/**
* Sets the duration in milliseconds spent not scanning between each Bluetooth LE scan cycle when
* no ranging/monitoring clients are in the background. default 5 minutes
*
* @param p (ms)
*/
public void setBackgroundBetweenScanPeriod(long p) {
mBeaconManager.setBackgroundBetweenScanPeriod(p);
try {
mBeaconManager.updateScanPeriods(); // 保证在下一个循环扫描周期生效
} catch (RemoteException e) {
LogManager.d(TAG, "RemoteException:" + e.toString());
}
}
@Override
public void onActivityStopped(Activity activity) {
if (activity instanceof ScannerActivity) {
isScannerActivityResumed = false;
scannerActivityDestroyedTimestamp = SystemClock.elapsedRealtime();
long delayBetweenScans = getDelayBetweenScans();
Timber.d("setBackgroundBetweenScanPeriod to %d ", delayBetweenScans);
beaconManager.setBackgroundBetweenScanPeriod(delayBetweenScans);
beaconManager.setBackgroundMode(true);
Timber.d("setBackgroundMode");
}
}
@Override
public void onActivityResumed(Activity activity) {
++this.activeActivityCount;
if (activity instanceof ScannerActivity) {
beaconManager.setBackgroundMode(false);
isScannerActivityResumed = true;
// the scanner activity runs in foreground mode, fast scanning
Timber.d("setForegroundMode");
} else {
// the app is still active but scan is backgrounded indefinitely
beaconManager.setBackgroundBetweenScanPeriod(DELAY_FOREVER);
isScannerActivityResumed = false;
Timber.d("setBackgroundBetweenScanPeriod to %d ", DELAY_FOREVER);
beaconManager.setBackgroundMode(true);
Timber.d("setBackgroundMode");
}
}