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StopScan before each new Companion device scan

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Fixes: 37356792
Test: Call associate many times rapidly with alternaring request value
Ensure no stale result is displayed
Change-Id: Icaa230d9ad468119e20b3de89f19c36531c2c60f
This commit is contained in:
Eugene Susla
2017-04-17 19:13:31 -07:00
parent 5b06dbd12b
commit a7717e3072
3 changed files with 120 additions and 74 deletions
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169
packages/CompanionDeviceManager/src/com/android/companiondevicemanager/DeviceDiscoveryService.java
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@@ -75,17 +75,21 @@ public class DeviceDiscoveryService extends Service {
private BluetoothAdapter mBluetoothAdapter;
private WifiManager mWifiManager;
private BluetoothLeScanner mBLEScanner;
private ScanSettings mDefaultScanSettings = new ScanSettings.Builder().build();
private List<DeviceFilter<?>> mFilters;
private List<BluetoothLEDeviceFilter> mBLEFilters;
private List<BluetoothDeviceFilter> mBluetoothFilters;
private List<WifiDeviceFilter> mWifiFilters;
private List<ScanFilter> mBLEScanFilters;
AssociationRequest mRequest;
List<DeviceFilterPair> mDevicesFound;
DeviceFilterPair mSelectedDevice;
DevicesAdapter mDevicesAdapter;
IFindDeviceCallback mFindCallback;
ICompanionDeviceDiscoveryServiceCallback mServiceCallback;
private final ICompanionDeviceDiscoveryService mBinder =
@@ -107,65 +111,9 @@ public class DeviceDiscoveryService extends Service {
}
};
private final ScanCallback mBLEScanCallback = new ScanCallback() {
@Override
public void onScanResult(int callbackType, ScanResult result) {
if (DEBUG) {
Log.i(LOG_TAG,
"BLE.onScanResult(callbackType = " + callbackType + ", result = " + result
+ ")");
}
final DeviceFilterPair<ScanResult> deviceFilterPair
= DeviceFilterPair.findMatch(result, mBLEFilters);
if (deviceFilterPair == null) return;
if (callbackType == ScanSettings.CALLBACK_TYPE_MATCH_LOST) {
onDeviceLost(deviceFilterPair);
} else {
onDeviceFound(deviceFilterPair);
}
}
};
private BluetoothLeScanner mBLEScanner;
private BroadcastReceiver mBluetoothDeviceFoundBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (DEBUG) {
Log.i(LOG_TAG,
"BL.onReceive(context = " + context + ", intent = " + intent + ")");
}
final BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
final DeviceFilterPair<BluetoothDevice> deviceFilterPair
= DeviceFilterPair.findMatch(device, mBluetoothFilters);
if (deviceFilterPair == null) return;
if (intent.getAction().equals(BluetoothDevice.ACTION_FOUND)) {
onDeviceFound(deviceFilterPair);
} else {
onDeviceLost(deviceFilterPair);
}
}
};
private BroadcastReceiver mWifiDeviceFoundBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)) {
List<android.net.wifi.ScanResult> scanResults = mWifiManager.getScanResults();
if (DEBUG) {
Log.i(LOG_TAG, "Wifi scan results: " + TextUtils.join("\n", scanResults));
}
for (int i = 0; i < scanResults.size(); i++) {
DeviceFilterPair<android.net.wifi.ScanResult> deviceFilterPair =
DeviceFilterPair.findMatch(scanResults.get(i), mWifiFilters);
if (deviceFilterPair != null) onDeviceFound(deviceFilterPair);
}
}
}
};
private ScanCallback mBLEScanCallback;
private BluetoothBroadcastReceiver mBluetoothBroadcastReceiver;
private WifiBroadcastReceiver mWifiBroadcastReceiver;
@Override
public IBinder onBind(Intent intent) {
@@ -211,16 +159,19 @@ public class DeviceDiscoveryService extends Service {
intentFilter.addAction(BluetoothDevice.ACTION_FOUND);
intentFilter.addAction(BluetoothDevice.ACTION_DISAPPEARED);
registerReceiver(mBluetoothDeviceFoundBroadcastReceiver, intentFilter);
mBluetoothBroadcastReceiver = new BluetoothBroadcastReceiver();
registerReceiver(mBluetoothBroadcastReceiver, intentFilter);
mBluetoothAdapter.startDiscovery();
}
if (shouldScan(mBLEFilters)) {
mBLEScanCallback = new BLEScanCallback();
mBLEScanner.startScan(mBLEScanFilters, mDefaultScanSettings, mBLEScanCallback);
}
if (shouldScan(mWifiFilters)) {
registerReceiver(mWifiDeviceFoundBroadcastReceiver,
mWifiBroadcastReceiver = new WifiBroadcastReceiver();
registerReceiver(mWifiBroadcastReceiver,
new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
mWifiManager.startScan();
}
@@ -232,6 +183,7 @@ public class DeviceDiscoveryService extends Service {
private void reset() {
if (DEBUG) Log.i(LOG_TAG, "reset()");
stopScan();
mDevicesFound.clear();
mSelectedDevice = null;
mDevicesAdapter.notifyDataSetChanged();
@@ -244,20 +196,18 @@ public class DeviceDiscoveryService extends Service {
}
private void stopScan() {
if (DEBUG) Log.i(LOG_TAG, "stopScan() called");
if (DEBUG) Log.i(LOG_TAG, "stopScan()");
if (shouldScan(mBluetoothFilters)) {
mBluetoothAdapter.cancelDiscovery();
unregisterReceiver(mBluetoothDeviceFoundBroadcastReceiver);
mBluetoothAdapter.cancelDiscovery();
if (mBluetoothBroadcastReceiver != null) {
unregisterReceiver(mBluetoothBroadcastReceiver);
mBluetoothBroadcastReceiver = null;
}
if (shouldScan(mBLEFilters)) {
mBLEScanner.stopScan(mBLEScanCallback);
mBLEScanner.stopScan(mBLEScanCallback);
if (mWifiBroadcastReceiver != null) {
unregisterReceiver(mWifiBroadcastReceiver);
mWifiBroadcastReceiver = null;
}
if (shouldScan(mWifiFilters)) {
unregisterReceiver(mWifiDeviceFoundBroadcastReceiver);
}
stopSelf();
}
private void onDeviceFound(@Nullable DeviceFilterPair device) {
@@ -265,8 +215,7 @@ public class DeviceDiscoveryService extends Service {
return;
}
if (DEBUG) Log.i(LOG_TAG, "Found device " + device.getDisplayName() + " "
+ getDeviceMacAddress(device.device));
if (DEBUG) Log.i(LOG_TAG, "Found device " + device);
if (mDevicesFound.isEmpty()) {
onReadyToShowUI();
@@ -306,6 +255,7 @@ public class DeviceDiscoveryService extends Service {
}
void onCancel() {
if (DEBUG) Log.i(LOG_TAG, "onCancel()");
try {
mServiceCallback.onDeviceSelectionCancel();
} catch (RemoteException e) {
@@ -427,5 +377,76 @@ public class DeviceDiscoveryService extends Service {
public int hashCode() {
return Objects.hash(getDeviceMacAddress(device));
}
@Override
public String toString() {
return "DeviceFilterPair{" +
"device=" + device +
", filter=" + filter +
'}';
}
}
private class BLEScanCallback extends ScanCallback {
public BLEScanCallback() {
if (DEBUG) Log.i(LOG_TAG, "new BLEScanCallback() -> " + this);
}
@Override
public void onScanResult(int callbackType, ScanResult result) {
if (DEBUG) {
Log.i(LOG_TAG,
"BLE.onScanResult(callbackType = " + callbackType + ", result = " + result
+ ")");
}
final DeviceFilterPair<ScanResult> deviceFilterPair
= DeviceFilterPair.findMatch(result, mBLEFilters);
if (deviceFilterPair == null) return;
if (callbackType == ScanSettings.CALLBACK_TYPE_MATCH_LOST) {
onDeviceLost(deviceFilterPair);
} else {
onDeviceFound(deviceFilterPair);
}
}
}
private class BluetoothBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (DEBUG) {
Log.i(LOG_TAG,
"BL.onReceive(context = " + context + ", intent = " + intent + ")");
}
final BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
final DeviceFilterPair<BluetoothDevice> deviceFilterPair
= DeviceFilterPair.findMatch(device, mBluetoothFilters);
if (deviceFilterPair == null) return;
if (intent.getAction().equals(BluetoothDevice.ACTION_FOUND)) {
onDeviceFound(deviceFilterPair);
} else {
onDeviceLost(deviceFilterPair);
}
}
}
private class WifiBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)) {
List<android.net.wifi.ScanResult> scanResults = mWifiManager.getScanResults();
if (DEBUG) {
Log.i(LOG_TAG, "Wifi scan results: " + TextUtils.join("\n", scanResults));
}
for (int i = 0; i < scanResults.size(); i++) {
DeviceFilterPair<android.net.wifi.ScanResult> deviceFilterPair =
DeviceFilterPair.findMatch(scanResults.get(i), mWifiFilters);
if (deviceFilterPair != null) onDeviceFound(deviceFilterPair);
}
}
}
}
}