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When discovery gadget use Lollipop+ device, use new BTLE API instead of old general BT discovery. 

(cherry picked from commit 53e3fde7c06cbcb7665726eeb80544730196f928)
This commit is contained in:
JohnnySun 2016-09-23 11:55:34 +08:00 committed by cpfeiffer
parent fd03dac5cd
commit 3259efbd10
1 changed files with 82 additions and 1 deletions
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81
app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/DiscoveryActivity.java
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@ -1,15 +1,20 @@
package nodomain.freeyourgadget.gadgetbridge.activities;
import android.Manifest;
import android.annotation.TargetApi;
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothManager;
import android.bluetooth.le.ScanCallback;
import android.bluetooth.le.ScanResult;
import android.bluetooth.le.ScanSettings;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
@ -36,10 +41,15 @@ import nodomain.freeyourgadget.gadgetbridge.impl.GBDeviceCandidate;
import nodomain.freeyourgadget.gadgetbridge.util.DeviceHelper;
import nodomain.freeyourgadget.gadgetbridge.util.GB;
import static android.bluetooth.le.ScanSettings.MATCH_MODE_STICKY;
import static android.bluetooth.le.ScanSettings.SCAN_MODE_LOW_LATENCY;
public class DiscoveryActivity extends GBActivity implements AdapterView.OnItemClickListener {
private static final Logger LOG = LoggerFactory.getLogger(DiscoveryActivity.class);
private static final long SCAN_DURATION = 60000; // 60s
private ScanCallback newLeScanCallback = null;
private final Handler handler = new Handler();
private final BroadcastReceiver bluetoothReceiver = new BroadcastReceiver() {
@ -92,6 +102,32 @@ public class DiscoveryActivity extends GBActivity implements AdapterView.OnItemC
}
};
// why use a method to to get callback?
// because this callback need API >= 21
// we cant add @TARGETAPI("Lollipop") at class header
// so use a method woth SDK check to return this callback
private ScanCallback getScanCallback() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
newLeScanCallback = new ScanCallback() {
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
@Override
public void onScanResult(int callbackType, ScanResult result) {
super.onScanResult(callbackType, result);
try {
LOG.warn(result.getDevice().getName() + ": " +
((result.getScanRecord() != null) ? result.getScanRecord().getBytes().length : -1));
//logMessageContent(result.getScanRecord().getBytes());
handleDeviceFound(result.getDevice(), (short) result.getRssi());
} catch (NullPointerException e) {
e.printStackTrace();
}
}
};
}
return newLeScanCallback;
}
public void logMessageContent(byte[] value) {
if (value != null) {
for (byte b : value) {
@ -118,6 +154,7 @@ public class DiscoveryActivity extends GBActivity implements AdapterView.OnItemC
private enum Scanning {
SCANNING_BT,
SCANNING_BTLE,
SCANNING_NEW_BTLE,
SCANNING_OFF
}
@ -224,8 +261,12 @@ public class DiscoveryActivity extends GBActivity implements AdapterView.OnItemC
LOG.warn("Not starting discovery, because already scanning.");
return;
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
startDiscovery(Scanning.SCANNING_NEW_BTLE);
} else {
startDiscovery(Scanning.SCANNING_BT);
}
}
private void startDiscovery(Scanning what) {
LOG.info("Starting discovery: " + what);
@ -239,6 +280,12 @@ public class DiscoveryActivity extends GBActivity implements AdapterView.OnItemC
} else {
discoveryFinished();
}
} else if (what == Scanning.SCANNING_NEW_BTLE) {
if (GB.supportsBluetoothLE()) {
startNEWBTLEDiscovery();
} else {
discoveryFinished();
}
}
} else {
discoveryFinished();
@ -262,6 +309,8 @@ public class DiscoveryActivity extends GBActivity implements AdapterView.OnItemC
stopBTDiscovery();
} else if (wasScanning == Scanning.SCANNING_BTLE) {
stopBTLEDiscovery();
} else if (wasScanning == Scanning.SCANNING_NEW_BTLE) {
stopNewBTLEDiscovery();
}
handler.removeMessages(0, stopRunnable);
}
@ -275,6 +324,11 @@ public class DiscoveryActivity extends GBActivity implements AdapterView.OnItemC
adapter.cancelDiscovery();
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void stopNewBTLEDiscovery() {
adapter.getBluetoothLeScanner().stopScan(newLeScanCallback);
}
private void bluetoothStateChanged(int oldState, int newState) {
discoveryFinished();
if (newState == BluetoothAdapter.STATE_ON) {
@ -334,6 +388,33 @@ public class DiscoveryActivity extends GBActivity implements AdapterView.OnItemC
return true;
}
// New BTLE Discovery use startScan (List<ScanFilter> filters,
// ScanSettings settings,
// ScanCallback callback)
// Its added on API21
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void startNEWBTLEDiscovery() {
// Only use new APi when user use Lollipop+ device
LOG.info("Start New BTLE Discovery");
handler.removeMessages(0, stopRunnable);
handler.sendMessageDelayed(getPostMessage(stopRunnable), SCAN_DURATION);
adapter.getBluetoothLeScanner().startScan(null, getScanSettings(), getScanCallback());
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private ScanSettings getScanSettings() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
return new ScanSettings.Builder()
.setScanMode(SCAN_MODE_LOW_LATENCY)
.setMatchMode(MATCH_MODE_STICKY)
.build();
} else {
return new ScanSettings.Builder()
.setScanMode(SCAN_MODE_LOW_LATENCY)
.build();
}
}
private void startBTLEDiscovery() {
LOG.info("Starting BTLE Discovery");
handler.removeMessages(0, stopRunnable);