private void scanLeDevice(final Boolean enable) {
if (getBluetoothAdapter() == null) {
Log.e(TAG, "no bluetooth adapter. I cannot scan.");
if (simulatedScanData == null) {
Log.w(TAG, "exiting");
return;
} else {
Log.w(TAG, "proceeding with simulated scan data");
}
}
if (enable) {
long millisecondsUntilStart = nextScanStartTime - (new Date().getTime());
if (millisecondsUntilStart > 0) {
Log.d(
TAG,
"Waiting to start next bluetooth scan for another "
+ millisecondsUntilStart
+ " milliseconds");
// Don't actually wait until the next scan time -- only wait up to 1 second. this
// allows us to start scanning sooner if a consumer enters the foreground and expects
// results more quickly
handler.postDelayed(
new Runnable() {
@Override
public void run() {
scanLeDevice(true);
}
},
millisecondsUntilStart > 1000 ? 1000 : millisecondsUntilStart);
return;
}
trackedBeacons = new HashSet<IBeacon>();
if (scanning == false || scanningPaused == true) {
scanning = true;
scanningPaused = false;
try {
if (getBluetoothAdapter() != null) {
if (getBluetoothAdapter().isEnabled()) {
getBluetoothAdapter().startLeScan(leScanCallback);
lastScanStartTime = new Date().getTime();
} else {
Log.w(TAG, "Bluetooth is disabled. Cannot scan for iBeacons.");
}
}
} catch (Exception e) {
Log.e(
"TAG",
"Exception starting bluetooth scan. Perhaps bluetooth is disabled or unavailable?");
}
} else {
Log.d(TAG, "We are already scanning");
}
scanStopTime = (new Date().getTime() + scanPeriod);
scheduleScanStop();
Log.d(TAG, "Scan started");
} else {
Log.d(TAG, "disabling scan");
scanning = false;
if (getBluetoothAdapter() != null) {
getBluetoothAdapter().stopLeScan(leScanCallback);
lastScanEndTime = new Date().getTime();
}
}
}
@TargetApi(18)
private void scanLeDevice(final Boolean enable) {
scanCyclerStarted = true;
if (android.os.Build.VERSION.SDK_INT < 18) {
Log.w(TAG, "Not supported prior to API 18.");
return;
}
if (getBluetoothAdapter() == null) {
Log.e(TAG, "No bluetooth adapter. iBeaconService cannot scan.");
if (simulatedScanData == null) {
Log.w(TAG, "exiting");
return;
} else {
Log.w(TAG, "proceeding with simulated scan data");
}
}
if (enable) {
long millisecondsUntilStart = nextScanStartTime - (new Date().getTime());
if (millisecondsUntilStart > 0) {
if (IBeaconManager.LOG_DEBUG)
Log.d(
TAG,
"Waiting to start next bluetooth scan for another "
+ millisecondsUntilStart
+ " milliseconds");
// Don't actually wait until the next scan time -- only wait up to 1 second. this
// allows us to start scanning sooner if a consumer enters the foreground and expects
// results more quickly
handler.postDelayed(
new Runnable() {
@Override
public void run() {
scanLeDevice(true);
}
},
millisecondsUntilStart > 1000 ? 1000 : millisecondsUntilStart);
return;
}
trackedBeacons = new HashSet<IBeacon>();
trackedBeaconsPacketCount = 0;
if (scanning == false || scanningPaused == true) {
scanning = true;
scanningPaused = false;
try {
if (getBluetoothAdapter() != null) {
if (getBluetoothAdapter().isEnabled()) {
if (bluetoothCrashResolver.isRecoveryInProgress()) {
Log.w(TAG, "Skipping scan because crash recovery is in progress.");
} else {
if (scanningEnabled) {
getBluetoothAdapter()
.startLeScan((BluetoothAdapter.LeScanCallback) getLeScanCallback());
} else {
if (IBeaconManager.LOG_DEBUG)
Log.d(TAG, "Scanning unnecessary - no monitoring or ranging active.");
}
}
lastScanStartTime = new Date().getTime();
} else {
Log.w(TAG, "Bluetooth is disabled. Cannot scan for iBeacons.");
}
}
} catch (Exception e) {
Log.e(
"TAG",
"Exception starting bluetooth scan. Perhaps bluetooth is disabled or unavailable?");
}
} else {
if (IBeaconManager.LOG_DEBUG) Log.d(TAG, "We are already scanning");
}
scanStopTime = (new Date().getTime() + scanPeriod);
scheduleScanStop();
if (IBeaconManager.LOG_DEBUG) Log.d(TAG, "Scan started");
} else {
if (IBeaconManager.LOG_DEBUG) Log.d(TAG, "disabling scan");
scanning = false;
if (getBluetoothAdapter() != null) {
getBluetoothAdapter().stopLeScan((BluetoothAdapter.LeScanCallback) getLeScanCallback());
lastScanEndTime = new Date().getTime();
}
}
}