4c8e to 24Q4-release (c5e98891) · Commits · e / os / android_packages_modules_Bluetooth

android/ChannelSoundingTestApp/app/build.gradle.kts

+6 −3

Original line number	Diff line number	Diff line
		@@ -10,8 +10,8 @@ android {
		applicationId = "com.android.bluetooth.channelsoundingtestapp"
		minSdk = 34
		targetSdk = 34
		versionCode = 1
		versionName = "1.0"
		versionCode = 2
		versionName = "2.0"

		testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
		}
		@@ -38,6 +38,9 @@ dependencies {
		implementation(libs.constraintlayout)
		implementation(libs.navigation.fragment)
		implementation(libs.navigation.ui)
		implementation(libs.legacy.support.v4)
		implementation(libs.lifecycle.livedata.ktx)
		implementation(libs.lifecycle.viewmodel.ktx)
		testImplementation(libs.junit)
		androidTestImplementation(libs.ext.junit)
		androidTestImplementation(libs.espresso.core)

android/ChannelSoundingTestApp/app/src/main/AndroidManifest.xml

+5 −2

Original line number	Diff line number	Diff line
		@@ -4,9 +4,12 @@
		package="com.android.bluetooth.channelsoundingtestapp">
		<uses-feature android:name="android.hardware.bluetooth" android:required="true"/>

		<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
		<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
		<uses-permission android:name="android.permission.BLUETOOTH_ADVERTISE" />
		<uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
		<uses-permission android:name="android.permission.BLUETOOTH_PRIVILEGED" />
		<uses-permission android:name="android.permission.BLUETOOTH_SCAN" />

		<application
		android:allowBackup="true"
		@@ -17,7 +20,7 @@
		android:roundIcon="@mipmap/ic_launcher_round"
		android:supportsRtl="true"
		android:theme="@style/Theme.ChannelSoundingTestApp"
		tools:targetApi="31">
		tools:targetApi="34">
		<activity
		android:name=".MainActivity"
		android:exported="true"

android/ChannelSoundingTestApp/app/src/main/java/com/android/bluetooth/channelsoundingtestapp/BleConnectionFragment.java

0 → 100644

+162 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright 2024 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.
		*/

		package com.android.bluetooth.channelsoundingtestapp;

		import android.os.Bundle;
		import android.view.LayoutInflater;
		import android.view.View;
		import android.view.View.OnClickListener;
		import android.view.ViewGroup;
		import android.widget.AdapterView;
		import android.widget.AdapterView.OnItemSelectedListener;
		import android.widget.ArrayAdapter;
		import android.widget.Button;
		import android.widget.Spinner;

		import androidx.annotation.NonNull;
		import androidx.annotation.Nullable;
		import androidx.fragment.app.Fragment;
		import androidx.lifecycle.ViewModelProvider;

		import java.util.ArrayList;

		/** Child fragment to handle BLE GATT connection. */
		@SuppressWarnings("SetTextI18n")
		public class BleConnectionFragment extends Fragment {

		private BleConnectionViewModel mViewModel;
		private Button mBtnAdvertising;

		private ArrayAdapter<String> mBondedBtDevicesArrayAdapter;
		private Button mButtonUpdate;
		private Button mButtonGatt;
		private Button mButtonScanConnect;
		private Spinner mSpinnerBtAddress;

		public static BleConnectionFragment newInstance() {
		return new BleConnectionFragment();
		}

		@Override
		public View onCreateView(
		@NonNull LayoutInflater inflater,
		@Nullable ViewGroup container,
		@Nullable Bundle savedInstanceState) {

		View root = inflater.inflate(R.layout.fragment_ble_connection, container, false);
		mBtnAdvertising = root.findViewById(R.id.btn_advertising);
		mButtonUpdate = (Button) root.findViewById(R.id.btn_update_devices);
		mButtonGatt = (Button) root.findViewById(R.id.btn_connect_gatt);
		mButtonScanConnect = (Button) root.findViewById(R.id.btn_scan_connect);
		mSpinnerBtAddress = (Spinner) root.findViewById(R.id.spinner_bt_address);
		return root;
		}

		@Override
		public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
		super.onViewCreated(view, savedInstanceState);

		mBondedBtDevicesArrayAdapter =
		new ArrayAdapter<String>(
		getContext(), android.R.layout.simple_spinner_item, new ArrayList<>());
		mBondedBtDevicesArrayAdapter.setDropDownViewResource(
		android.R.layout.simple_spinner_dropdown_item);
		mSpinnerBtAddress.setAdapter(mBondedBtDevicesArrayAdapter);

		mViewModel =
		new ViewModelProvider(requireParentFragment()).get(BleConnectionViewModel.class);
		mViewModel
		.getGattState()
		.observe(
		getActivity(),
		gattSate -> {
		switch (gattSate) {
		case CONNECTED_DIRECT:
		mButtonGatt.setText("Disconnect Gatt");
		break;
		case SCANNING:
		mButtonScanConnect.setText("Stop Scan");
		break;
		case CONNECTED_SCAN:
		mButtonScanConnect.setText("Disconnect Gatt");
		break;
		case DISCONNECTED:
		default:
		mButtonGatt.setText("Connect Gatt");
		mButtonScanConnect.setText("Scan and Connect");
		}
		});
		mButtonUpdate.setOnClickListener(
		v -> {
		mViewModel.updateBondedDevices();
		});
		mViewModel
		.getBondedBtDeviceAddresses()
		.observe(
		getActivity(),
		deviceList -> {
		mBondedBtDevicesArrayAdapter.clear();
		mBondedBtDevicesArrayAdapter.addAll(deviceList);
		if (mSpinnerBtAddress.getSelectedItem() != null) {
		String selectedBtAddress =
		mSpinnerBtAddress.getSelectedItem().toString();
		mViewModel.setCsTargetAddress(selectedBtAddress);
		}
		});
		mSpinnerBtAddress.setOnItemSelectedListener(
		new OnItemSelectedListener() {
		@Override
		public void onItemSelected(
		AdapterView<?> adapterView, View view, int i, long l) {
		String btAddress = mSpinnerBtAddress.getSelectedItem().toString();
		mViewModel.setCsTargetAddress(btAddress);
		}

		@Override
		public void onNothingSelected(AdapterView<?> adapterView) {
		mViewModel.setCsTargetAddress("");
		}
		});
		mButtonGatt.setOnClickListener(
		v -> {
		mViewModel.toggleGattConnection();
		});
		mButtonScanConnect.setOnClickListener(
		v -> {
		mViewModel.toggleScanConnect();
		});
		mViewModel
		.getIsAdvertising()
		.observe(
		getActivity(),
		isAdvertising -> {
		if (isAdvertising) {
		mBtnAdvertising.setText("Stop Advertising");
		} else {
		mBtnAdvertising.setText("Start Advertising");
		}
		});

		mBtnAdvertising.setOnClickListener(
		new OnClickListener() {
		@Override
		public void onClick(View view) {
		mViewModel.toggleAdvertising();
		}
		});
		}
		}

android/ChannelSoundingTestApp/app/src/main/java/com/android/bluetooth/channelsoundingtestapp/BleConnectionViewModel.java

0 → 100644

+342 −0

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		/*
		* Copyright 2024 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.
		*/

		package com.android.bluetooth.channelsoundingtestapp;

		import android.annotation.SuppressLint;
		import android.app.Application;
		import android.bluetooth.BluetoothAdapter;
		import android.bluetooth.BluetoothDevice;
		import android.bluetooth.BluetoothGatt;
		import android.bluetooth.BluetoothGattCallback;
		import android.bluetooth.BluetoothGattServer;
		import android.bluetooth.BluetoothGattServerCallback;
		import android.bluetooth.BluetoothManager;
		import android.bluetooth.BluetoothProfile;
		import android.bluetooth.le.AdvertiseData;
		import android.bluetooth.le.AdvertisingSet;
		import android.bluetooth.le.AdvertisingSetCallback;
		import android.bluetooth.le.AdvertisingSetParameters;
		import android.bluetooth.le.BluetoothLeAdvertiser;
		import android.bluetooth.le.BluetoothLeScanner;
		import android.bluetooth.le.ScanCallback;
		import android.bluetooth.le.ScanFilter;
		import android.bluetooth.le.ScanResult;
		import android.bluetooth.le.ScanSettings;
		import android.os.ParcelUuid;
		import android.text.TextUtils;

		import androidx.annotation.NonNull;
		import androidx.annotation.Nullable;
		import androidx.lifecycle.AndroidViewModel;
		import androidx.lifecycle.LiveData;
		import androidx.lifecycle.MutableLiveData;

		import com.android.bluetooth.channelsoundingtestapp.Constants.GattState;

		import java.util.ArrayList;
		import java.util.List;
		import java.util.Set;

		/** The ViewModel for the BLE GATT connection. */
		@SuppressLint("MissingPermission") // permissions are checked upfront
		public class BleConnectionViewModel extends AndroidViewModel {
		private static final int GATT_MTU_SIZE = 512;

		private final BluetoothAdapter mBluetoothAdapter;
		private final BluetoothManager mBluetoothManager;
		@Nullable private BluetoothGatt mBluetoothGatt = null;
		private MutableLiveData<Boolean> mIsAdvertising = new MutableLiveData<>(false);
		private MutableLiveData<String> mLogText = new MutableLiveData<>();
		private MutableLiveData<BluetoothDevice> mTargetDevice = new MutableLiveData<>();
		// scanner
		private final MutableLiveData<List<String>> mBondedBtDeviceAddresses = new MutableLiveData<>();
		private final MutableLiveData<GattState> mGattState =
		new MutableLiveData<>(GattState.DISCONNECTED);
		private String mTargetBtAddress = "";

		private GattState mExpectedGattState = GattState.DISCONNECTED;

		/** Constructor */
		public BleConnectionViewModel(@NonNull Application application) {
		super(application);
		mBluetoothManager = application.getSystemService(BluetoothManager.class);
		mBluetoothAdapter = mBluetoothManager.getAdapter();
		}

		LiveData<Boolean> getIsAdvertising() {
		return mIsAdvertising;
		}

		LiveData<String> getLogText() {
		return mLogText;
		}

		LiveData<GattState> getGattState() {
		return mGattState;
		}

		LiveData<List<String>> getBondedBtDeviceAddresses() {
		return mBondedBtDeviceAddresses;
		}

		LiveData<BluetoothDevice> getTargetDevice() {
		return mTargetDevice;
		}

		void toggleAdvertising() {
		if (mIsAdvertising.getValue()) {
		stopAdvertising();
		} else {
		startConnectableAdvertising();
		}
		}

		AdvertisingSetCallback mAdvertisingSetCallback =
		new AdvertisingSetCallback() {
		@Override
		public void onAdvertisingSetStarted(
		AdvertisingSet advertisingSet, int txPower, int status) {
		printLog(
		"onAdvertisingSetStarted(): txPower:"
		+ txPower
		+ " , status: "
		+ status);
		if (status == 0) {
		mIsAdvertising.postValue(true);
		}
		}

		@Override
		public void onAdvertisingDataSet(AdvertisingSet advertisingSet, int status) {
		printLog("onAdvertisingDataSet() :status:" + status);
		}

		@Override
		public void onScanResponseDataSet(AdvertisingSet advertisingSet, int status) {
		printLog("onScanResponseDataSet(): status:" + status);
		}

		@Override
		public void onAdvertisingSetStopped(AdvertisingSet advertisingSet) {
		printLog("onAdvertisingSetStopped():");
		mIsAdvertising.postValue(false);
		}
		};

		private void startConnectableAdvertising() {
		if (mIsAdvertising.getValue()) {
		return;
		}
		BluetoothLeAdvertiser advertiser = mBluetoothAdapter.getBluetoothLeAdvertiser();
		AdvertisingSetParameters parameters =
		new AdvertisingSetParameters.Builder()
		.setLegacyMode(false) // True by default, but set here as a reminder.
		.setConnectable(true)
		.setInterval(AdvertisingSetParameters.INTERVAL_LOW)
		.setTxPowerLevel(AdvertisingSetParameters.TX_POWER_MEDIUM)
		.build();

		BluetoothGattServerCallback gattServerCallback =
		new BluetoothGattServerCallback() {
		@Override
		public void onConnectionStateChange(
		BluetoothDevice device, int status, int newState) {
		super.onConnectionStateChange(device, status, newState);
		if (newState == BluetoothProfile.STATE_CONNECTED) {
		printLog("Device connected: " + device.getName());
		mTargetDevice.postValue(device);
		} else if (newState == BluetoothProfile.STATE_DISCONNECTED) {
		printLog("Device disconnected: " + device.getName());
		mTargetDevice.postValue(null);
		}
		}
		};

		BluetoothGattServer bluetoothGattServer =
		mBluetoothManager.openGattServer(
		getApplication().getApplicationContext(), gattServerCallback);
		AdvertiseData advertiseData =
		new AdvertiseData.Builder()
		.setIncludeDeviceName(true)
		.addServiceUuid(new ParcelUuid(Constants.CS_TEST_SERVICE_UUID))
		.build();

		printLog("Start connectable advertising");

		advertiser.startAdvertisingSet(
		parameters, advertiseData, null, null, null, 0, 0, mAdvertisingSetCallback);
		}

		private void stopAdvertising() {
		BluetoothLeAdvertiser advertiser = mBluetoothAdapter.getBluetoothLeAdvertiser();
		advertiser.stopAdvertisingSet(mAdvertisingSetCallback);
		printLog("stop advertising");
		}

		void updateBondedDevices() {
		List<String> addresses = new ArrayList<>();
		Set<BluetoothDevice> bonded_devices = mBluetoothAdapter.getBondedDevices();
		for (BluetoothDevice device : bonded_devices) {
		addresses.add(device.getAddress());
		}
		mBondedBtDeviceAddresses.setValue(addresses);
		}

		void setCsTargetAddress(String btAddress) {
		printLog("set target address: " + btAddress);
		mTargetBtAddress = btAddress;
		}

		void toggleGattConnection() {
		if (mGattState.getValue() == GattState.DISCONNECTED) {
		if (TextUtils.isEmpty(mTargetBtAddress)) {
		printLog("Pair and select a target device first!");
		return;
		}
		connectGatt();
		} else if (mGattState.getValue() == GattState.CONNECTED_DIRECT) {
		disconnectGatt();
		}
		}

		private BluetoothGattCallback mGattCallback =
		new BluetoothGattCallback() {
		@Override
		public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
		printLog("onConnectionStateChange status:" + status + ", newState:" + newState);
		if (newState == BluetoothProfile.STATE_CONNECTED) {
		printLog(gatt.getDevice().getName() + " is connected");
		gatt.requestMtu(GATT_MTU_SIZE);
		mBluetoothGatt = gatt;
		mGattState.postValue(mExpectedGattState);
		mTargetDevice.postValue(gatt.getDevice());
		} else if (newState == BluetoothProfile.STATE_DISCONNECTED) {
		printLog("disconnected from " + gatt.getDevice().getName());
		mExpectedGattState = GattState.DISCONNECTED;
		mGattState.postValue(mExpectedGattState);
		mBluetoothGatt.close();
		mBluetoothGatt = null;
		mTargetDevice.postValue(null);
		}
		}

		public void onMtuChanged(BluetoothGatt gatt, int mtu, int status) {
		if (status == BluetoothGatt.GATT_SUCCESS) {
		printLog("MTU changed to: " + mtu);
		} else {
		printLog("MTU change failed: " + status);
		}
		}
		};

		private void connectGatt() {
		BluetoothDevice btDevice = mBluetoothAdapter.getRemoteDevice(mTargetBtAddress);
		printLog("Connect gatt to " + btDevice.getName());
		mExpectedGattState = GattState.CONNECTED_DIRECT;
		btDevice.connectGatt(
		getApplication().getApplicationContext(),
		false,
		mGattCallback,
		BluetoothDevice.TRANSPORT_LE);
		}

		private void disconnectGatt() {
		if (mBluetoothGatt != null) {
		printLog("disconnect from " + mBluetoothGatt.getDevice().getName());
		mBluetoothGatt.disconnect();
		}
		}

		void toggleScanConnect() {
		if (mGattState.getValue() == GattState.DISCONNECTED) {
		connectGattByScanning();
		} else if (mGattState.getValue() == GattState.SCANNING) {
		stopScanning();
		} else if (mGattState.getValue() == GattState.CONNECTED_SCAN) {
		disconnectGatt();
		}
		}

		private ScanCallback mScanCallback =
		new ScanCallback() {
		@Override
		public void onScanResult(int callbackType, ScanResult result) {
		List<ParcelUuid> serviceUuids = result.getScanRecord().getServiceUuids();
		if (serviceUuids != null) {
		for (ParcelUuid parcelUuid : serviceUuids) {
		BluetoothDevice btDevice = result.getDevice();
		printLog("found device - " + btDevice.getName());
		if (parcelUuid.getUuid().equals(Constants.CS_TEST_SERVICE_UUID)) {
		mExpectedGattState = GattState.CONNECTED_SCAN;
		stopScanning();
		printLog("connect GATT to: " + btDevice.getName());
		// Connect to the GATT server
		mBluetoothGatt =
		btDevice.connectGatt(
		getApplication().getApplicationContext(),
		false,
		mGattCallback,
		BluetoothDevice.TRANSPORT_LE);
		}
		}
		}
		}
		};

		private void connectGattByScanning() {
		BluetoothLeScanner bluetoothLeScanner = mBluetoothAdapter.getBluetoothLeScanner();

		List<ScanFilter> filters = new ArrayList<>();
		ScanFilter filter =
		new ScanFilter.Builder()
		.setServiceUuid(
		new ParcelUuid(
		Constants.CS_TEST_SERVICE_UUID)) // Filter by service UUID
		.build();
		filters.add(filter);

		ScanSettings settings =
		new ScanSettings.Builder()
		.setLegacy(false)
		.setCallbackType(ScanSettings.CALLBACK_TYPE_ALL_MATCHES)
		.setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY)
		.setReportDelay(0)
		.build();

		printLog("start scanning...");

		// Start scanning
		bluetoothLeScanner.startScan(filters, settings, mScanCallback);
		mExpectedGattState = GattState.SCANNING;
		mGattState.setValue(mExpectedGattState);
		}

		private void stopScanning() {
		BluetoothLeScanner bluetoothLeScanner = mBluetoothAdapter.getBluetoothLeScanner();
		if (bluetoothLeScanner != null) {
		bluetoothLeScanner.stopScan(mScanCallback);
		if (mExpectedGattState == GattState.SCANNING) {
		mExpectedGattState = GattState.DISCONNECTED;
		mGattState.setValue(mExpectedGattState);
		}
		}
		}

		private void printLog(@NonNull String logMsg) {
		mLogText.postValue("BT Log: " + logMsg);
		}
		}

android/ChannelSoundingTestApp/app/src/main/java/com/android/bluetooth/channelsoundingtestapp/Constants.java

0 → 100644

+31 −0

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		/*
		* Copyright 2024 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.
		*/

		package com.android.bluetooth.channelsoundingtestapp;

		import java.util.UUID;

		abstract class Constants {
		static final UUID CS_TEST_SERVICE_UUID =
		UUID.fromString("f81d4fae-7ccc-eeee-a765-00aaaaaaaaaa");

		enum GattState {
		DISCONNECTED,
		SCANNING,
		CONNECTED_DIRECT,
		CONNECTED_SCAN,
		}
		}